HASTINGS Replacement Piston Rings — 3.875 in bore, +0.005 in oversize – 99-06 Touring, 00-06 Softail, 99-06 Dyna

Replacement piston rings kit includes top compression rings, second compression rings, and three-piece oil control rings, engineered to control combustion chamber gases and support heat transfer between the piston and cylinder wall. 🔧

Top compression rings feature a barrel face, while second compression rings use a reverse torsional taper face to promote side sealing and improve oil economy.

Oil control rings use a three-piece flex vent design with two rails and expanders to provide uniform pressure and positive oil control.

The reverse twist ring with a taper-machined ring face duplicates the OD bottom-side scraping edge of a positive twist torsional ring, enhancing scraping performance.

Includes enough rings for two pistons unless noted, with two rings per groove except for the rails that use two rail rings per one expander.

Please read the instructions furnished with the piston for correct ring installation and pay special attention to top ring end gap requirements. Made in the USA. 🇺🇸