Internal Parts

Active filters
Includes top and second compression rings plus three-piece oil control rings; supplies enough rings for two pistons for reliable sealing and oil control.
Complete replacement ring set with top and second compression rings plus three-piece oil control rings. Restores compression, controls oil, and improves oil economy. Includes enough rings for two pistons. Made in the USA.
Complete set of top, second, and three-piece oil control rings for two pistons. Barrel face top rings and Napier second rings provide improved sealing and heat transfer; three-piece Flex Vent oil rings ensure positive oil control. Made in the USA.
Complete replacement piston ring set with PVD coating: barrel face top rings, Napier second rings, and three‑piece flex vent oil control rings. Includes enough rings for two pistons.
Direct-fit piston pin clips for many Harley models. Made in the USA and built to OEM-equivalent standards.
The High Flow Camplate increases oil flow and cooling, is pressure tested with a 55-60 psi relief setting, includes bearing and retainer plate hardware, and is for use with Feuling® oil pumps only.
Replacement dowel pins for precise alignment and secure assembly.
- Precision press-on races for true outer diameter after installation.
- Includes right and left crankshaft races and left-side thrust washers.
- Made in the USA.
Press-on undersize crankshaft bearing races for right and left sides, includes left-side thrust washers; enables repair and remachining after race spinning. Made in USA.
Precision rod races made in the U.S.A. for reliable seating and reduced wear.