Moly Rings for Big Twins - L. 1200Cc Moly Rings .040

L. 1200Cc Moly Rings .040

• Size: +.040"
• UPC: 075538084310

**Moly Piston Rings for Big Twin Engines** Hastings moly-faced piston rings are engineered for durability and superior heat resistance, ensuring long-lasting performance. Designed to fit a variety of Big Twin engines, these rings include a reverse torsional taper face second ring and an easy "spiral-on" three-piece oil ring for optimal function. Each set is designed to service two pistons and is available in various specifications to match specific engine models. **Key Specifications:** - **Late 1200cc Engines**: Hastings #6482, standard bore 3.438". Fits 1955-1980 Big Twin models. - **Early 1340cc Shovelhead Engines**: Hastings #6127, standard bore 3.498". Features 3/16" oil rings and 1/16" compression rings. Fits 1978-Early 1983 FL and 1979-Early 1982 FX models. - **Late 1340cc Evolution Engines**: Hastings #6164, standard bore 3.4978". Features 5/32" oil rings and 1/16" compression rings. Fits Late 1984-1999 Evolution Big Twin models. - **Twin Cam 88 (1450cc) Engines**: Hastings #2M4942, bore 95.25mm (3.750"). Features 3.0mm oil rings and 1.5mm compression rings. Fits 1999-2006 Twin Cam models. - **Twin Cam 95 (1550cc) Engines**: Hastings #2M4941, bore 98.43mm (3.875"). Features 2.5mm oil rings and 1.5mm compression rings. Fits 1999-2008 Twin Cam models. These rings are built to deliver reliable sealing, reduced friction, and improved engine performance across a range of Big Twin motorcycles. Perfect for maintaining or restoring your engine to peak condition.