Piston Ring Set 4.130 Bore 1.0 1.0 2.0mm

The Piston Ring Set 4.130 Bore 1.0 1.0 2.0mm by MAHLE PISTONS is engineered for high-performance and racing engine builds that demand precision ring control and superior sealing. This file-fit ring set is designed for enthusiasts and professional builders constructing 8-cylinder engines with a 4.130-inch bore specification. Whether you're assembling a stroker motor, a naturally aspirated performance engine, or a displacement-increased platform, this MAHLE ring set delivers the reliability and compression stability that serious builders expect from a trusted OEM-quality manufacturer.

Constructed from high-strength steel with HV385 thermal treatment, the Piston Ring Set 4.130 Bore features a three-piece configuration with 1.0mm top ring, 1.0mm second ring, and 2.0mm oil control ring geometry—a classic profile proven in both street and competition applications. The standard tension specification ensures proper ring-to-wall contact without excessive friction, critical for achieving proper blow-by control while minimizing parasitic horsepower loss. File-fit design requires careful honing and gap matching during installation, allowing builders to optimize ring clearances for their specific combustion chamber and fuel octane requirements. The thermal treatment hardness resists scuffing and wear, maintaining seal integrity across extended rpm ranges and high-boost environments.

This ring set is ideal for engine builders, performance shops, and dedicated enthusiasts restoring or upgrading 8-cylinder small-block and big-block platforms, particularly those working with aftermarket pistons that specify a 4.130-inch bore diameter. File-fit rings demand precision assembly—gap spacing should be measured and filed to manufacturer specifications before installation to prevent ring sticking or excessive blow-by. Compatibility spans a wide range of domestic V8 architectures when bore size matches precisely. Proper installation with quality ring compressor tools, correct piston-to-wall clearance, and meticulous gapping will yield dependable compression, minimal oil consumption, and extended engine life.