Brand New!Unlike motocross where thereÂ’s intense activity for a relatively short period of time, most other off-road racing disciplines involve long days in the saddle. ItÂ’s not enough to go fast, you have to go fast all day, and fatigue becomes the enemy. This is especially true in the 450 class where higher horsepower levels add to the stress for even the fittest riders. Other manufacturers may also offer fatigue-reducing technologies like lightweight aluminum frames, automatic starter and rubber-mounted handle bars, some may even offer similar gear-driven, counter-balancers or steering dampers, but the CRF450 has something none of the competitors have; the CRFs patented Unicam engine design lowers centre of gravity and centralizes mass far better than traditional double overhead cam designs. This super compact engine makes those rapid left-right transitions seem almost effortless, something youÂ’ll really appreciate by the end of the day. And the engine is designed to help fight fatigue too. Thanks to technologies like liquid cooling, titanium valves, roller rocker arms and a twin-sump lubrication system it'll end the day feeling just as strong as when it started. CRF450X - go faster, longer.