Hastings Moly Piston Rings Std Size for 1200cc Big Twin Shovelhead

• Size: Std
• Type: Piston Ring Set
• UPC: 075538084273

**Moly Piston Rings for Big Twins** These high-performance moly-faced piston rings are designed for durability, heat resistance, and excellent performance across a variety of Big Twin models. Each set includes rings for two pistons and features a three-piece oil ring design along with reverse torsional taper face second rings for optimal function. **Specifications by Model:** - **Late 1200cc:** Hastings #6482, for 74" O.E.M. pistons. Standard bore: 3.438". Compatible with 1955-1980 Big Twin models. - **Early 1340cc Shovelhead:** Hastings #6127, for O.E.M. pistons. Standard bore: 3.498". Includes 3/16" oil rings and 1/16" compression rings. Fits 1978-Early 1983 FL and 1979-Early 1982 FX models. - **Late 1340cc Evolution:** Hastings #6164, for O.E.M. pistons. Standard bore: 3.4978". Includes 5/32" oil rings and 1/16" compression rings. Fits Late 1984-1999 Evolution Big Twin models. - **Twin Cam 88 1450cc:** Hastings #2M4942, for O.E.M. pistons. Bore size: 95.25mm (3.750"). Features 3.0mm oil rings and 1.5mm compression rings. Fits 1999-2006 Twin Cam models. - **Twin Cam 95 1550cc:** Hastings #2M4941, for O.E.M. pistons. Bore size: 98.43mm (3.875"). Features 2.5mm oil rings and 1.5mm compression rings. Fits 1999-2008 Twin Cam models. These rings offer long-lasting reliability and are tailored for specific engine configurations to ensure maximum compatibility and performance.