S&S 4″ Sidewinder Big Bore Kit for 99-17 Big Twin Models

$1,145.00

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Description

S&S 4″ Sidewinder Big Bore Kit for 99-17 Big Twin 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″
  • 96″ and 103″ engines are boosted to 110″
  • 10.5:1 compression (w/ stock 85cc heads) makes for a very streetable and dependable engine that also responds well to performance cams
  • Available with wrinkle black or silver powdercoat finish cylinders

Complete kits include:

  • cylinders
  • forged pistons
  • rings
  • piston pins
  • clips
  • gaskets

NOTE: Not for use with S&S 79cc heads.

Additional information

Weight 13.5 lbs
Dimensions 12 × 16 × 10 in
Year

1999-2006, 2007-2017

Finish

Wrinkle Black, Silver

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