S&S 4.125″ Standard Compression Big Bore Black Cylinder & Piston Kit (910-0338)

Description

• Big Bore kit yields excellent results with stock cylinder heads
• The cylinders are machined with the stock bolt pattern and are intended for use in stock crankcases of 2007-’16 big twin engines
• This kit must be used with 4-5/8″ flywheels resulting in 124′ displacement
• Easy installation no need to bore or split existing cases, just swap the cylinders (unless otherwise noted)
• Cylinders are constructed from premium aluminum castings with cast-in iron liners
• For 124″ twin cam motors
• Kit includes cylinders, pistons, rings and gaskets (head, base and exhaust)
• For best performance, appropriate camshafts, performance air cleaner, performance exhaust and fuel system tuning are required
• Crankcases must be bored to accept the larger 4-1/8″ bore cylinders
• Made in the U.S.A
• Project requires a skilled technician. It is the responsibility of the person assembling the parts to check all clearances and assembly specifications