S&S, forged 3-5/8" big bore piston kit. +.060" - 36-84 88", 93", 93"HC, 96", 98" and 103" B.T. with appropriate cylinders and flywheel stroke (NU) 960179 with machined-in slots

with machined-in slots

When installing stroker flywheels in a stock crankcase it can be necessary to grind material from the case to make enough clearance for the crankpin nuts

Quick installation

5/16" and 3/8" bolts longer than 1" are not included

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S&S, forged 3-5/8" big bore piston kit. +.060" - 36-84 88", 93", 93"HC, 96", 98" and 103" B.T. with appropriate cylinders and flywheel stroke (NU) 960179 with machined-in slotsFits all 3 5 8" big bore 36 84 B. T. models with 4 1 4" to 5" stroke flywheels with the correct flywheel diameter of 8 1 2. Note that 4 3 4" & 5" strokes require 8 1 4 small diameter flywheels, all in combination with the appropriate cylinder length like mentioned below. Advanced alloy and piston skirt profile is used for low noise and long engine life. Piston dome volume 30cc, piston deck height 1. 260". 88" (4 1 4" stroke, 8 1 2" flywheel dia., 8.