Rekluse RMS-8312003 RadiusX 4.0 Auto Clutch Kit DDS Triumph TF450

The Rekluse RadiusX 4.0 (DDS) is a high-performance automatic clutch kit engineered as a drop-in clutch pack replacement for the Triumph TF450. This system integrates TorqDrive® friction disk technology with the next-generation EXP 4.0 auto clutch disk, delivering stronger power transfer, improved clutch durability, and rider-focused auto clutch functionality.

The EXP 4.0 disk operates on engine RPM, automatically engaging and disengaging the clutch so riders can start and stop without touching the clutch lever — virtually eliminating stalling. Riders retain full, normal use of the clutch lever at any time to manually override the auto functionality.

EXP 4.0 Key Improvements:

• Upgraded base material providing improved strength at high temperatures
• Revised base design improving strength and rigidity for a more connected lever feel
• Improved wedge design with pins allows rolling instead of sliding to expand the disk, creating more responsive and smoother engagement
• TorqDrive friction pad design matches revised oil flow characteristics for improved cooling and consistent operation
• Engagement curve designs updated to better match modern motorcycle engine characteristics
• More tuning options with varying wedge weights and EXP springs

TorqDrive® Friction Disk Technology provides stronger power delivery and more reliable, responsive clutch modulation paired with the EXP 4.0 disk — all within a straightforward drop-in clutch pack format.

Compatible with all Rekluse clutch covers or the stock clutch cover with the supplied gasket (OEM seal ring required). Riders upgrading from a Rekluse EXP 3.0 system can retrofit EXP 4.0 with a simple disk swap and adjustment check.