2015 Honda CRF450R Motocross Motorcycle Revealed

Honda has released information on the 2015 Honda CRF450R motocross and supercross race bike.

The 2015 CRF450R is getting far more than a cosmetic upgrade this year, with the motor and suspension receiving major attention.

Leading the way in improvements are new KYB forks, a redesigned top end for the powerplant, programmable EFI, a shorter exhaust, larger front disc, and new Dunlop Geomax MX52 tires.

Here’s a rundown of the improvements to the 2015 Honda CRF450R:

  • New cylinder head for more top-end power, plus added overrev.
  • New exhaust system with larger-diameter pipe and exhaust outlet for more top-end power.
  • Overall exhaust system length is shorter and closer to the bike’s center of mass for improved handling.
  • Revised ignition map settings and new settings for the Dual-Timing PGM-FI fuel injection.
  • Peak power hits earlier in the rev range and continues longer than before.
  • New piston is stronger due to a new heat-treatment process.
  • New Engine Mode Select button allows the rider to easily select one of three different EFI/ignition maps to match track conditions.
  • HRC accessory tuning tool can be used to program custom maps actuated by the Engine Mode Select button.
  • New ACG flywheel incorporates more mass for smooth power delivery and enhanced low-end response, and makes it less prone to stalling or flame out.
  • Transmission gears are stronger.
  • New throttle return spring has a lighter pull.
  • New clutch cable design gives a lighter pull at the lever.
  • New KYB Pneumatic Spring Fork (PSF) offers five ways to adjust performance: high-speed and low-speed adjusters for both rebound and compression damping settings, plus air-spring adjustability.
  • New fork damper cartridge and other changes in fork construction result in a weight savings of more than 7 ounces.
  • Rear shock adjuster for rebound damping settings is now located for more convenient access.
  • New front/rear wave-style rotors with a larger 260mm front brake disc add to overall braking performance.
  • New-generation Dunlop Geomax MX52 motocross tires front and rear offer improved traction in a wide variety of terrain.
  • Front brake guide and radiator grill now feature a black finish
  • New fork covers. – All-new CRF graphic.The price of the 2015 Honda CRF450R has yet to be determined, but the bike will be available in September of this year.

2015 Honda CRF450R Specifications

Model: CRF450R
Engine Type: 449cc liquid-cooled single-cylinder four-stroke
Bore and Stroke: 96.0mm x 62.1mm
Compression ratio: 12.5:1
Valve Train: Unicam, four-valve; 36mm intake, titanium; 31mm exhaust, steel

Dual-Timing PGM-FI, 46mm throttle body


Full transistor with electronic advance

Transmission: Close-ratio five-speed
Final Drive:

#520 chain; 13T/48T


Front: 48mm inverted KYB PSF (Pneumatic Spring Fork) with air-adjustable spring rate, and rebound and compression-damping adjustability; 12.2 inches travel.
Rear: Pro-Link KYB single shock with adjustable spring preload, rebound damping adjustability, and compression damping adjustment separated into low-speed and high-speed; 12.4 inches travel


Front: Single 260mm wave-style disc with twin-piston caliper
Rear: Single 240mm wave-style disc


Front: Dunlop MX52 80/100-21
Rear: Dunlop MX52 120/80-19


58.7 inches

Rake (Caster angle): 27° 04’

116mm (4.6 inches)

Seat Height:

37.5 inches

Ground Clearance: 13.0 inches
Fuel Capacity: 1.7 gallons
Color: Red
Curb Weight: 243 pounds