S&S, SuperStock exhaust valve, 1.575" diameter - 99-17 Twin Cam with S&S 79cc SuperStock heads; 84-99 Evo B.T. with S&S 76cc and 82cc SuperStock heads with flat top pistons (NU) Clutch lever assemblies repl parts Note: See 583913 for sound

Note: See 583913 for sound adjustable DB killer

Three layer technology consists of synthetic rubber adhesive

Upgrades not only performance

12 Series Shocks

One-piece molded foam foundation on a powder-coated steel base that is carpeted

S&S, SuperStock exhaust valve, 1.575" diameter - 99-17 Twin Cam with S&S 79cc SuperStock heads; 84-99 Evo B.T. with S&S 76cc and 82cc SuperStock heads with flat top pistons (NU) Clutch lever assemblies repl parts Note: See 583913 for soundReplacement for S&S Twin Cam 531829 531830 531833 531834 79cc SuperStock heads and for S&S Evo B. T. 76cc & 82cc 512522 512523 531904 531905 531906 SuperStock heads.