Advance unit assembly, steel - 70-99 Big Twin (excl. Twin Cam); 71-03 Sportster. Models equipped with points and electronic ignitions that use mechanical advance 962008 Hassle-free installation with high-strength 3M

Hassle-free installation with high-strength 3M self-adhesive

cam bearings and retaining ring can be ordered separately as S&S 503593

The ultra-light but very strong outer shell of the helmet is made of in Tri-composite blend

Used to lock cam gears and pinion gears for removal and torquing to correct specs upon installation

Standard style

Advance unit assembly, steel - 70-99 Big Twin (excl. Twin Cam); 71-03 Sportster. Models equipped with points and electronic ignitions that use mechanical advance 962008 Hassle-free installation with high-strength 3MComplete with breaker weights (32522 70), springs (32605 70) and circuit breaker cam (32542 70). Repl. 32517 70