Revolution Performance 131″ Twin Cam Monster Big Bore Kit – Black with Highlighted Fins

Product type: Big Bore Kits

SKU : 201-129W

Regular price $1,599.95 USD

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Fits 1999-2017 Twin Cam motorcycles with 4 5/8 stroke and 7.669″ rods – Aerospace-grade all-aluminum cylinder with Nickel-Silicon-Carbide (NSC) electroplated bore –...

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Fits 1999-2017 Twin Cam motorcycles with 4 5/8 stroke and 7.669″ rods – 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: Black with Highlighted Fins Bore Size: 4.250″ Displacement: 131″ Stroke Length: 4 5/8″ Compression Ratio: 11.2:1 with stock heads (86 cc) and 10.6:1 with Revolution Performance Stage 3 CNC head work (95 cc)