Engine

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.
Precision-machined billet cap with improved heat transmission and performance styling.
Strong, lightweight billet aluminum point cover with CNC precision and improved heat transfer.
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.
Designed for twin plug heads. Accepts .650"/10mm x 1.0 compression release valves. Sold each.
Stepless® ear clamps deliver a 360° gap-free seal with a narrow 5 mm band. Specially formed edges reduce damage and tampering is visible. Lightweight design. Side jaw clamp tool sold separately.
Stepless® ear clamps designed for fuel systems. 360° stepless inner surface, narrow 5 mm band for concentrated seal compression, tamper-evident. Tool sold separately.
- Specially formed strip edges reduce risk of damage.
- Narrow 5 mm band for concentrated seal compression.
- 360° Stepless® design with no gaps on the inner surface.
- Tampering is visible; lightweight design.
360° Stepless® design for a continuous inner seal, narrow 5 mm band for concentrated compression, tamper-visible and lightweight.
Adjustable front stabilizer link for HD Touring frames with reverse-thread rod end and ARP stainless bolts; available in black anodized, gold anodized, or machined finish. Made in the USA.