models with A&S clutch)

All Black Diamond valves are one-piece Stainless Steel forgings with a black nitrided finish

17-24 M8 (Excl

79-99 Big Twin (Excl

Thunderslide Kit TC 2000-06 Laddning models with A&S clutch)Fitments 00 06 Dyna, 00 06 Softail, 00 06 Touring Note: Only for Carbureted Models Description Designed for 80+ horsepower engines and include a taller carburetor top for more slide movement. Made to optimize jetting for a given tuning specification or racing conditions. Unique set of lift holes moderate how the slide moves with respect to throttle position; the faster the slide opens the quicker the throttle response. Kits include Thunderslide, jets,