S&S Cycle Tappet Roller Kit for 1929-1984 Harley-Davidson Big Twin and Ironhead Sportster

S&S Cycle Tappet Roller Kit for 1929-1984 Harley-Davidson Big Twin and Ironhead Sportster

Worn tappet rollers cause accelerated cam lobe wear and valvetrain noise on classic Big Twin and Ironhead Sportster engines. This kit restores smooth tappet operation by replacing the rollers and axles without requiring new tappet bodies. Precision rollers made from 52100 bearing material with 4340 chromoly axles deliver the durability your rebuilt valvetrain requires.

Key Features

• Four precision tappet rollers with bearings and four 4340 chromoly axles for a complete tappet rebuild
• Made from 52100 bearing material for long-term roller durability under cam lobe loads
• Restores tappet operation without replacing tappet bodies – cost-effective rebuild solution
• Fits 1929-1984 Big Twin and 1957-1985 Ironhead Sportster applications
• Made in the USA to S&S Cycle quality standards

Technical Specifications

• Application: 1929-1984 Harley-Davidson Big Twin (Side Valve and OHV); 1957-1985 Ironhead Sportster
• Contents: 4 tappet rollers with bearings, 4 tappet axles
• Roller material: 52100 bearing steel
• Axle material: 4340 chromoly
• Origin: Made in USA

Fitment Notes

• Fits 1929-1984 Harley-Davidson Big Twin (Side Valve and OHV) and 1957-1985 Ironhead Sportster
• Designed to rebuild existing tappet bodies – verify tappet body condition before installation
• Review the Fitment tab for complete year and model compatibility