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  #1  
Old 08-12-2005, 05:12 PM
Faded's Avatar
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Default CR250 Model Year Changes: 1998-2005

1998

NEW FOR 1998:
  • Fork travel increase of 9mm and friction-reducing compression and damping refinements.
  • Rear shock stroke-increase of 5.8mm results in an increase of rear axle stroke by 10.2mm. New rear spring rate and rear linkage ratio.
  • Revised frame geometry includes steeper caster, shorter trail, and shorter wheelbase.
  • Frame has relocated shock mount, new chain-roller location, and improved welding methods at headpipe, shock mount, and engine bracket areas.
  • Subframe uses thinner-walled design and a new mounting location to reduce weight and maintain strength.
  • New swingarm features a 1.5mm-thicker cross-body for improved rigidity and balance.
  • Redesigned countershaft provides a more precise fit with drive sprocket.
  • Stainless steel clutch cable for longer life.
  • Seat foam density improved.

ENGINE:
  • Liquid-cooled 2-stroke single cylinder engine with 66.4mm x 72.0mm bore & stroke and 8.7:1 compression ratio.
  • Map-type digital electronic ignition system monitors engine speed to provide optimal timing for faster, stronger response during hard acceleration.
  • Power Jet Control (PJC) carburetor features solenoid-controlled auxiliary main jet that opens at low rpm for stronger, more linear response and improved traction out of corners.
  • Steel water-pump gear.
  • Large-volume single radiator.

CHASSIS / SUSPENSION:
  • Aluminum twin-spar frame features dual box-section spars and downtubes, and compact forged pivot-plates for light weight and rigidity. Main frame and swingarm have variable wall-thickness for ideal combination of light weight and strength.
  • Light, tapered aluminum box-section swingarm.
  • Rear axle features integrated collars.
  • Rear disc brake features low-positioned caliper and thin, large-diameter, 240mm rotor.
  • Lightweight 47mm inverted Showa cartridge fork features 12.4 inches of travel, and 18-position rebound damping adjustability in addition to 20 clicks of compression damping adjustability.
  • Inner surface of front fork outer-tubes and rear damper case are molybdenum-coated for low friction.
  • Pro-Link® single-shock rear suspension system features a fully adjustable Showa 46mm rear damper and 12.9 inches of wheel travel. Separate low-speed and high-speed compression damping adjusters.

ADDITIONAL FEATURES:
  • Wide, cleated, self-cleaning, folding, cast stainless steel footpegs.
  • Lightweight, ultra-strong chain guide.
  • Cleated rear brake lever and folding shift lever tip.
  • Strong, rigid front wheel features large-diameter front axle and wide wheel-bearing span.
  • Super-light rims, straight-pull spokes and lightweight hubs offer exceptional durability and minimize unsprung weight for optimum suspension action.

SPECIFICATIONS:
Model: CR250R
Engine Type: 249cc liquid-cooled single-cylinder two-stroke with power-port system
Bore and Stroke: 66.4mm x 72mm
Compression Ratio: 8.7:1
Induction: Four-petal reed valve
Carburetion: 38.3mm flat-slide
Ignition: Solid-state map-type digital ignition with electronic advance
Transmission: Close-ratio five-speed
Final Drive: #520 chain; 13T/50T
Suspension Front: 47mm inverted Showa cartridge fork with 18-position rebound and 20-position compression damping adjustability; 12.4 inches travel
Suspension Rear: Pro-Link Showa single shock with spring preload, 20-position rebound damping adjustability, and compression damping adjustment separated into low-speed (8 positions) and high-speed (2 turns); 12.9 inches travel
Brakes Front: Single 240mm disc with twin-piston caliper
Brakes Rear: Single 240mm disc
Tires Front: 80/100-21
Tires Rear: 110/90-19
Wheelbase: 58.2 inches
Seat Height: 36.7 inches
Ground Clearance: 12.8 inches
Dry Weight: 213.8 pounds
Fuel Capacity: 2.0 gallons
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Last edited by Faded; 08-13-2005 at 11:37 AM. Reason: Include '06 model year.
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  #2  
Old 08-12-2005, 05:17 PM
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Default Re: CR250 Model Year Changes: 1998-2005

