Description The DEF Racing 2021-2025 Honda CRF450R Billet Drag Race & Flat Track “Mile” Camshaft. Engineered for serious racers, this camshaft is optimized to significantly enhance mid to top-end horsepower. For those looking for maximum mid to top end power and willing to give up a little low-end torque this is the cam you need. Exhaust Lift: 0.405″ / 10.28mm Intake Lift: 0.442″ /  11.22mm Key Features: Performance: Designed specifically for drag racing and flat track applications, this camshaft allows for maximum airflow. With big lift and duration, it translates to explosive power gains where you need it most. Durable Billet Construction: Crafted from high-quality billet material, this camshaft offers superior strength and durability, ensuring long-lasting performance during intense racing conditions. Compatibility: DEF Racing Valve Spring Kit required! Recommend using with a high compression piston and race fuel! Works well with stock and larger bores. Note: For best results, your engine technician should perform a few critical measurements, including piston-to-valve clearance, camshaft lobe centers, and a dyno tune! Related