S&S HIGH PERF. TAPPET ASSY SET 1984-99

With special rollers and hydraulics. S&S tested up to 7800 RPM, without pump-up. Inner bearing race has an increased outside diameter so more and larger needle bearings could be used. Tappets are hand-fitted and pressure tested. Used in all S&S Evo type engines, but will also fit stock 84-99 Evo Big Twin (excl. Twin Cam) and 86-90 XL models. These lifters are compatible with virtually any engine application.