Faded, You da bomb, where'd you get all that?
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  #3  
Old 08-12-2005, 05:19 PM
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Default Re: CR250 Model Year Changes: 1998-2005

1999

NEW FOR 1999:
  • All-new six-petal reed valve improves throttle response and power delivery.
  • Significant cylinder port redesign adds low-end and mid-range power. All ports are lowered 0.2mm, with extensive reshaping of exhaust sub-ports and intake ports.
  • New exhaust pipe dimensions and porting changes maintain optimum power delivery.
  • New 38mm flat-slide Keihen carburetor (no power jet control circuit) incorporates a unique dual-taper needle for precise fuel/air metering and a simpler, straighter slow jet circuit for better throttle response.
  • Piston durability is improved by increasing thickness of the upper ring land.
  • Redesigned cylinder head combustion area.
  • New ignition CPU utilizes a 16-bit processor for faster data calculation and more accurate ignition timing for the solid-state 3-D map-type digital ignition.
  • Front fork refinements include new damping force rates; a stiffer (.42) spring rate; redesigned, low-friction oil seal lip; and a more rigid stanchion tube with an internal shape change to reduce side-load friction. Additional changes to the top spring rate (now 1.9) and air pressure ratio, together with a new two-piece piston bushing.
  • New, 1mm-shorter shock features new damping force rates for a lower seat height, relaxed caster angle and 4mm more trail.
  • Revised rear linkage ratio with new shock settings.
  • Redesigned, lighter chain guide and lower chain roller.
  • Reshaped, rubber-mounted handlebar.
  • Seat foam density reduced.

ENGINE:
  • 3-D map-type digital electronic ignition system monitors engine speed to provide optimal timing.

CHASSIS / SUSPENSION:
  • Lightweight 47mm inverted Showa cartridge fork features 12.4 inches of travel, and 16-position rebound damping adjustability in addition to 16 positions of compression damping adjustability.
  • Pro-Link® single-shock rear suspension system features a fully adjustable 46mm Showa rear damper and 12.7 inches of wheel travel. Separate low-speed and high-speed compression damping adjusters.

SPECIFICATIONS:
Model: CR250R
Engine Type: 249cc liquid-cooled single-cylinder two-stroke with power-port system
Bore and Stroke: 66.4mm x 72mm
Compression Ratio: 8.7:1
Induction: Six-petal reed valve
Carburetion: 38mm flat-slide
Ignition: Solid-state 3-D map-type digital ignition with electronic advance
Transmission: Close-ratio five-speed
Final Drive: #520 chain; 13T/50T
Suspension Front: 47mm inverted Showa cartridge fork with 16-position rebound and 16-position compression damping adjustability; 12.4 inches travel
Suspension Rear: Pro-Link Showa single shock with spring preload, 17-position rebound damping adjustability, and compression damping adjustment separated into low-speed (13 positions) and high-speed (3.5 turns); 12.7 inches travel
Brakes Front: Single 240mm disc with twin-piston caliper
Brakes Rear: Single 240mm disc
Tires Front: 80/100-21
Tires Rear: 110/90-19
Wheelbase: 58.3 inches
Rake (Caster Angle): 27.32°
Trail: 113.4mm (4.46 inches)
Seat Height: 37.2 inches
Ground Clearance: 13.2 inches
Dry Weight: 213.8 pounds
Fuel Capacity: 2.0 gallons
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  #4  
Old 08-12-2005, 05:24 PM
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Default Re: CR250 Model Year Changes: 1998-2005

2000

NEW FOR 2000:
  • All-new second-generation twin-spar aluminum frame and swingarm.
  • Redesigned engine ports, air intake tract and exhaust provide excellent high rpm output, improved low and mid-range power delivery, and more useable power throughout the rev band.
  • Slim new design with minimal bodywork. A redesigned seat creates a 10-15mm narrower profile in the seat and tank area.

