STM Dry Clutch Conversion Kits for Harley-Davidson Motorcycles

Transform your Harley-Davidson with an STM Dry Clutch Conversion Kit, bringing STM’s race-developed slipper clutch technology to the Harley-Davidson V-Twin platform.

Our range of STM dry clutch conversions for Harley-Davidson motorcycles is designed for compatible Grand American Touring, Cruiser and Trike models, including applications such as the Harley-Davidson Road Glide and other compatible Milwaukee-Eight motorcycles.

Harley-Davidson Dry Clutch Conversion

The STM conversion replaces the standard wet clutch arrangement with a complete dry slipper clutch system, combining distinctive dry clutch character with genuine performance engineering.

The Harley-Davidson STM conversion features the Evoluzione SBK slipper clutch, a Z48 clutch basket and matched clutch plate set, together with the CNC-machined components required for the conversion.

An STM Harley-Davidson dry clutch conversion is ideal for riders looking for:

• Complete wet-to-dry clutch conversion

• STM Evoluzione SBK slipper clutch technology

• Z48 clutch basket and matched plate set

• Improved control during aggressive downshifts

• Reduced rear-wheel hop under engine braking

• Precision CNC-machined components

• Distinctive dry clutch sound and appearance

• Premium upgrade for performance and custom Harley-Davidson builds

STM Dry Clutch for Harley-Davidson Touring, Cruiser & Trike Models

STM has developed the KTT-3500 conversion specifically around Harley-Davidson’s large-capacity performance platform, making it particularly suited to high-spec Touring, Cruiser and Trike builds where clutch performance is being upgraded alongside engine, exhaust and ECU modifications.

For bikes such as the Harley-Davidson Road Glide, the conversion provides something very different from a cosmetic clutch upgrade — this is a properly engineered dry slipper clutch system designed to change both how the clutch performs and how the bike feels during hard deceleration.

At P3 Tuning, we specialise in tuned and modified motorcycles, and this is exactly the sort of upgrade that belongs on a serious Harley-Davidson performance build — functional, beautifully engineered and absolutely not subtle.

Browse our range of STM Dry Clutch Conversion Kits for Harley-Davidson motorcycles below and check the individual product fitment before ordering.

STM Harley-Davidson dry clutch conversions, slipper clutches and performance clutch components, supplied by P3 Tuning.