2017 Honda® CRF450RX

2017 Honda® CRF® 450RX

Features may include:

• Power to victory

The Unicam engine that powers both the CRF® 450RX and CRF® 450R has been radically improved for 2017, with more horsepower, more torque, and a higher rev limit. The RX’s engine has special ignition mapping to suit the unique demands of cross-country and endurocross competition.

• New cylinder head

Completely new Unicam cylinder head design uses finger rocker arms, oval cross-section valve springs, bigger intake valves, and increased valve lift to boost horsepower and allow a higher rev limit.

• Improved combustion efficiency

By straightening the intake path, reducing valve angle, and revising both combustion chamber and piston shape, engineers were able to improve flow and increase compression ratio for an even bigger power boost

• Better lubrication

A new scavenge pump system with no separate oil tank improves engine lubrication, reduces friction, and requires less oil for reduced overall engine weight.

• Programmed for power

The CRF® 450RX’s Programmed Fuel Injection (PGM-FI) settings contribute to the engine’s strong low-end torque, remarkable top-end power and generous over-rev capability.

• Engine Mode Select button

The CRF® 450RX’s Engine Mode Select (EMS) system lets you modify fuel-injection and ignition mapping with the simple push of a handlebar-mounted button. Choose between Standard, Smooth and Aggressive to dial in the best power curve for better starts, better drive out of corners, better traction, or simply to better suit your riding style. Mode selection is easily accomplished without changing your hand position or shutting down the engine (as long as the engine is idling).

• Twin to win

The CRF®
450RX’s twin-muffler exhaust system not only contributes to the engine’s exceptional power characteristics, it’s also positioned tightly to the frame’s centre to take weight off the rear end and optimize mass centralization for improved handling.

• Easy starting

Standard electric start – with the kick-start system still installed as backup – gets you going quickly and effortlessly with the push of a button.

• Special gearing

Transmission ratios and final gearing are unique to the CRF® 450RX for optimum performance on cross-country and endurocross courses. Extra-strong transmission gears enhance durability while delivering smooth, sure shifts.