ENGINE:
  • Larger airbox with 35-percent more volume is located 15mm farther forward.
  • 38mm flat-slide Keihen (PWK Air Striker) carburetor incorporates a triple-taper needle.
  • Carburetor insulator features an internal step that smoothes airflow drawn into the engine.
  • Reshaped CRV rotary/flap exhaust valve has longer extensions at the side of the flap to better follow the exhaust port shape for increased internal turbulence, improved exhaust scavenging, and responsive acceleration.
  • Sub-exhaust valve port is raised 1mm to improve exhaust transition flow to exhaust valves.
  • Modified expansion chamber.
  • 16-bit processor in the ignition CPU produces faster data calculation and more accurate ignition timing for the solid-state 3-D map-type digital ignition.
  • New dual radiators provide 10-percent more surface area and a 8-percent improvement in heat dispersion over the previous single radiator design.

CHASSIS / SUSPENSION:
  • Completely new second-generation frame features smaller, lighter twin-spar aluminum construction with semi-double engine cradle configuration.
  • Extruded aluminum main frame spars are narrowed from 90mm to 80mm while retaining 30mm spar thickness, reducing torsional rigidity 25-percent and increasing lateral rigidity 10-percent to provide an ideal balance of rigidity, strength, compliance and comfort.
  • New chassis design moves frame spars lower for a narrower feel.
  • New forged aluminum steering head replaces extruded piece.
  • Semi-double engine cradle features a single, large diameter 45mm x 50mm dual box section downtube. Two rugged box-section rails attach to the base of the downtube and support the engine.
  • Redesigned upper and lower triple clamps increase steering precision.
  • Lightweight, 47mm inverted Showa cartridge fork features 12.4 inches of travel, 16-position rebound damping adjustability and 16-position compression damping adjustability.
  • All-new swingarm features a dual-axis, double taper design with a larger, cast aluminum cross-member for 25-percent greater swingarm rigidity.
  • Pro-Link® single-shock rear suspension system features a fully adjustable Showa rear damper and 12.5 inches of wheel travel. Separate low-speed (13 positions) and high-speed (3.5 turns) compression damping adjusters.
  • Rear shock's damper piston diameter is increased from 46mm to 50mm.
  • Redesigned Pro-Link linkage is 3.5 ounces lighter, providing a lower rate in the swingarm's initial travel and a higher rate approaching full compression.
  • Linkage mount on frame cross-brace is raised 10mm to minimize ground contact.
  • Increased rear axle diameter from 20mm to 25mm and larger diameter bearings.
  • New, compact dual-piston front brake caliper with steel pistons reduces unsprung weight by 2.8 ounces.

ADDITIONAL FEATURES:
  • All new fenders, shrouds and sidecovers.
  • Reshaped seat with softer foam is positioned closer to the reshaped fuel tank.
  • Handlebar is rubber-mounted.
  • CR125/250 handlebar holders provide 3 different mounting positions: standard CR250R holder provides neutral position and optional CR125R holder provides ±3mm fore or aft position to match rider preference.
  • Adjustable front brake lever.

SPECIFICATIONS:
Model: CR250R
Engine Type: 249cc liquid-cooled single-cylinder two-stroke with power-port system
Bore and Stroke: 66.4mm x 72mm
Compression Ratio: 8.7:1
Induction: Six-petal reed valve
Carburetion: 38mm flat-slide
Ignition: Solid-state 3-D map-type digital ignition with electronic advance
Transmission: Close-ratio five-speed
Final Drive: #520 chain; 13T/50T
Suspension Front: 47mm inverted Showa cartridge fork with 16-position rebound and 16-position compression damping adjustability; 12.4 inches travel
Suspension Rear: Pro-Link Showa single shock with spring preload, 17-position rebound damping adjustability, and compression damping adjustment separated into low-speed (13 positions) and high-speed (3.5 turns); 12.5 inches travel
Brakes Front: Single 240mm disc with twin-piston caliper
Brakes Rear: Single 240mm disc
Tires Front: 80/100-21
Tires Rear: 110/90-19
Wheelbase: 58.5 inches
Rake (Caster Angle): 27.73°
Trail: 113.8mm (4.48 inches)
Seat Height: 37.7 inches
Ground Clearance: 13.1 inches
Dry Weight: 213.8 pounds
Fuel Capacity: 2.0 gallons
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Last edited by Faded; 08-12-2005 at 05:26 PM.
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  #5  
Old 08-12-2005, 05:27 PM
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Default Re: CR250 Model Year Changes: 1998-2005

