Shop › Shock Boss, Unthreaded 12mm, 1 3/4" Long Image 1 of 1 Shock Boss, Unthreaded 12mm, 1 3/4" Long $4.95 For fabricating shock mounts. Comes in 1/2" or 12mm x 1.5 bolt sizes. Threaded or unthreaded. Add To Cart Added! For fabricating shock mounts. Comes in 1/2" or 12mm x 1.5 bolt sizes. Threaded or unthreaded. C-217-2713-0 You Might Also Like EMPI Cam .478/279D $85.95 Seat Cover, Black with Square Pattern, Each $80.95 EMPI Billet Throttle Pedal with Ball Milled Grooves & EMPI Logo $72.95 Engine Trim Kit, Blue $62.95 Fuel Filter Kit, with Hose & Clamp, Fits 1/4", 5/16" and 3/8" fittings $17.95