S&S, 3-7/16" forged stroker piston kit. +.060" - 41-84 B.T. with 84" (4-1/2" stroke), 86" (4-5/8" stroke) & 88" (4-3/4" stroke) engines (NU) 597589 Levers for all other applications

Levers for all other applications are strong

The grooved end of tool is placed over the spark plug wire of running engine

This is the so-called '-' belt

Matching derby cover

S&S, 3-7/16" forged stroker piston kit. +.060" - 41-84 B.T. with 84" (4-1/2" stroke), 86" (4-5/8" stroke) & 88" (4-3/4" stroke) engines (NU) 597589 Levers for all other applicationsForged piston set. For 41 78 1200cc (74") Knuckle, Panhead, Shovel and 1340cc Shovel. Fits engines with stroker flywheels and stock 3 7 16" (1200cc) or 3 1 2" (1340cc) cylinders with stock 5. 330" length. Compression will be approx 8. 4: 1 with 4 1 2" stroke, 9. 4: 1 with 4 5 8 stroke and 10. 8 with 4 3 4" stroke. Piston dome volume 50cc. The advanced alloy and piston skirt profile for low noise and long engine life. Pistons include wrist pins, wrist