2001

NEW FOR 2001:
  • New cylinder port shapes and timing specs.
  • All-new lighter 38mm flat-slide Mikuni TMX carburetor.
  • New reed-petal-stopper shape.
  • New exhaust pipe and muffler design.
  • New ignition timing curve.
  • New lightweight drive chain is 3 ounces lighter than the previous design.
  • New increased spring rates, with lighter damping forces in both fork and shock.
  • New piston in rear shock provides improved shock absorption and consistent damping.
  • New anodized aluminum brake pistons reduce unsprung weight by 48 grams in the front brake caliper.
  • New lightweight steering stem features aluminum top threads and stem nut to reduce weight 2 ounces.
  • New side panels feature 20-percent-wider air intake openings for improved response.
  • Optional 20-inch front wheel.

ENGINE:
  • Redesigned engine ports, air intake tract and exhaust.
  • Revised engine cases improving structural strength.
  • Modified expansion chamber.

SPECIFICATIONS:
Model: CR250R
Engine Type: 249cc liquid-cooled single-cylinder two-stroke with power-port system
Bore and Stroke: 66.4mm x 72mm
Compression Ratio: 8.7:1
Induction: Six-petal reed valve
Carburetion: 38mm Mikuni TMX flat-slide
Ignition: Solid-state three-dimensional map-type digital ignition with electronic advance
Transmission: Close-ratio five-speed
Final Drive: #520 chain; 13T/50T
Suspension Front:
47mm inverted Showa cartridge fork with 16-position rebound and 16-position compression damping adjustability; 12.4 inches travel
Suspension Rear: Pro-Link Showa single shock with spring preload, 17-position rebound damping adjustability, and compression damping adjustment separated into low-speed (13 positions) and high-speed (3.5 turns); 12.5 inches travel
Brakes Front: Single 240mm disc with twin-piston caliper
Brakes Rear: Single 240mm disc
Tires Front: 80/100-21
Tires Rear: 110/90-19
Wheelbase: 58.5 inches
Rake (Caster Angle): 27.73 degrees
Trail: 113.8mm (4.48 inches)
Seat Height: 36.7 inches
Ground Clearance: 13.0 inches
Dry Weight: 213.8 pounds
Fuel Capacity: 2.0 gallons
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  #6  
Old 08-12-2005, 05:36 PM
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Default Re: CR250 Model Year Changes: 1998-2005

2002

NEW FOR 2002:
  • All-new case-reed engine features a redesigned air intake tract and an electronically controlled RC-type exhaust valve.
  • All-new third-generation twin-spar aluminum frame, a narrower cross section and a 1.1-pound weight reduction.
  • Redesigned rear brake system reduces weight 11.8 ounces.
  • Aluminum spoke nipples on front and rear wheels and a new rear wheel and hub design contribute to unsprung weight reductions of 3.5 and 15.9 ounces, respectively.
  • Refined rider ergonomics.

