Precision roller assembly with larger outer rollers, smaller pin bearings for higher rpm, and an enlarged axle that eliminates internal movement. Made in the U.S.A.
Active filters
High-precision hydraulic tappets with micro-finish bore and oversized axle for improved cam tracking.
Performs like hydraulic to 5,500 rpm then becomes solid, adding ~3–6 hp and preventing hydraulic pump-up. Made in the U.S.A.; requires adjustable pushrods.
- Fits cast iron and aluminum valve-lifter blocks
- Billet bearing metal construction
- Hand fit hydraulic unit, .0002" running fit
- Recommended block clearance .0007"–.0012"
Reduce starting compression with easy-install manual release valves. Drill and tap each cylinder head 10 mm x 1.0 mm. Fits all Big Twin models.
Replacement component for Big Twin models; precision-machined to restore lubrication performance and reduce noise.
High-strength pinion shaft nut designed for secure gear-side installation and long service life.
Precision-made valve lock keys with a 10° lock angle. Heat-treated and made in the U.S.A. Designed for reliable valve keeper service.
High-lift valve springs providing correct spring force for performance cams in 74" and 80" motors. Max lift; requires proper valvetrain setup. Made in the United States.
Complete top-end piston kit includes pistons, rings, retainer clips, chrome piston pins and an X-Ring package for reliable sealing. Pistons made in the USA.
Complete top-end kit with forged aluminum pistons, X-Ring package, rings, retainer clips and chrome piston pins for reliable performance.
Complete top-end piston kit with X-Ring package and all necessary installation hardware.
Includes rings for one piston only; fits only matching pistons from the same manufacturer.
Converts '99-'06 Twin Cam engines (except '06 Dyna Glide) to roller-style cam chains and hydraulic adjusters. Requires additional '07-'17 components; a list is included. Made in the USA.
Computer-designed, heat-treated alloy-steel cams. Four-gear set required for installation; installer must verify coil bind and valve clearances.
- Computer-assisted cam design for precise timing
- Alloy steel billet construction with heat treatment
- Made in the USA
- Four-gear set required; installer must verify clearances
Computer-aided cam design; alloy steel billet construction with heat treatment. Made in the USA. Requires four-gear set; installer must verify clearances prior to final assembly.