110" Sidewinder Big Bore Kit for 2007-'17 HD® Big Twin Models - Silver SUPER BRIGHT HALO RINGS Dual Piston Seals for leak

Dual Piston Seals for leak proof operation

Machined with the S&S® 4" cylinder stud pattern

All of these parts are pre-drilled

Each “Yaxle” kit includes our precision CNC machined stainless steel replacement axle that is designed to accept any of our custom “Yaxle” end caps: Smooth / Domino / Speed Freak or Yafterburner… The choice is yours

This fender uses Bad Dad's Summit Fender as a base and then features a pair of completely flush mounted LED taillights

110" Sidewinder Big Bore Kit for 2007-'17 HD® Big Twin Models - Silver SUPER BRIGHT HALO RINGS Dual Piston Seals for leakInspired by our Pro Stock Drag Race engines, these updated big bore kit utilizes a Ductile Cast Iron liner wrapped in cast aluminum for optimum thermal conductivity and performance. Bolt in kits do not require machining, rebalancing or engine removal, and include just about everything youll need to complete the installation. The biggest cylinder bore that can be installed in a stock crankcase without machining! Features & Benefits Low friction Ductile