02-14 HONDA CRF450R: HOTCAMS Valve Shim Kit (SILVER) Thickness: 1.20 to 3.50 mm Diameter: 9.48 mmIncludes three 7.48mm OD shims in each size from 1.20mm to 3.50 in .05mm increments. Housing included: YesIncludes three 7.48mm OD shims in each size from 1.20mm to 3.50 in .05mm increments.