Like its superstar MX sibling Honda’s cross-country, competition-ready CRF450RX took a major evolutionary leap forward in 21YM and receives further refinements for 22YM, offering smoother drivability from new ECU settings plus a damping re-valve for the Showa suspension improving balance between front and rear, and overall control. The frame remains unchanged, and like the 22YM CRF450R, is the exact same frame used on the CRF450RW piloted to back-to-back MXGP World Championships by Tim Gajser in 2019 and 2020.
For 21YM, like its motocross sibling, the CRF450RX receives a wide array of improvements under a development theme of ‘The ultimate off-road weapon'. Firstly it’s 2.3kg lighter thanks to a revised frame and subframe. The new frame and swingarm’s rigidity balance, combined with tighter chassis geometry, heightened ground clearance and suspension changes, are all targeted at creating optimal cornering performance.
The engine also benefits from HRC’s knowhow to give a strong focus on low- to mid-range torque. The decompressor has been relocated, airbox volume is up, the throttle body redesigned and exhaust ports re-shaped. The exhaust downpipe is new and a single muffler replaces dual mufflers.
A larger-volume hydraulic clutch has an even lighter lever action, while other weight-saving details include a smaller fuel pump and optimised magnesium cylinder head cover. New plastics, too, are lighter and slimmer to aid rider freedom and the seat is a smaller unit, lower at the back. Brush guards are now standard fit and the sidestand tucks away more neatly. A smart new all-red graphic scheme completes this major update.
|Engine Type||Liquid-cooled 4-stroke single cylinder uni-cam|
|Bore x Stroke (mm)||96.0 x 62.1|
|Front Brake||Single 260mm disk|
|Rear Brake||Single 240mm disk|
|Front Suspension||Showa 49mm USD Fork|
|Rear Suspension||Showa monoshock using Honda Pro-Link|
|Front Wheel||Aluminium spoke|
|Rear Wheel||Aluminium spoke|
|Dimensions||2,182 x 839 x 1,282mm|
|Frame Type||Aluminium twin tube|
|Fuel Tank Capacity||8 litres|
|Clutch||Wet type multi-plate|