Wiseco K452X125 Professional Series LS Forged Piston Kit 4.125 in. Bore -20cc Dish

The Wiseco K452X125 Professional Series Piston Kit is a complete forged piston set engineered for high-performance Chevrolet LS platform engine builds. Forged and machined in the USA from 2618 high-strength aluminum alloy, these pistons are built to handle the demands of heavy- to severe-duty race applications while remaining equally at home in aggressive street builds.

This kit features a 4.125-inch bore, a -20cc reverse dome (dish) crown, and a 10.1:1 compression ratio with a 66cc combustion chamber. The 1.110-inch compression height and 0.927-inch wrist pin diameter are matched to a 6.125-inch rod length and 4.000-inch stroke, making this an ideal choice for LS7-based stroker configurations.

Key Features:

• ArmorGlide® Skirt Coating — reduces friction, improves wear resistance, and allows tighter piston-to-wall fitment for quieter operation and maximized power
• 2618 Forged Aluminum Construction — engineered for improved tensile strength under high-heat, high-stress race conditions
• Anti-Detonation & Pressure Seal Grooves — enhance ring seal integrity under extreme combustion pressures
• Reluctor Ring Clearance — accommodates the reluctor ring on stroker cranks without requiring pin boss notching
• Offset Pin Design — mirrors OEM pin offset geometry; skirt shape optimized for street and track applications
• Gas-Nitrided Rings Included — ring pack sized 1.2mm / 1.2mm / 3.0mm for optimal sealing and longevity
• Pin Upgrade Recommended Over 700 HP — upgrade to Pin P/N S718 (.150-inch wall pin with Spirolox) for extreme power applications

Wiseco's Professional Series piston kits represent a no-compromise approach to performance engine building, with each set engineered, forged, and machined in the USA. Whether you're building a naturally aspirated LS7 stroker or a forced-induction street/strip engine, the K452X125 delivers the precision and durability required for consistent, high-output performance.