Fits 1984-2000 Evolution Big Twin Motorcycles with 4 5/8″ crankshaft.
– Aerospace-grade all-aluminum cylinder with Nickel-Silicon-Carbide (NSC) electroplated bore.
– No sleeving allows for larger bore sizes.
– NSC-plated cylinders have less friction for increased horsepower, lower engine temperatures and a longer lifespan.
– Monster big bore kits will require case boring. Additional upgraded services recommended.
– Includes pair of all-aluminum NSC-coated bore cylinders, custom-forged pistons with high-tension rings specifically designed for SNC cylinders and a head/base gasket set.
– Replacement gasket sets available separately – Upgraded cylinder studs and head bolts recommended.
– Made in the U.S.A.
Color/Finish: Natural
Bore Size: 3 7/8″
Displacement: 109″
Stroke Length: 4 5/8″
Compression Ratio: 10.5:1 with stock heads (86 cc)
Piston: -2.15 cc Flat-Top
