S&S Cycle 100ci Power Package for 1999-2006 Harley-Davidson Twin Cam 88
Transform your early Twin Cam into a 100-cubic-inch performer without splitting the engine cases. This complete S&S Cycle kit delivers a precision big-bore upgrade paired with factory-matched cams and an upgraded oiling system, producing stronger torque and improved throttle response that makes every ride feel purposeful and confident.
Key Features
- Bolt-on displacement upgrade to 100ci with no crankcase machining required
- S&S 585 Easy Start cams with TC3 cam support plate for precise cam timing retention
- TC3 oil pump ensures consistent oil pressure and lubrication under increased load
- S&S Quickee pushrods and premium hydraulic tappets included
- Choose chain drive with hydraulic tensioners or gear drive cams
- Cylinders fitted to pistons at the factory – no additional machining required
- Compatible with stock cylinder heads
- Made in the USA
Technical Specifications
- Displacement Increase: 88ci to 100ci
- Bore: 4″
- Pistons: 10.5:1 compression
- Cams: S&S 585 Easy Start (chain or gear drive)
- Cam Support: TC3 cam support plate
- Oil Pump: TC3
- Cam Lift: .585″ intake and exhaust
- Duration @ .053″: 245 degrees intake / 260 degrees exhaust
- Origin: Made in the USA
Fitment Notes
- Fits 1999-2006 Harley-Davidson Twin Cam 88 engines in Dyna, Softail, and Touring
- NOT compatible with 2006 Dyna models
- NOT for use with S&S 79cc heads
- 1999-2004 Twin Cam applications require additional purchase of valve spring kit #900-0593
- Gear drive cams require pinion shaft runout less than .003″
- Compatible with stock cylinder heads
- Review the Fitment tab for complete year and model breakdown
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