S&S Cycle Thread Reducer 1/2-13 to 5/16-18 for S&S Carburetor Installations
Thread size differences between engine cases and carburetor support hardware can prevent proper bracket installation in specific S&S motor configurations. This S&S Cycle thread reducer is a machined insert that converts the motor case thread to the size required for S&S carb support bracket bolts, enabling a secure installation without case modification. Two reducers are required per motor.
Key Features
- Converts 1/2-13 motor case threads to 5/16-18 for S&S carb support bracket installation
- Required on 1992 motors for carb support brackets using 5/16-18 bolts
- Can also be used on 1993-1999 Big Twin motors if the breather is moved back to the crankcase
- Two reducers required per motor for complete installation
- Replaces OEM part number 29304-92
- Made in the USA by S&S Cycle
Technical Specifications
- Conversion: 1/2-13 female to 5/16-18 female thread insert
- Quantity Required: 2 per motor
- OEM Replacement: 29304-92
- Application: S&S carburetor support bracket installations on 1992+ Big Twin motors
- Country of Origin: USA
Fitment Notes
- Required on 1992 Big Twin motors to install S&S carb support brackets using 5/16-18 bolts
- Can be used on 1993-1999 Big Twin motors if the breather is relocated to the crankcase as on older models
- Two reducers are required per motor for a complete installation
- Replaces OEM part number 29304-92
- Review the Fitment tab for complete motor compatibility





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