Service your four-stroke dirt bike, ATV, or road motorcycle’s valvetrain with premium, OEM quality valvetrain components from ProX. We offer a comprehensive range of valvetrain parts, including titanium and steel intake and exhaust valves, valve and spring kits, valve seals, cam chains, and valve shims (including shim kits). ProX titanium valves, manufactured to OEM specifications, provide a direct replacement for OE titanium equipped engines, while our steel valve kits offer a durable and affordable alternative. Complete the job with our valve shims and shim kits, available in popular sizes for dirt bikes, motorcycles, ATVs, and more. Upgrade your valvetrain with precision-engineered components for superior performance and longevity.

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