The CRF450R has a 41mm FCR-type carburettor features four rollers on the flat slide, resulting in very light throttle effort, smooth operation, crisp throttle response and excellent rideability. Bottom of float chamber is designed to allow more fuel to pass to the main jet.

Also, an  8-bit digital CPU incorporates the capacitive discharge ignition (CDI), producing immediate data calculation and extremely accurate ignition for maximum performance.

The CRF450R has a Twin-sump lubrication system separates the oil supply for the crankshaft, piston and valve train from the clutch and transmission. This ensures a cool supply of oil to the clutch, eliminates clutch and transmission material contamination to the engine oil and reduces the amount of circulating oil and the required size of the oil pump.

Features

• New larger 41mm Keihin FCR carby.
• New smaller exhaust valve for improved flow and smoother power delivery.
• Engine decompression system is lighter and more compact.
• New link-type front brake master cylinder improves front braking power by 15 percent.
• New subframe allows the muffler to be mounted farther forward for better mass-centralisation.