The cylinders in this kit increase your cylinder bore size from the stock diameter of 4.016" to 4.250". Increasing your engine's size to 128ci which, can produce 20% gain in performance with a proper tune. Combined with a the proper Cam, Exhaust, Intake, and Tune, this kit will turn your bike into an absolute beast. 114" to 128" Bolt-On Big Bore Piston & Cylinder Kit comes with.CP Carrillo 11:1 compression ratio 4.250 piston kit with coated skirts and X Forging (The Best). Cometic head and base gasket kit. NOTE: The compression ratio is based off of stock cylinder head combustion chamber volume.
The item "Harley-Davidson M8 114 to 128 Bolt-On Big Bore Kit for Softail & Touring" is in sale since Saturday, April 13, 2019. This item is in the category "eBay Motors\Parts & Accessories\Motorcycle Parts\Engines & Engine Parts\Big Bore & Top End Kits". The seller is "stfuscott" and is located in Lafayette, Louisiana. This item can be shipped worldwide.