KB PERFORMANCE RING SET 88"+.020 TC

Manufactured from high-strength, T-5, heat-treated, 390 hypereutectic aluminum alloyAllow a tighter fit and longer piston and ring lifeDiamond-machined pistons are held to plus or minus one gram weight and less than one-half-thousandth-inch (.0005") tolerances from piston to pistonEach kit contains two pistons, pins, spiral-lock pin clips and Hastings moly ringsReplacement piston rings and pin lock rings available separatelyNOTE: KB pistons can be installed tighter than other pistons. This results in less piston rock and better ring seal. Please read instructions included with piston for correct piston clearance.NOTE: Due to the thermal conductivity and design of KB pistons, special attention is required to the top ring end gap. Please read instructions furnished with piston for correct ring installation.NOTE: Each replacement ring PART # denotes rings for two pistons, except 84-99 Big Bore kits and 99-06 88" Twin Cam kits, which require two sets.