Jims Compression Release Guide - Twin Cam 1169

Give your starter a hand by installing these in your high-compression, big-inch motorSimply drill and tap (10 mm x 1.0 mm) each cylinder head and thread in the self-sealing release valvesMade in the...

Perform like a hydraulic tappet up to 5500 rpm, then turn into a solid tappetWhen they turn into solid tappets, it adds approximately three to six more usable horsepowerPrevent hydraulic pump at high...

Make working on motors easier with better accessMade in the U.S.A.