Hastings Moly Piston Rings Std Size Fits 1340cc Big Twin Engines

• Size: Std
• Type: Piston Ring Set
• UPC: 075538114130

**Moly Piston Rings for Big Twin Engines** High-performance moly-faced piston rings designed for durability and enhanced heat resistance. These rings are compatible with a range of Big Twin engine models and are built to ensure reliable performance. They feature reverse torsional taper face second rings and three-piece oil rings for ease of installation. ### Compatibility and Specifications: - **Late 1200cc (55-80 Big Twin):** Standard bore of 3.438". Hastings #6482 for 74" OEM pistons. - **Early 1340cc Shovelhead (78-E83 FL; 79-E82 FX):** Standard bore of 3.498". Hastings #6127 with 3/16" oil rings and 1/16" compression rings. - **Late 1340cc Evolution (L84-99 Evolution Big Twin):** Standard bore of 3.4978". Hastings #6164 with 5/32" oil rings and 1/16" compression rings. - **Twin Cam 88 1450cc (99-06 Twin Cam):** Bore of 95.25mm (3.750"). Hastings #2M4942 with 3.0mm oil rings and 1.5mm compression rings. - **Twin Cam 95 1550cc (99-08 Twin Cam):** Bore of 98.43mm (3.875"). Hastings #2M4941 with 2.5mm oil rings and 1.5mm compression rings. ### Key Features: - Designed for two pistons per set. - Long-lasting and resistant to high temperatures. - Precision-engineered for OEM piston compatibility. These piston rings are ideal for maintaining or upgrading your Big Twin engine, ensuring optimal performance and longevity.