Hot Cams Valve Shim Kit KTM 450-1190 The Hot Cams Valve Shim Kit offers precision for valve adjustments, featuring 10mm OD shims in sizes from 1.85mm to 3.25mm by 0.05mm increments, with three shims per size. Its durability is assured with a hardness rating of 55-60 Hrc. This complete set ensures reliable performance for meticulous engine tuning. Features: 10mm OD 1.85 to 3.25 mm Kit .05 mm Increments 3 of each shim Hardness 55-60 HRC Sold as a kit