Wiseco K0434B155 LSX Stroker Max Series Piston Set 4.155 in. Bore 4.000 in. Stroke +11.7cc Max Dome

The Wiseco K0434B155 is a Stroker Max Series forged piston set designed for Chevrolet LS/LSX engines running a 4.000-inch stroke. Featuring a 4.155-inch bore and a +11.7cc max dome, this kit is engineered to maximize compression ratios in high-displacement stroker builds running naturally aspirated applications.

Key Specifications:

• Bore: 4.155 in.
• Stroke: 4.000 in.
• Compression Height: 1.110 in.
• Dome Volume: +11.7cc (Max Dome)
• Rod Length: 6.125 in.
• Pin Diameter: 0.927 in. (taper wall, 0.170 in.)
• Wrist Pin Retention: Spirolox®
• Piston Weight: 520 grams
• Material: 2618 high-strength forged aluminum alloy
• Ring Grooves: .043 in. / .043 in. / 3.0mm (rings sold separately)

Features:

• ArmorGlide® Skirt Coating — reduces friction, improves wear resistance, and allows tighter bore fitment for quieter, more efficient operation
• Anti-detonation and pressure seal grooves — enhance ring seal and reduce piston rock noise for improved performance
• Vertical gas ports — aid ring seating and combustion efficiency
• 2618 high-strength alloy — ideal for high-stress, high-temperature stroker applications
• Taper wall wrist pins with Spirolox® retention — lightweight and secure pin retention system
• Engineered, forged, and machined in the USA at Wiseco's Mentor, Ohio facility

• Wrist pins and Spirolox® clips
• Note: Rings (.043/.043/3.0mm) are sold separately

Wiseco's Stroker Max Series is purpose-built for LS stroker combinations, delivering the strength and precision needed to extract maximum power from your engine build. Compression ratio at .005 in. deck with a .051 in. head gasket is approximately 13.5:1.