Honda CRF150R

Honda CRF150R
Manufacturer Honda
Production 2007present
Predecessor Honda CR85R
Class Motocross
Engine 149cc Liquid-Cooled single cylinder four stroke
Transmission 5 Speed Manual
Suspension Front: 37mm Showa Fork
Rear: Pro-Link Single Shock
Brakes Front: Single 240mm Disc
Rear: Single 190mm Disc
Tires 70/100-19. Rear: 90/100-16
Rake, trail 27o48'
Wheelbase 50.6 inches
Seat height 32.8 inches (Small Wheel); 34.0 inches (Big Wheel)
Fuel capacity 1.14 gallons
Related Honda CRF250R
Honda CRF150F

The Honda CRF150R is a racing dirtbike that was released in 2006 for the 2007 model year. It competes in the Mini Class against many 85cc Two-Stroke Bikes; however, can not race in the 85cc mod. or stock class. It must race in the Supermini class.[1] All of Honda's 2008 models are all four strokes whereas in years past, some of their racing bikes were two strokes. The 150R features a powerful Unicam four-valve liquid-cooled engine that produces impressive power at a wide RPM range that only weighs 43.6 pounds. With its fully adjustable Showa suspension, high-quality Dunlop Tires and disc brakes front and rear, this is one of the best mini racing bikes Honda has made. The CRF150R come in two versions: the regular and the Expert.

The Expert costs an extra $100 and offering several new features specifically for larger riders. Features include a taller seat height, higher ground clearance, larger wheelbase, increased tire size, longer swing arm and larger rear sprocket for better acceleration with a heavier rider. All of these Expert features only add an additional 4 pounds. This model is referred to as the CRF150RB R meaning Race, and B meaning Brady.

Specifications

All specifications are manufacturer claimed.

2007[2][3] 2008[4][5] 2007[6] 2008[7]
Model CRF150R CRF150R Expert (CFR150RB)
Engine
Engine Type 149 cc (9.1 cu in) Liquid-cooled single cylinder four-stroke
Bore/Stroke 66 mm (2.6 in) x 43.7 mm (1.72 in)
Compression Ratio 11.7:1
Valve Train Unicam
Carburetion Keihin 32mm flat side with throttle position sensor (TPS)
Ignition Solid-state CD with electronic advance
Drivetrain
Transmission Close-Ratio Five Speed Manual
Final Drive #420 steel chain, 15T/50T #420 steel chain, 15T/56T
Chassis/Suspension/Brakes
Front Suspension 37 mm fully adjustable leading-axle inverted Showa cartridge fork; 10.8 in (274 mm) travel
Rear Suspension Pro-Link fully adjustable Showa single shock; 10.8 in (274 mm) travel Pro-Link fully adjustable Showa single shock; 11.5 in (292 mm) travel
Front Brakes Single 240 mm Disc
Rear Brakes Single 190 mm Disc
Front Tire 70/100-17 70/100-19
Rear Tire 90/100-14 90/100-16
Dimensions
Rake 27.02 degrees 27.48 degrees
Trail 78.0 mm (3.07 in) 96.0 mm (3.78 in)
Wheelbase 49.6 in (1,260 mm) 50.6 in (1,285 mm)
Seat Height 32.8 in (833 mm) 34.1 in (866 mm)
Ground Clearance 11.9 in (302 mm) Brady 13.3 in (338 mm)
Dry Weight 165.3 lb (75.0 kg) 169.7 lb (77.0 kg)
Fuel Capacity 1.14 US gallons (4.3 l; 0.95 imp gal)

References

  1. http://www.amadirectlink.com/rulebooks/AmateurRules2008.pdf page: 63 (page 33 of 49 of Adobe Reader)
  2. 2007 Honda CRF150R Specifications article from PowerSportsNetwork.com
  3. 2007 Honda CRF150R Specifications article from Hondanews.com
  4. 2008 Honda CRF150R Specifications article from PowerSportsNetwork.com
  5. 2008 Honda CRF150R Specifications article from Hondanews.com
  6. 2007 Honda CRF150R Expert Specifications article from PowerSportsNetwork.com
  7. 2008 Honda CRF150R Expert Specifications article from PowerSportsNetwork.com
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