S&S Cycle 4 in. Sidewinder Big Bore Kits

Inspired by S&S Pro Stock drag race engines, S&S Cycle 4 in. Sidewinder big bore kits utilize a ductile cast iron liner wrapped in cast aluminum for optimum thermal conductivity and performance. These bolt-in kits do not require machining, re-balancing, or engine removal, and include just about everything you'll need to complete the installation. S&S Cycle 4 in. Sidewinder kits offer the biggest cylinder bore that can be installed in a stock crankcase without machining!

Features:

* Low-friction ductile cast iron liner
* 10.5:1 compression
* Bolts in with no machining, balancing, or splitting the crankcases
* 88 in. engines are boosted to 100 in.
* 96 in. and 103 in. engines are boosted to 110 in.
* Complete kits include cylinders, pistons, gaskets, and instructions
* Wrinkle black and silver cylinders that match stock finish Show Less