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 CRF450R’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 CRF450R’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

Shorter for 2017, the CRF450R’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.

Extra durability
 

Extra-strong transmission gears enhance durability while delivering smooth, sure shifts.

Lighter, more-responsive frame

Not only is the CRF450R’s improved twin-spar aluminum frame lighter for 2017, its torsional stiffness has been reduced to give you more feedback and to improve turn-in and corner-exit performance, without giving up high-speed stability.

Latest Showa fork

Easy to tune to match changing track conditions or your riding style, the CRF450R’s new Showa coil-spring fork was developed to work in conjunction with the improved chassis for enhanced traction, agility and stability.

Keeping cool

A new front fender and reshaped tank shrouds increase airflow to the radiators, keeping the engine running at peak efficacy from gate drop to checkered flag.

Excellent traction

Dunlop MX3S tires offer excellent traction in a wide variety of conditions.

Titanium fuel tank

The CRF450R’s new titanium fuel tank reduces high-mounted weight, thereby lowering centre of gravity and improving mass centralization.

Agility plus comfort

Revised rider ergonomics with a very narrow midsection allow you to fully utilize the CRF450R’s incredible agility.

Easy to adjust

Quick-adjust clutch perch simplifies cable adjustment.

Reduced rider fatigue

Aluminum handlebar is rubber-mounted to reduce rider fatigue and improve comfort.

Preventative indicator

The engine stop switch with integrated LED indicator lets you know if the PGM-FI system is working properly.