steel | Valve spring

Category: steel

Pro X Steel Intake Valve/Spring Kit-FitsHonda CRF250R 2004-2007-Motorcross

August 16, 2024 Comments Off Posted in: steel

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 […]

Steel Intake Valve & Spring Kit Yamaha YZ450F 03-09 WR450F 03-15 YFZ450R 04-19

June 8, 2024 Comments Off Posted in: steel

ProX Steel Valve & Spring Conversion Kit For Yamaha YZ450. Replaces OEM Titanium Valves. Yamaha WR 450 F (2003 – 2015). Yamaha YZ 450 F (2003 – 2009). Steel Valves & Springs. We are happy to help you select the proper replacement part for your application but we trust that you have the proper skills, […]