Out of stock
SKU: TOTMS0690-5
MPN: MS0690 5
The Piston Ring Set 4.125 Gapless Top 1/16 1/16 3/16 by TOTAL SEAL is engineered for serious engine builders and mechanics who demand precision ring performance in high-output applications. This premium ring set is designed for 4.125-inch bore engines and serves as a critical replacement or upgrade component for performance builds, rebuilds, and racing platforms where ring blow-by and oil control directly impact horsepower, fuel economy, and engine longevity.
Each ring in this set features a gapless top compression ring configuration with precisely calculated end-gap specifications: 1/16-inch top ring, 1/16-inch second ring, and 3/16-inch oil ring. The gapless design minimizes combustion gas blow-by and maximizes ring seal during acceleration and peak cylinder pressure, which is critical for high-performance applications. The 1/16-inch gaps on the compression rings provide adequate thermal expansion clearance while maintaining tight control, and the 3/16-inch oil ring gap ensures reliable oil scraping without excessive drag.
TOTAL SEAL's proprietary ring material and finish deliver superior durability and faster break-in compared to OEM alternatives. This set is ideal for those assembling a stroker motor or refreshing a tired engine block, ensuring optimal performance and longevity. Whether you're optimizing ring gap for specific boost levels or fuel types, this TOTAL SEAL set delivers the dimensional accuracy and material quality that separates professional machine work from mediocre results.
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