MAHLE 930225465 PowerPak LS Piston & Ring Kit 4.065" Bore -12cc Dish

The MAHLE 930225465 PowerPak piston and ring kit delivers race-proven performance for GM LS engine builds. This complete kit features forged 4032 aluminum alloy pistons designed for 4.065" bore with a 3.622" stroke and -12.0cc dish configuration, making it ideal for high-performance street, sportsman, and pro class racing applications.

Each piston is precision-forged from 4032 aluminum alloy, which provides tighter piston-to-wall clearances and improved temperature stability compared to standard materials. The pistons feature forced pin oiling with machined oil drains for enhanced wrist pin lubrication, while CNC-machined pin bores ensure precise tolerances. All pistons are hand-deburred and treated with a dry phosphate coating on the exterior and pin bores to prevent ring micro-welding and pin galling during initial startup.

The piston skirts are coated with MAHLE's proprietary Grafal anti-friction coating, which reduces friction, increases scuffing resistance, and allows for closer fitting clearances with reduced engine noise.

This PowerPak kit is engineered with fully machined crowns, lightweight slipper skirt forgings, and radiused valve pockets. Backed by over 90 years of MAHLE racing heritage and technology, these pistons deliver the unmatched performance and durability that professional race teams depend on for LS engine builds.