Wiseco K0039B105 Chevy Big Block 20cc Dome Forged Piston 4.105 in. Bore 1.170 in. CH

The Wiseco K0039B105 is a Professional Series forged racing piston designed for Chevrolet Big Block engines. Featuring a 20cc dome, 1.170-inch compression height, and 16-degree valve reliefs, this piston is purpose-built for high-compression race builds demanding maximum power and durability.

Key Features:

• 4.105 in. bore diameter for precise cylinder fitment
• 20cc dome for elevated compression ratios in Big Block Chevy applications
• 1.170 in. compression height (CH) for proper deck clearance
• 16-degree valve reliefs for compatibility with performance cylinder heads
• Engineered, forged, and machined in the USA from 2618 aluminum for superior tensile strength and durability
• ArmorGlide® skirt coating reduces operating friction, resists seizure, and promotes quieter operation
• Designed for heavy to severe-duty race builds, including boosted and naturally aspirated applications

Wiseco Professional Series pistons are no-expense-spared components built for serious racers and engine builders. Manufactured at Wiseco's Mentor, Ohio facility, each piston is held to strict tolerances to ensure consistent performance and long service life in demanding Big Block Chevy race and high-performance street builds.