ENGINE:
  • Liquid-cooled two-stroke single-cylinder engine with 66.4mm x 72mm bore and stroke and 8.5:1 compression ratio.
  • Air intake boot is reshaped and boot volume is increased 65cc to provide a 7 percent increase in airflow capacity, contributing to improved performance in the mid-and upper-rpm ranges.
  • Crankcase reed induction with two-stage carbon fiber four-petal reed valve.
  • RC-style exhaust valve features an NSR® road racing-inspired rotary flap design with electronic control. The electronic control module uses engine rpm to calculate exhaust valve position and signal a DC servo motor to adjust the RC valve.
  • New Exhaust header and expansion chamber.
  • A 16-bit CPU incorporates both the DC capacitive discharge ignition (CDI) and exhaust valve servo control.
  • Clutch damper design improves rear suspension feel and action while accelerating over bumps.
  • Lightweight magnesium clutch cover reduces weight 7.8 ounces.
  • Five-speed close-ratio transmission features a thicker fourth gear.

CHASSIS / SUSPENSION:
  • All-new third-generation twin-spar aluminum frame has taller swingarm pivot plates and thinner frame spars to create a narrower overall frame cross-section. Together with a new, lower subframe assembly, rider comfort and maneuverability are improved and frame weight is reduced 10.6 ounces.
  • Semi-double-cradle design features a single large-diameter, tapered downtube. Two rugged box-section rails attach to the base of the downtube and support the engine. A forged aluminum steering head provides a compact and extremely durable mount for the frame spars and engine downtube.
  • Swingarm features a dual-axis, double-taper design with a large cast aluminum cross-member. Swingarm casting walls are 0.5mm thinner to decrease weight by 7 ounces, yet overall rigidity is increased by 20 percent.
  • Front and rear wheels feature HRC© works-type lightweight aluminum spoke nipples. Front wheel unsprung weight is reduced by 3.5 ounces. Together with a new rear wheel, hub and spoke design, rear wheel unsprung weight is reduced 15.9 ounces.
  • Lightweight, 47mm inverted Showa® twin-chamber cartridge fork with aluminum dampers is 12.3 ounces lighter than the previous design and features 12.4 inches of travel, 16-position rebound damping adjustability and 16-position compression damping adjustability. Inner surfaces of front fork outer tubes and rear damper case are molybdenum-coated for smooth, low-friction operation.
  • Pro-Link® single-shock rear suspension features a fully adjustable Showa rear damper and 12.6 inches of wheel travel, separate low-speed (13 positions) and high-speed (3.5 turns) compression damping adjusters and 17-position rebound damping.
  • New HRC works-type rear brake system now integrates the rear master cylinder and fluid reservoir, eliminating the rear master cylinder reservoir and hose. Together with a smaller caliper and smaller-diameter rear brake piston, overall system weight is reduced by 11.8 ounces and serviceability is improved.
  • Rear disc swept area is increased 14 percent to provide optimum braking control.

ADDITIONAL FEATURES:
  • New frame allows sidecovers to have larger air intake ducts, contributing to a significant airflow increase in the mid- and upper-rpm ranges.
  • Rider ergonomics are optimized by raising the handlebar 2.5mm and moving it 3mm closer to the rider, raising the seat 5mm and raising the footpegs 10mm.
  • Seat cushion uses multi-density foam construction.
  • Brake lever and shift pedal are redesigned to fit the improved riding position. Brake pedal features a revised ratio to match new rear brake master cylinder design.
  • New chain guide material offers improved wear resistance and durability is increased 300 percent. Chain roller now features a tough, double-sealed bearing.

SPECIFICATIONS:
Model: CR250R
Engine Type: 249cc liquid-cooled single-cylinder two-stroke with electronically controlled RC valve
Bore and Stroke: 66.4mm x 72mm
Compression Ratio: 8.5:1
Induction: Four-petal crankcase reed-valve
Carburetion: 38mm Mikuni TMX flat-slide
Ignition: Solid-state DC CDI with three-dimensional mapping and electronic advance
Transmission: Close-ratio five-speed
Final Drive: #520 chain; 13T/48T
Suspension Front: 47mm inverted Showa cartridge fork with 16-position rebound and 16-position compression damping adjustability; 12.4 inches travel
Suspension Rear: Pro-Link Showa single shock with spring preload, 17-position rebound damping adjustability, and compression damping adjustment separated into low-speed (13 positions) and high-speed (3.5 turns); 12.6 inches wheel travel
Brakes Front: Single 240mm disc with twin-piston caliper
Brakes Rear: Single 240mm disc
Tires Front: 80/100-21
Tires Rear: 110/90-19
Wheelbase: 58.7 inches
Rake (Caster Angle): 26.73 degrees
Trail: 106.7mm (4.20 inches)
Seat Height: 37.08 inches
Ground Clearance: 13.6 inches
Dry Weight: 213.0 pounds
Fuel Capacity: 2.0 gallons
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Last edited by Faded; 08-12-2005 at 05:45 PM.
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  #7  
Old 08-12-2005, 05:39 PM
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Default Re: CR250 Model Year Changes: 1998-2005

