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Honda’s Unicam® cylinder heads combine the best of single- and double-overhead-cam designs.
The configuration contributes to a compact engine that saves weight over a comparable dual-overhead-camshaft motor and also permits a narrow included valve angle.
This flattens the combustion chamber to facilitate ignition flame propagation, allowing a high compression ratio. Since less space is taken up in the cylinder head, the camshaft sits lower in the head for a more compact engine and a lower center of gravity.
Lightweight titanium intake and exhaust valves permit use of smaller valve springs, reducing overall engine height.
Begins Dec. 12
Tires are always a critical part of any on/off-road bike, and we’ve hooked you up with some great ones here.
The CRF450X’s Dunlop MX52 tires give you good superior off-road traction in a wide variety of terrain and conditions.
do you want new challenges in exciting new places?
The Gear-Driven Counter balancer reduces vibration and drives the water pump. Eight clutch plates provide the surface area necessary to handle the engine’s massive torque, while carefully matched clutch springs provide a light feel at the lever.