4" Sidewinder Big Bore Kit for 1999-'06 HD<sup>®</sup> Big Twin Models - Silver

4" Sidewinder Big Bore Kit for 1999-'06 HD® Big Twin Models - Silver

Item #: 910-0596
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$1,099.95
PowerTerms

These bolt-in kits don’t require any 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

  • Bolts in. No machining, balancing, or splitting the crankcases
  • 88" engines are boosted to 100"
  • Complete kits include cylinders, pistons, gaskets, and instructions
  • Silver powder coat cylinders – matches stock finish
Stroke Bore Cylinder Length Piston Type Dome Volume 79cc S&S Heads 83cc CNC Heads 85cc Stock Heads 89cc S&S Heads
4    4.00" 4.937" Forged 8.75 pop up 11.3:1 10.8:1 10.5:1 10.1:1

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Disclaimer

NOT LEGAL FOR SALE OR USE IN CALIFORNIA ON ANY POLLUTION CONTROLLED MOTOR VEHICLE. Not legal for sale or use on any EPA pollution