4.625 CS Piston Ring Set .9 .9 3.0mm

The 4.625 CS Piston Ring Set .9 .9 3.0mm from TOTAL SEAL is designed for serious engine builders and high-performance mechanics who require precision ring control and extended ring life. This piston ring set is essential for reliable sealing in 4.625-inch bore engines, whether for street performance builds or well-tuned race engines.

TOTAL SEAL's CS (Conventional Steel) design is respected in the automotive community for its ability to reduce blowby and improve combustion efficiency. The .9mm top ring and .9mm second ring configuration, along with a 3.0mm oil ring thickness, provide optimal gas sealing while minimizing friction losses that can rob horsepower and increase heat rejection. This three-piece design allows each ring to specialize in its function, ensuring maximum performance.

Engine builders working with small-block and mid-displacement platforms will find this ring set particularly beneficial when aiming for reliable horsepower in naturally aspirated or moderately boosted applications. Proper installation requires ring gap filing to match your specific cylinder bore finish and piston design, which is a crucial step for achieving optimal performance.