S&S Cycle Heavy Duty Clutch Diaphragm Spring Fits Harley-Davidson Big Twin 1998-2017
A heavy-duty clutch diaphragm spring that delivers 380 pounds of clutch clamping force – 25 percent stronger than stock – for confident engagement and slip-free power transfer on 1998-2016 Harley-Davidson Big Twin models.
Key Features
- Heavy-duty clutch diaphragm spring sized for the standard Big Twin diaphragm clutch
- 380 pounds of clamping force – 25 percent stronger than stock per S&S
- Slip-free power transfer for stock and elevated power output
Technical Specifications
- Clamping Force: 380 lbs (25 percent over stock)
- Application: Big Twin standard diaphragm clutch
- Unit of Measure: Each
Fitment Notes
- Compatible with Harley-Davidson 1998-2016 Big Twin chassis fitted with the standard diaphragm clutch.
- Excludes 2014-2017 Big Twin chassis equipped with the A&S (Assist and Slipper) clutch, and excludes 2017 Milwaukee-Eight platforms.
- Refer to the Fitment tab for the platform breakdown.
- Not affiliated with or endorsed by Harley-Davidson.




