Wiseco RED0085X165 RED Series LS Stroker -20cc Dish Piston Set 4.165 Bore

The Wiseco RED0085X165 is part of the RED Series (Race Engineered Design) forged piston lineup, purpose-built for Chevrolet LS stroker engine builds. This set features a 4.165-inch bore, 1.105-inch compression height, and a -20cc dish for optimized compression tuning in long-stroke LS applications. Designed specifically around a 4.000-inch stroke, these pistons deliver the strength, precision, and reliability demanded by high-performance street and race builds.

Key Features:

• -20cc dish crown engineered for proper compression ratios in big-bore, long-stroke LS stroker combinations
• Strutted skirt design allows piston-to-wall clearances as tight as .004 inch, minimizing piston rock and bore wear
• 12° multi-fit valve pocket combo provides interchangeability across a wide range of cathedral- and rectangle-port cylinder heads
• Radiused and de-burred valve pockets promote optimized airflow and improved detonation resistance
• Anti-detonation grooves around the ring lands help keep the top ring groove free of carbon buildup
• ArmorGlide skirt coating — a moly-based compound — reduces friction, noise, and long-term wear
• Forged in-house from 2618 high-tensile-strength alloy for superior strength and durability in power-adder applications
• Included H13 tool steel wrist pin and 1.2mm / 1.2mm / 3.0mm GFX ring pack for an optimal seal, reduced friction, and superior oil control
• Engineered, forged, and machined in the USA at Wiseco's Mentor, Ohio manufacturing facility

Whether building a naturally aspirated stroker or a power-adder combination, the Wiseco RED Series delivers the balance of performance and value that serious engine builders demand.