Wiseco K0157B105 Big Block Chevy Brodix Forged Piston CH Bore - SR20 28cc 1.270 4.155

The Wiseco K0157B105 is a forged performance piston engineered for Big Block Chevrolet engines built with Brodix SR20 cylinder heads. Featuring a 28cc combustion chamber volume and a 1.270" compression height, this piston is purpose-built to complement the SR20 head's port and combustion chamber design, helping builders achieve accurate compression ratios in high-performance street and race applications.

Wiseco pistons are manufactured from 2618 or 4032 aluminum alloy forgings — among the strongest and most thermally stable materials available for engine building. This "Build to Stock" (BTS) designation means the piston is produced to your specified bore size, allowing precise fitment and optimal ring seal. The 4.155" (105mm) bore diameter is indicated by the B105 suffix in the part number.

Key Features:

• Application: Big Block Chevrolet (BBC) with Brodix SR20 cylinder heads
• Bore Size: 4.155" (105mm)
• Compression Height: 1.270"
• Combustion Chamber Volume: 28cc
• Build Type: Build to Stock (BTS) — precision-machined to specified bore
• Construction: High-strength forged aluminum alloy
• Manufacturer: Wiseco Pistons — a trusted name in performance forged pistons

Wiseco's forged pistons offer superior strength and durability over cast alternatives, making the K0157B105 an excellent choice for supercharged, turbocharged, nitrous, or naturally aspirated Big Block Chevy builds. Always verify stroke, rod length, and deck height when selecting pistons to ensure correct compression ratio for your specific combination.