Maxseal Piston Ring Set 4.000 Bore 2.0 1.5 4.0mm

The Total Seal Maxseal Piston Ring Set 4.000 Bore with 2.0 x 1.5 x 4.0mm dimensions is a premium file-fit piston ring kit engineered for high-performance eight-cylinder engine applications. This gapless ring design delivers superior compression sealing and reduced blowby, making it the choice for serious engine builders and racing enthusiasts who demand maximum power output and longevity from their builds.

Built from ductile iron construction, this piston ring set provides the hardness and resilience needed for sustained high-RPM operation while maintaining conformability to ring grooves under thermal stress. The 4.000-inch bore specification fits a wide range of big-block and small-block engine architectures common in performance automotive applications. Standard tension characteristics ensure balanced side clearance and proper ring seal without excessive friction loss. File-fit design requires precision honing to specification, allowing builders to achieve optimal ring-to-bore clearance tailored to their engine's compression characteristics and intended duty cycle.

This eight-cylinder piston ring kit serves engine rebuilders, performance shops, and experienced home machinists undertaking comprehensive engine reconditioning. Whether restoring a street performance engine, preparing a competition platform, or building a custom powerplant, Total Seal's reputation for precision-manufactured ring sets makes the Maxseal line a trusted specification among builders who prioritize reliable compression sealing and repeatable results across multiple builds.

The gapless ring design represents a key advantage in minimizing blowby losses that can reduce efficiency and increase crankcase pressure—critical factors in maintaining fuel economy and engine stability during both cruise and full-load conditions. Proper ring installation and honing procedure are essential to realizing the performance benefits this precision component delivers.