2003

NEW FOR 2003:
  • New cylinder porting.
  • New eight-petal reed valve.
  • New air intake system offers straighter alignment to produce more direct airflow.
  • Redesigned number plate and inner duct.
  • New foam gasket between airbox and air boot for better sealing and airflow management.
  • New works-shaped expansion chamber.
  • New ignition timing settings help broaden the engine's powerband.

ENGINE:
  • Air intake boot is reshaped for more direct airflow, contributing to strong low-speed engine performance.
  • Five-speed close-ratio transmission features thicker second and third gears.

SPECIFICATIONS:
Model: CR250R
Engine Type: 249cc liquid-cooled single-cylinder two-stroke with electronically controlled RC valve
Bore and Stroke: 66.4mm x 72mm
Compression Ratio: 8.5:1
Induction: Eight-petal crankcase reed-valve
Carburetion: 38mm Mikuni TMX flat-slide
Ignition: CDI with three-dimensional mapping and electronic advance
Transmission: Close-ratio five-speed
Final Drive: #520 chain; 13T/48T
Suspension Front: 47mm inverted Showa cartridge fork with 16-position rebound and 16-position compression damping adjustability; 12.4 inches travel
Suspension Rear: Pro-Link Showa single shock with spring preload, 17-position rebound damping adjustability, and compression damping adjustment separated into low-speed (13 positions) and high-speed (3.5 turns); 12.6 inches travel
Brakes Front: Single 240mm disc with twin-piston caliper
Brakes Rear: Single 240mm disc
Tires Front: 80/100-21
Tires Rear: 110/90-19
Wheelbase: 58.7 inches
Rake (Caster Angle): 26.73°
Trail: 106.7mm (4.20 inches)
Seat Height: 37.08 inches
Ground Clearance: 13.6 inches
Dry Weight: 213 pounds
Fuel Capacity: 2.0 gallons
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Old 08-12-2005, 05:42 PM
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Default Re: CR250 Model Year Changes: 1998-2005

2004

NEW FOR 2004:
  • Aluminum Renthal 971 bend handlebar.
  • "Non-slip" seat cover for increased rider control.
  • Newly designed footpeg hinges prevent dirt accumulation for consistent footpeg angle.
  • Front fork tubes use same honing process as works bikes for less friction. First time on a mass production motocrosser.
  • Improved suspension damping characteristics.
  • Quick-adjust clutch perch.
  • Newly designed clutch lever.
  • New engine cases to improve mixture flow.
  • Redesigned free-flowing reed valves for increased bottom-end power.
  • TMX 38 carburetor gets new throttle position sensor (TPS).
  • Air cleaner connecting tube volume up 6.5 percent.
  • Shape and position of exhaust port changed.
  • Dunlop D742 front and D756 rear tires.
  • Newly designed front fender and front number plate.
  • New fork guards, engine guards and front hose clamps redesigned to reduce weight.
  • Air intake system offers straighter alignment to produce more direct airflow.

ENGINE:
  • Carburetor now has throttle-position sensor (TPS) to calibrate timing with exhaust valve for improved power delivery.
  • New cylinder porting.
  • New Exhaust header and expansion chamber.

