S&S CYCLE M8 128" Big Bore Cylinder Kit

Features Convert your 114/117ci M8 to a 128ci monster The Big Bore kit yields excellent results with stock cylinder heads (not for Twin Cooled motors) unless noted Easy installation: no need to bore or split existing cases, just swap the cylinders (unless noted) Cylinders are constructed from premium aluminum castings with cast-in iron liners Kits include cylinders, pistons, rings and gaskets (head, base and exhaust) Black or silver powder-coat finish Made in the U.S.A. This project requires a skilled technician. It is the responsibility of the person assembling the parts to check all clearances and assembly specifications. Specs Product Name: Cylinder Kit Style: Big Bore Base Color: Black Material: Iron Bore Size: 4.250" Displacement: 128" Stroke Length: 4-1/2" Compression Ratio: 11:1 / 11.0:1 Units: Kit Riding Style: Street