S&S Sidewinder 4″ Big Bore Kit 100″ for 1999-2006 Harley Twin Cam – Black

Inspired by Pro Stock Drag Race engines, these 4″ Big Bore kits from S&S Cycle delivery a serious punch of power in a bolt-on application. Black finish.

Fits: 1999-2006 Harley Twin Cam Models (Except ’99 Softail Models)

• Bolt in – no machining, balancing, or splitting the crankcases; install can be performed with engine still in frame
• Cast Ductile Iron Sleeve in cast aluminum for superior heat transfer
• 88″ engines are boosted to 100″
• 10.5:1 compression (w/ stock 85cc heads) makes for a very streetable and dependable engine that also responds well to performance cams
• Complete kits include cylinders, forged pistons, rings, piston pins, clips and gaskets

DISCLAIMER: NOT LEGAL FOR SALE OR USE IN CALIFORNIA ON ANY POLLUTION CONTROLLED MOTOR VEHICLES.

*Not compatible with S&S 79cc Super Stock® heads