Pro X Steel Intake Valve/Spring Kit-FitsHonda CRF250R 2004-2007-Motorcross
Sick of doing valve adjustments yet? You’re not alone. Pro X manufactures these exhaust valves so close to OEM specs you can reuse the same retainers, bases, and seals without any modifications. It all begins with a 21-4N stainless steel valve that is black nitrided for an unprecedented combination of core strength and surface friction […]