S&S Cycle Cylinder Stud & Head Bolt Kit - '17-'23 M8 Models 900-1176

S&S Cycle Cylinder Stud Kit - '17-'23 M8 Models 310-1204

Cold-formed 9/16" 12-point head with integral washerStronger material than stock Head bolts200,000 psi ultimate tensile strengthReusable

Extends the life of cylinder headsHelps prevent damage to the rocker arm towersRe-torque rocker arm nuts after installation

High port flow gives great performance now, and more later when additional upgrades are doneHeads are fully assembled with springs and valvesCompression ratios vary depending on cylinder heads...

Unique S&S design dual-spring kit reduces the risk of valve floatFor valve lift to .585" with 1.800"/130 lb. installed height, 325 lb. at max liftIncludes springs, top and bottom collars, keeper...