S&S Cycle Manifold Conversion Kit for 1986-2003 Harley-Davidson Sportster
The stock rubber manifold on a Harley-Davidson Sportster flexes at high RPM and develops cracks over time, causing intake leaks that rob performance. This S&S Cycle manifold conversion kit replaces it with a rigid precision-machined aluminum manifold, including all flanges, O-rings, and spacers for a complete installation that eliminates intake flex and sealing problems.
Key Features
- Replaces stock rubber compliance manifold on 1986-2003 Sportster XL models
- Rigid precision-machined aluminum construction eliminates flex and intake leaks
- Machined with 1-7/8-inch throat for compatibility with a wide range of carburetors
- Fits stock Keihin butterfly carbs and S&S Super B and Super E carburetors
- Includes front and rear mounting flanges, manifold O-rings, and aluminum spacer shims
- Fits models with stock 4.650-inch cylinder length
Technical Specifications
- Manifold Material: Precision-machined aluminum
- Throat Diameter: 1-7/8 inches
- Compatible Cylinders: Stock 4.650-inch length
- Compatible Carburetors: Stock Keihin butterfly, S&S Super B, Super E, Tillotson, Bendix
- Includes: Manifold, front and rear flanges, O-rings, and aluminum spacer shims
- Country of Origin: USA
Fitment Notes
- Fits 1986-2003 Harley-Davidson Sportster XL models with stock 4.650-inch cylinder length
- Not for use on Sportster models with non-stock cylinder lengths
- Compatible with stock Keihin butterfly carburetors and S&S Super B and Super E carburetors
- Not compatible with S&S G series carburetors
- S&S-style O-rings must be used – S&S O-rings are slightly thinner than OEM to accommodate the larger port diameter
- Review the Fitment tab for complete year and model breakdown





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