The 2027 Honda CRF450RX takes a radical leap forward by adopting the exact same ground-up chassis and engine revolution as its motocross sibling, but fine-tunes it entirely for off-road cross-country dominance. Boasting a massive 10% increase in power, 4% more torque, and a stunning 5.6kg weight drop, this powerhouse is lighter, slimmer, and drastically more agile. Featuring an 11.6% lighter aluminum swingarm, exclusive RX-tuned Showa suspension with a Dynamic Blow System, a highly protective bash plate, and a narrower 7.1-liter titanium fuel tank shared with the R model, it is an elite, woods-ready weapon wrapped in sustainable PIR recycled bodywork and striking HRC Tricolour racing graphics.
| Category |
Specification |
| Engine |
449.7cc liquid-cooled single-cylinder four-stroke, UNICAM SOHC, 4-valve |
| Displacement |
449.7 cc |
| Power |
10% increase at peak (Approx. 60+ hp), RX-specific ECU maps |
| Torque |
4% increase across rev-range |
| Fuel System |
PGM-FI Fuel injection, downdraft intake |
| Transmission |
5-speed manual, 17mm narrower width, split resin needle bearings |
| Final Drive |
Chain; 51-tooth fully machined rear sprocket |
| Suspension (Front) |
Showa 49mm USD forks, Dynamic Blow System (DBS), dedicated RX settings, stiffer 5.2N/mm springs, Kashima coated |
| Suspension (Rear) |
Showa 50mm single shock with oscillation-limiting upper mount, Pro-Link linkage, dedicated RX settings |
| Brakes (Front) |
HRC-spec hydraulic twin-piston caliper, 260mm wave-pattern disc |
| Brakes (Rear) |
Hydraulic single-piston caliper, 240mm wave-pattern disc |
| Wheels |
Black DID aluminium rims; Front: 21 x 1.6in, Rear: Lightened HRC-spec 18 x 2.15in cross-country wheel |
| Tyres |
Dunlop AT81 Geomax; Front: 21-inch, Rear: 18-inch Enduro/Cross-Country ready |
| Seat Height |
953 mm (37.5 in) |
| Wheelbase |
1490 mm (58.7 in) |
| Rake / Trail |
27.5° / 116.7 mm |
| Tank Capacity / Range |
7.1 L (1.88 US gal) Slim Titanium tank (Shared with CRF450R) |
| Weight (Wet) |
108.8 kg (239.8 lbs) Kerb weight / 103.5 kg (228.2 lbs) Fuel-free |
| Display |
N/A (Left handlebar LED indicator cluster for EMSB/HSTC) |
| Service Interval |
N/A |
