Engine

Active filters
Complete two-piston kit with precision-fit rings and enhanced pin oiling for dependable sealing and long life.
Forged, precision-fit piston kit with ArmorGlide® skirt coating and force-fed pin oiling. Value-pack includes two pistons, rings, pins, and circlips.
Forged aluminum piston kit with ArmorGlide® skirt coating; includes two pistons, rings, piston pins and circlips for a complete install.
Forged aluminum piston kit with ArmorGlide® skirt coating; includes two pistons, rings, piston pins and circlips.
Directs air through a side scoop to cool cylinder heads; includes a high-powered waterproof fan, temperature switch (activates at 140°F), manual override, wiring and hardware. Plug-and-play installation with no drilling. Not for "Twin Cooled" models.
Designed for twin plug heads. Accepts .650"/10mm x 1.0 compression release valves. Sold each.
Quality pinion shaft bushing manufactured in the U.S.A. Precision fit for reliable performance.
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.