S&S 3-7/16″ bore 9:1CR piston kit. Std 41-78 1200cc/74″ Knuckle, Pan, Shovel

S&S, 3-7/16″ bore 9:1CR piston kit. Std

Details

9:1 high (57cc dome) compression ratio. S&S forged pistons with an advanced alloy and skirt profiles, resulting in a quiet engine and long life, previously only achievable with cast pistons. Used as replacement, with a higher compression ratio, for 1200cc (74″) Shovel, Pan and Knucklehead models. 3-7/16″ bore with stock 3-31/32″ stroke. Pistons include wrist pins, wrist pin clips and piston rings. Note: S&S piston fit recommendations: Close fit .0030″ to .0035″, loose fit .004″ to .005″. 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.

Fitment

41-78 1200cc/74″ Knuckle, Pan, Shovel Code: Specifications

Part Numbers