Select type, year, make, and model
Upgrade your engine's performance with the HASTINGS Evolution Big Twin piston rings, designed specifically for 3.498-inch diameter pistons with a 0.005-inch gap. This comprehensive set includes top compression rings, second compression rings, and oil control rings, ensuring optimal sealing and efficiency in your motorcycle engine. The top compression rings feature a barrel face with a cast coating, which promotes effective heat transfer between the piston and cylinder wall, reducing thermal stress and maintaining consistent engine temperatures. These rings help control combustion gases, allowing the piston to transfer energy efficiently to the crankshaft for smooth power delivery. The second compression rings are reverse torsional taper face rings that enhance side sealing, preventing oil from leaking under and behind the ring, which results in improved oil economy and reduced oil consumption. Their reverse twist design, combined with a taper-machined face, mimics the scraping action of positive torsional rings, effectively removing excess oil from the cylinder walls. The oil control rings are three-piece flex vent types, engineered with a small cross-sectional profile to better conform to the bore surface. These rails, along with two steel expanders, provide uniform pressure, ensuring reliable oil control and reducing oil consumption. Made in the USA, this set offers durability and precision, with enough rings to service two pistons. The design incorporates two rings per groove for optimal sealing, with the rails and expander arranged for maximum performance. Perfect for Big Twin engines, the Hastings piston ring set is an ideal choice for restoring or enhancing engine efficiency and longevity.
Features:
US Dollars
