Calling all dirt bike and ATV mechanics! Doing a valve adjustment on a four-stroke engine? You need the right shims to get those clearances perfect. This FHSJXR kit gives you a complete professional assortment of 52 valve shims, each with a 9.48mm outer diameter – the size used by a ton of popular Japanese bikes.\n\nThe kit covers a huge range of thicknesses. You get one shim of each size from 1.20mm all the way up to 3.50mm, increasing in 0.05mm increments. Then it continues from 3.50mm to 4.00mm in 0.10mm increments. This wide selection means you'll almost certainly have the exact size you need to dial in the clearance without having to grind down a thicker shim.\n\nCompatibility is extensive. This kit works for many Honda models (CRF250R/RX, CRF450R/RX/X, TRX450R), Suzuki (DR-Z400, DR-Z400SM, LT-Z400, RMZ450), Yamaha (YZ/WR250F/450F, YFZ450), Kawasaki (KX450F, KFX450R), and even Arctic Cat DVX 400 ATVs from the mid-2000s. Always double-check your specific bike's manual, but this covers a massive list of models from about 2002-2021.\n\nThe shims are made from high-quality, carburized steel. They're heat-treated to be strong, durable, resistant to wear, high temperatures, and corrosion. They have a good finish and precise tolerances, which is critical for accurate valve lash.\n\nKeeping your engine's valve clearance in spec is vital for performance, reliability, and preventing costly damage. This kit is an essential tool for any serious rider or shop that maintains their own high-performance four-strokes. Get your valve train quiet and efficient!
