When it comes to increasing engine power, there is no substitute for more cubic inches.

• With efficient filling of the air/fuel mixture, the bigger the displacement, the more power your engine can produce
• In the past, the only way to increase the bore of your 96 or 103 cubic inch Twin Cam V-Twin motor was to tear down the motor and re-bore the engine cases to fit larger bore cylinder spigots
• It was a labor-intensive – and expensive – process
• Now, you can take your 96 or 103 cubic inch motor to a full 110 cubic inches without removing the engine from the chassis
• The Screamin’ Eagle team has engineered a 4" Big Bore Cylinder and Piston package that increase the internal bore from 3-7/8" to 4", without increasing the outside diameter of the cylinder spigot
• The cylinder slips into the existing case bore without modification
• This kit will add a whopping 7 cubic inches of displacement for more torque throughout the RPM range
• The kit includes front and rear cylinders, system-matched pistons with rings and breathers