Revolution Performance 124" Bolt On Big Bore Kit for '17-Up Harley Davidson 107 Touring Models - Black

Revolution Performance 124" Bolt On Big Bore Kit for '17-Up Harley Davidson 107 Touring Models - Black 

• Aerospace-grade all-aluminum cylinders with nickel-silicon-carbide (NSC) electroplated bores
• No sleeving allows for larger bore sizes
• NSC-plated cylinders have less friction for increased horsepower, lower engine temperatures and a longer lifespan
• True bolt-on kit that delivers major power durability and strength
• Includes pair of all-aluminum NSC-coated bore cylinders, custom-forged pistons with high-tension rings specifically designed for NSC cylinders and a head/base gasket set
• Replacement gasket sets available separately
• Made in the U.S.A.

NOTE: Upgraded cylinder studs and head bolts required (sold separately).

• BORE SIZE 4.250"
• DISPLACEMENT 124"
• STROKE LENGTH 4-3/8"
• COMPRESSION RATIO 11.2:1