S&S CYCLE Big Bore Cylinder Kit — Bore 3.927", Displacement 106" – 12-17 Dyna, 07-15 CVO, 10-16 Trike, 10-11 Touring, 07-17 Softail

This complete kit yields excellent results with stock cylinder heads and is engineered for straightforward installation without boring or splitting existing cases; simply swap the cylinders unless otherwise noted.

The package includes pistons, rings and gaskets for head, base and exhaust, and is manufactured in the USA.

This project requires a skilled technician; the assembler is responsible for verifying clearances and assembly specifications before operation.

Designed to fit Twin Cooled motors and intended for use by experienced builders and shops.