James Gasket

James® Gaskets has revolutionized sealing technologies in the motorcycle industry, focusing on Harley-Davidson® engines. James® Gaskets delivers the reliability and quality needed to maintain optimal performance in your motorcycle.

What James Gasket Makes

James Gasket builds sealing components for Harley-Davidson engines and drivetrains - head, base and top end gaskets, primary and derby gaskets, transmission and rocker box gaskets, exhaust gaskets, O-rings and oil seals, sold individually and as job-specific kits. What we list from James Gasket moves as the catalog moves.

Fitment

James Gasket fitment is specified part by part, and coverage is not uniform across platforms or model years. Check that the fitment list on the product page names your model and year before ordering.

Know Your Gearbox

Harley Big Twins ran a five-speed through 2006 and moved to the six-speed Cruise Drive for 2007 on Touring and Dyna; those two gearboxes share very little. The Sportster runs its own unit-construction transmission entirely. Clutch work has its own trap: a clutch that grips harder often needs stiffer springs, and stiffer springs mean a heavier lever pull unless the kit is designed around it.