Designed for riders who demand absolute control under extreme conditions, this conversion delivers a major upgrade in downshifting stability, clutch feel, and engine-braking control - while significantly reducing rotating mass and drivetrain stress.
Globally respected in professional racing, STM brings its proven dry slipper clutch technology to the Harley-Davidson Milwaukee-Eight platform with the KTT-3500 conversion. By eliminating the inherent compromises of a wet clutch and replacing it with a lightweight dry slipper design, riders gain smoother deceleration, faster and more precise shifts, and consistent performance under hard braking and high load.
Whether built for aggressive street riding, competitive bagger racing, or high-performance custom applications, this STM conversion kit provides a decisive improvement in clutch performance, durability, and rider confidence.
FEATURES
- Converts the factory wet clutch system to a lightweight dry slipper clutch
- Slipper function reduces rear-wheel hop during aggressive downshifting
- Improves shift precision, clutch engagement, and engine-brake control
- Reduced rotating mass enhances throttle response and overall performance
- Helps extend engine and drivetrain component life under high-load conditions
- Precision-machined from high-strength, lightweight aluminum
- Exceptional Italian craftsmanship and race-proven design
- Compatible with all Harley-Davidson Milwaukee-Eight models
KIT INCLUDES
- CNC-machined engine cover conversion components
- Complete STM dry slipper clutch assembly
- STM-manufactured 48-tooth (Z48) clutch basket with matched clutch plate set
- STM Slipper Clutch Tool - Ensures correct clutch spring torque during installation (Compatible with 121mm and 125mm spring configurations)
- Click here to view Installation instructions & Fitment Guide
CUSTOM COLORS
- Custom-colored kits available
- Call for custom color options
- Custom color configuration shown on the 2024 EICMA Bagger
