Please select make, model and yearEngine Valves and Shim Kits
Valves and Spring Kits. High quality stainless steel intake and exhaust valves will restore performance and durability. Titanium Valves are also available. Find a great selection from brands like Kibble White, ProX, Faction and more for your Honda, Yamaha, KTM, Kawasaki and Suzuki.
James in TX
Expensive engine mod but if you are serious about powering up your YZ grab this and get to the front. Need to use VP u4.4 but you should already be using that if your racing at all . Be sure to set the new mapping to the ECU !Read All Reviews