100" Sidewinder Big Bore Kit for 1999-'06 HD® Big Twin Models - Wrinkle Black
100" Sidewinder Big Bore Kit for 1999-'06 HD® Big Twin Models - Wrinkle Black
  • Load image into Gallery viewer, 100" Sidewinder Big Bore Kit for 1999-'06 HD® Big Twin Models - Wrinkle Black
  • Load image into Gallery viewer, 100" Sidewinder Big Bore Kit for 1999-'06 HD® Big Twin Models - Wrinkle Black

100" Sidewinder Big Bore Kit for 1999-'06 HD® Big Twin Models - Wrinkle Black

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$1,985.53
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$1,985.53
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Inspired 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 you’ll need to complete the installation. The biggest cylinder bore that can be installed in a stock crankcase without machining!

Features & Benefits

  • Low friction Ductile Cast Iron liner
  • 10.5:1 Compression
  • Bolts in. No machining, balancing, or splitting the crankcases
  • 88" engines are boosted to 100"
  • Complete kits include cylinders, pistons, gaskets, and instructions
  • Wrinkle black cylinders – matches stock finish
  • Although not mandatory, we recommend adding an oil cooler to bikes ridden in warmer climates
Stroke Bore Cylinder Length Piston Type Dome Volume 83cc CNC Heads 85cc Stock Heads 89cc S&S Heads
4 4.00" 4.937" Forged 8.75 pop up 10.8:1 10.5:1 10.1:1

 

*Not compatible with S&S 79cc Super Stock® heads. Not recommended for Tri-Glide or other three wheel models due to lugging nature of these bikes.

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