Precision-made at leading OEM factories in Japan. Produced to exact OEM specifications for reliable performance and long service life.
Active filters
Precision main bearing made to OEM specifications for reliable performance.
Drop-in beehive valve springs that increase rpm capability and avoid rocker box clearance issues.
Forged performance replacement for stock hydraulic roller lifters. 100% tested and made in the U.S.A.
Includes rings for one piston only. Designed to fit only matching pistons.
Heavy-duty replacement seals for the Harley-Davidson TSM connector to maintain a watertight connection.
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.
Complete top-end piston rebuild kit with X-Ring package and hardware. Made in the USA.
ArmorX™-coated pistons with ArmorFit™ skirt coating for smooth, quiet operation. Includes pistons, rings, pins and circlips. Made in the U.S.A.
ArmorX™ coating for reduced wear and ArmorFit™ skirt coating for smooth, quiet operation. Includes pistons, rings, pins and circlips. Made in the USA.