S&S, 3-7/16″ forged stroker piston kit. +.070″

Forged 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 pin clips and piston rings. Note: +.060″ 3-7/16″ bore of the 1200 engine is identical to the standard 3-1/2″ bore of the 1340cc engine. Note: In any and all applications the technician must be able to judge components for their suitability in combination with the other engine components prior to installation. It is of importance that a knowledgeable mechanic will install & make adjustments as required. The rider must follow standard break-in and riding procedures for overhauled engines.
41-84 B.T. with 84″ (4-1/2″ stroke) 86″ (4-5/8″ stroke) & 88″ (4-3/4″ stroke) engines (NU)
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