Hastings Cast Piston Rings +.020″ Oversize Fits 1340cc Shovelhead

Description

The Hastings Cast Rings for Twin Power Pistons are designed for 1340cc engines with a .020″ oversize bore. These piston ring sets include durable cast iron compression rings and three-piece flex-vent oil rings. They are compatible with two pistons per set and fit various Big Twin engine models, including early 1340cc Shovelhead (78-E83 FL; 79-E82 FX) and late 1340cc Evolution engines (L84-99 Evolution Big Twin). The standard bore size is 3.498″, with 1/16″ compression rings and either 3/16″ or 5/32″ oil rings, depending on the application. Featuring a reverse torsional taper face second ring and easy-to-install spiral-on oil rings, these piston rings are engineered for optimal performance and reliability.