KB PERFORMANCE Piston Kit - Twin Cam 88 KB425C.STD

If you're building a high-revving Twin Cam 88 engine that demands precision and longevity, KB Performance pistons are engineered to deliver tighter tolerances and superior ring seal than standard replacements. The diamond-machined construction and tight weight control eliminate piston rock, reduce blowby, and extend ring life—critical advantages whether you're on the track or pushing your street engine to its limits. This is the kind of foundational work that separates a properly built motor from one that's merely assembled.

• T-5 heat-treated 390 hypereutectic aluminum
• Diamond-machined to ±1 gram weight tolerance
• ±0.0005" piston-to-piston dimensional consistency
• Allows tighter piston fit
• Reduces piston rock significantly
• Improves ring seal performance
• Extends piston and ring life
• Includes two pistons, pins, spiral-lock clips
• Hastings moly rings included
• Bolt-in replacement (Twin Cam 88)
• Requires attention to ring end gap
• Requires attention to piston clearance
• Special lock rings available separately