SPECIFICATIONS:
Model: CR250R
Engine Type: 249cc liquid-cooled single-cylinder two-stroke with electronically controlled RC valve
Bore and Stroke: 66.4mm x 72mm
Compression Ratio: 8.5:1
Induction: Eight-petal crankcase reed-valve
Carburetion: 38mm Mikuni TMX flat-slide with throttle position sensor (TPS)
Ignition: CDI with three-dimensional mapping and electronic advance
Transmission: Close-ratio five-speed
Final Drive: #520 chain; 13T/48T
Suspension Front: 47mm inverted Showa cartridge fork with 16-position rebound and 16-position compression damping adjustability; 12.4 inches travel
Suspension Rear: Pro-Link Showa single shock with spring preload, 17-position rebound damping adjustability, and compression damping adjustment separated into low-speed (13 positions) and high-speed (3.5 turns); 12.6 inches travel
Brakes Front: Single 240mm disc with twin-piston caliper
Brakes Rear: Single 240mm disc
Tires Front: 80/100-21
Tires Rear: 110/90-19
Wheelbase: 58.3 inches
Rake (Caster Angle): 26.49°
Trail: 107.3mm (4.22 inches)
Seat Height: 37.1 inches
Ground Clearance: 13.3 inches
Dry Weight: 213 pounds
Fuel Capacity: 2.0 gallons
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  #9  
Old 08-12-2005, 05:43 PM
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Default Re: CR250 Model Year Changes: 1998-2005

You posted some awesome info there for anyone looking to buy one of these bikes. GOOD JOB!
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Old 08-12-2005, 05:46 PM
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Default Re: CR250 Model Year Changes: 1998-2005

2005

NEW FOR 2005:
  • New cylinder design features RC exhaust valve housed in removable case for improved sealing.
  • New precision-cut stainless steel cylinder base gasket and revised port timing .
  • New cylinder head combustion chamber shape.
  • New one-piece exhaust valve for improved sealing.
  • New piston dome shape.
  • New piston features single keystone piston ring for reduced friction and improved sealing.
  • New crankshaft design.
  • New crankcase with redesigned intake port for smoother air flow and increased journal thickness to decrease crank deflection.
  • New six-petal reed valve with narrower profile.
  • New reed valve mounting angle.
  • New carburetor settings.
  • New shift fork shaft, shift forks and shift drum.
  • New ECU mapping and RC valve control settings.
  • New exhaust pipe shape has increased volume.
  • Thicker radiator core (from 24mm to 28mm) improves cooling capacity.
  • New front axle placement for improved fork action and turning.
  • New swingarm features a dual-axis, double-taper design with a large cast aluminum cross member that is lighter weight and stronger.
  • New rear hub is stronger and lighter.
  • New rear shock valving for improved bump absorption.

ENGINE:
  • New exhaust header and expansion chamber.

CHASSIS / SUSPENSION:
  • Revised suspension settings.

SPECIFICATIONS:
Model: CR250R
Engine Type: 249cc liquid-cooled single-cylinder two-stroke with electronically controlled RC valve
Bore And Stroke: 66.4mm x 72mm
Compression Ratio: 8.5:1
Induction: Six-petal crankcase reed-valve
Carburetion: 38mm Mikuni TMX flat-slide with throttle position sensor (TPS)
Ignition: CD with three-dimensional mapping and electronic advance
Transmission: Close-ratio five-speed
Final Drive: #520 chain; 13T/48T
Suspension Front: 47mm inverted Showa cartridge fork with 16-position rebound and 16-position compression damping adjustability; 12.4 inches travel
Suspension Rear: Pro-Link Showa single shock with spring preload, 17-position rebound damping adjustability, and compression damping adjustment separated into low-speed (13 positions) and high-speed (3.5 turns); 12.6 inches travel
Brakes Front: Single 240mm disc with twin-piston caliper
Brakes Rear: Single 240mm disc
Tires Front: 80/100-21
Tires Rear: 110/90-19
Wheelbase: 58.3 inches
Rake (Caster Angle): 26.50 °
Trail: 109.8mm (4.32 inches)
Seat Height: 37.1 inches
Ground Clearance: 13.3 inches
Dry Weight: 213 pounds
Fuel Capacity: 2.0 gallons
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  #11  
Old 08-12-2005, 05:46 PM
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Default Re: CR250 Model Year Changes: 1998-2005

Okay, I'm done now...
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  #12  
Old 08-12-2005, 06:50 PM
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Default Re: CR250 Model Year Changes: 1998-2005

If there was ever a question (and there have been a few) about my bike Faded has answered everything I've ever wanted to know.........

