Wiseco Valve Shim Refill Kits - 10.0 mm from IPD Racing — 9 part numbers in stock and shipping from our Texas warehouse. Popular fitments here include Valve Shim Refill Kit- 10.0 x 3.10mm (5), Valve Shim Refill Kit- 10.0 x 3.05mm (5), Valve Shim Refill Kit- 10.0 x 2.95mm (5). Wiseco has forged its own pistons in Mentor, Ohio since 1941, and every part in this category is built for engines that get used hard, not babied. Four-stroke valve clearance is set with shims under the bucket. Each refill kit holds five shims of one diameter and thickness, so you can dial clearance to spec without buying an entire assortment tray. Need help confirming fitment for your machine? Call or email IPD Racing before you order — we would rather answer a question than process a return.