S&S Cycle 320-0459 106 Cubic Inch Stroker Flywheel Kit for Twin Cam 88

The S&S Cycle 320-0459 is a 106 cubic inch stock bore stroker kit designed to increase displacement in Harley-Davidson Twin Cam 88 engines. This economical engine upgrade features a three-piece assembled flywheel with a 4.5-inch stroke that delivers reliable power without requiring any motor case modification.

Key Features:

• 4.5-inch stroke flywheel assembly increases displacement from 88ci to 106ci
• Stock bore design - no case boring or special machining required beyond piston fitting
• Compatible with 1999-2006 Harley-Davidson Big Twin models with Twin Cam "A" motors (except 2006 Dyna)
• Stock 88-inch cylinders can be bored from 3.75-inch to 3.875-inch bore to accommodate S&S stroker pistons
• Engines with factory 95-inch kits require piston fitting only
• Works with stock or S&S cylinder heads
• Maintains stock engine height when using stock cylinders
• For pre-2003 crankcases with Timken right main bearings or upgraded bearing kits
• Made in the USA

Important Notes:

• S&S stroker pistons sold separately and available in all standard oversizes
• Fuel-injected engines will require recalibration of the fuel injection system
• Professional installation by a skilled technician required

This "baby stroker" kit offers a perfect balance between the conservative big bore 95-inch upgrade and the more radical 124-inch stroker, providing over 100 cubic inches of reliable performance for your Twin Cam 88 powered machine.