CRF450R

 

CRF450R / Overview

From day one, the Honda CRF450R, has proved a winning package in the hands of professionals and amateurs alike. Motocross is a fast-moving sport, in every sense and on every level.  The CRF450R has constantly evolved, responding to competition and riders’ needs in equal measure.

The CRF450R was first launched with a four-stroke engine as a 2002 model, and achieved faster lap times, not only with outstanding peak power, but also because of a substantial increase in torque.  Adoption of Honda’s programmed fuel injection system (PGM-FI) for the 2009 model achieved more stable combustion, even under the most extreme race conditions.

Honda started mass-producing motocross bikes with an aluminum frame ahead of other manufacturers in 1997. With the 5th generation, 2009 model, the aim was to strike an ideal balance between rigidity and agility. Honda’s pursuit of the best possible bike for winning races prompted a thorough examination of the most efficient means of transmitting power and to achieve a more planted feel with greater traction.

It was identified that the key factor in enhancing competitiveness was to find the most effective means of incorporating ease of handling into a fast, competition-focused machine with absolute power and a highly rigid chassis. This led the direction of the new model.

Any new CRF450R is born, and has to be fully proven, in race conditions. Knowledge acquired by the HRC works team in the All-Japan Motocross Championship – with direct input from Factory squads in Europe and the U.S.A, as well as seven-time AMA Supercross champion Jeremy McGrath – was constantly fed back into development of the production bike.  Honda knows how much the smallest detail matters at the highest level of racing, but also to the rider who races for fun, or just simply for leisure.

CRF450R / Specification

ENGINE
Type 4 stroke, single cylinder, uni-cam
Displacement 449.7cc
Bore x Stroke 96.0 x  62.1
Compression Ratio 12.5:1
Max. Power Output 38.3KW @ 8,500 r/min
Max. Torque 47.7Nm @6,500 r/min
FUEL SYSTEM
Carburation FI
Fuel Tank Capacity 6.4L
ELECTRICAL SYSTEM
Ignition System Full transister
Starter Kick
DRIVETRAIN
Clutch Multi plate wet clutch
Transmission 5 speed, constant mesh
Primary Reduction 2.739
Gear Ratios
1st 1.8
2nd 1.47
3rd 1.235
4th 1.05
5th 0.909
Final Reduction 3.692  (48/13)
Final Drive Chain
FRAME
Type Aluminium twin tube
CHASSIS
Dimensions (LxWxH) 2191x827x1271mm
Wheelbase 1492mm
Caster Angle 27
Trail 116mm
Seat Height 953mm
Ground Clearance 330mm
Kerb Weight 111KG
SUSPENSION
Type
Front 48mm inverted Air Fork, 310mm stroke, fully adjustable
Rear Pro-link, Fully adjustable mono shock, 133.5 mm stroke, 315mm axle travel
WHEELS
Type Wire spoke
Rim size Fr: 21 x 1.60 /   Rr: 19 x 2.15
Tyre size Fr: 80/100-21  -  Rr: 120/80-19
BRAKES
Type: 240mm Hydraulic disc
Rear:
* Please note that the figures provided are results obtained by Honda under standardised testing conditions prescribed by WMTC. Tests are conducted on a rolling road using a standard version of the vehicle with only one rider and no additional optional equipment. Actual fuel consumption may vary depending on how you ride, how you maintain your vehicle, weather, road conditions, tire pressure, installation of accessories, cargo, rider and passenger weight, and other factors.
All specifications are provisional and subject to change without notice.

CRF450R / Videos

CRF450R / Downloads