S&S 555 cams for 1991-'15 HD® Sportster® models. Recommended for 89"-100" engines with 9.5:1 to 11.5:1 compression ratio. Provides best performance from 3500-6500 rpm using ported stock heads or S&S heads. Requires adjustable pushrods, spring spacing or high lift valve springs, and normal clearance checks.
1991-’99 style pinion gear must be used with S&S® cams in 2000-’15 Sportster®
models and 2000-'02 Buell® models with stock flywheels. See page 4-16.
2000-'03 Sportster models and 2000-'02 Buell models using S&S flywheels or
pinion shafts require the use of '91-'99 style cams and S&S '86-'87 pinion gear
and oil pump drive gear.
Not legal for sale or use on CA or EPA pollution controlled motorcycles.