Faded......you the man!!!you the man.


How long did it take you to write all this??
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  #13  
Old 08-12-2005, 06:59 PM
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Default Re: CR250 Model Year Changes: 1998-2005

Quote:
Originally Posted by KKXR400R

Faded......you the man!!!you the man.


How long did it take you to write all this??
MY MONEY IS ON
CUT-N-PASTE BRO
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  #14  
Old 08-12-2005, 09:38 PM
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Default Re: CR250 Model Year Changes: 1998-2005

You forgot 2006.

Bold new graphics



I hear the death bell ringing....................................

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  #15  
Old 08-12-2005, 11:09 PM
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Default Re: CR250 Model Year Changes: 1998-2005

Do I hear ViNTAGE Dave looking towards a yamaha?How cool would that be!
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  #16  
Old 08-12-2005, 11:52 PM
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Default Re: CR250 Model Year Changes: 1998-2005

Not unless they bring back YELLOW as a permanent color
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  #17  
Old 08-13-2005, 11:34 AM
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Default Re: CR250 Model Year Changes: 1998-2005

2006

NEW FOR 2006:

ENGINE:
  • Reed valve mounting angle to maximize charge flow.


SPECIFICATIONS:
Model: CR250R
Engine Type: 249cc liquid-cooled single-cylinder two-stroke with electronically controlled RC valve
Bore And Stroke: 66.4mm x 72mm
Compression Ratio: 8.5:1
Induction: Six-petal crankcase reed-valve
Carburetion: 38mm Mikuni TMX flat-slide with throttle position sensor (TPS)
Ignition: CD with three-dimensional mapping and electronic advance
Transmission: Close-ratio five-speed
Final Drive: #520 chain; 13T/48T
Suspension Front: 47mm inverted Showa cartridge fork with 16-position rebound and 16-position compression damping adjustability; 12.4 inches travel
Suspension Rear: Pro-Link Showa single shock with spring preload, 17-position rebound damping adjustability, and compression damping adjustment separated into low-speed (13 positions) and high-speed (3.5 turns); 12.6 inches travel
Brakes Front: Single 240mm disc with twin-piston caliper
Brakes Rear: Single 240mm disc
Tires Front: 80/100-21
Tires Rear: 110/90-19
Wheelbase: 58.3 inches
Rake (Caster Angle): 26.50°
Trail: 109.8mm (4.32 inches)
Seat Height: 37.1 inches
Ground Clearance: 13.3 inches
Dry Weight: 213 pounds
Fuel Capacity: 2.0 gallons


Quote:
Originally Posted by Vintage Dave393
I hear the death bell ringing....................................
VD is right, not many changes.
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Last edited by Faded; 08-13-2005 at 11:36 AM.
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  #18  
Old 08-13-2005, 11:35 AM
Faded's Avatar
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Default Re: CR250 Model Year Changes: 1998-2005

Quote:
Originally Posted by MOOSEKNUCKLE
MY MONEY IS ON
CUT-N-PASTE BRO
Yes, information taken from [Only registered and activated users can see links. ] and edited to reflect model year changes.
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  #19  
Old 08-13-2005, 12:20 PM
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Default Re: CR250 Model Year Changes: 1998-2005

funny,,,they never mentioned the transmission changes anywhere.
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  #20  
Old 08-14-2005, 08:05 PM
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Default Re: CR250 Model Year Changes: 1998-2005

Quote:
Originally Posted by ossagp
funny,,,they never mentioned the transmission changes anywhere.
Must fit under "new engine cases" or something to that effect...
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