SBC Domed Piston Set 4.155 Bore +5.6cc

The JE PISTONS SBC Domed Piston Set 4.155 Bore +5.6cc is engineered for serious small-block Chevy builders who are looking to enhance their engine's performance. This piston set is ideal for applications requiring higher compression ratios, whether for street use or competitive racing. It is designed to deliver the precision and reliability that builders demand when optimizing their engines.

Constructed from premium forged aluminum alloy, this piston set features a domed crown design that increases combustion chamber volume efficiency. The +5.6cc compression increase translates to measurable gains in volumetric efficiency and fuel burn rate, making it suitable for both forced-induction and naturally aspirated applications. JE Pistons has also implemented proprietary thermal treatments and optimized ring groove geometry to enhance durability and performance under extreme conditions.

Engine builders working on 383, 400, or 427 small-block platforms will find this piston set particularly beneficial, as it allows for controlled compression increases without the need for oversized bore diameters or deck height sacrifices. Proper installation requires attention to ring gap setup and piston pin fit verification, ensuring optimal performance and longevity in high-RPM operations.