Description
Color/Finish: Black with Highlighted Fins
Bore Size: 3 9/16″
Displacement: 85″
Stroke Length: 4 1/4″
Compression Ratio: 9:1 with stock heads (86 cc) and 9.25:1 with Revolution Performance CNC head work (84 cc)
Piston: +3.7 cc Flat-Top
85″ Evolution Big Twin Bolt-On Big Bore Kit w/Flat-Top Pistons – Black Highlight
From: Revolution Performance
SKU: 201-212W
$1,479.95
Experience the easiest and most reliable way to boost your engine’s power and torque with Revolution Performance bolt-on big bore kits. No need for modifications, these kits are designed for effortless installation.
– Fits 1984-2000 Evolution Big Twin motorcycles.
– 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.
– 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.
Available on backorder
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