![]() DOHC ENGINE LAYOUT: The CRF250R uses a double-overhead-cam (DOHC) engine layout with a unique finger-follower rocker design.The engine breathes and revs-the two keys to making power in the motocross world. BIG BORE / SHORT STROKE: The CRF250R’s 79.0mm bore and short 50.9mm stroke let our engineers create a high-revving engine with plenty of room for large valves. ![]() Plus, the clutch pull is lighter, and you get improved engagement feel. That means less slip at peak horsepower, better torque transmission through the clutch pack and greater durability.
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