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.

Used with or to built a 96" (4-5/8" stroke; 5.565" cyl. length) engine with 3-5/8" big bore cylinders and stock cylinder heads. Compatible with stock length manifold. Approx. 10.1:1 CR. Kits include forged pistons; wrist pins; wrist pin clips and piston rings. 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.

Used with 3-5/8 big bore cylinders in combination with 4-1/4" (88"); 4-1/2" (93") or 4-3/4" (98") stroke with 5.375" (88"); 5.500" (93") or 5.750" (98") long cylinders and stock heads. Kits include forged pistons; wrist pins; wrist pin clips and piston rings. Note: 98" engines must use small 8-1/4" o flywheels. 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.

Used with 3-5/8 big bore cylinders in combination with 4-1/4" (88"); 4-1/2" (93") or 4-3/4" (98") stroke with 5.375" (88"); 5.500" (93") or 5.750" (98") long cylinders and stock heads. Kits include forged pistons; wrist pins; wrist pin clips and piston rings. Note: 98" engines must use small 8-1/4" o flywheels. 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.

Replacement pistons for 4-1/8" bore SSW+ (Super Sidewinder Plus) type S&S engines in either Evo or Twin Cam version. Pistons include wrist pins; wrist pin clips and piston rings. 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.