Rekluse Racing RadiusCX 4.0 Auto Clutch Kit for 2026 Yamaha YZ450F – RMS-8907276

The base material used for EXP 4.0 has been updated to provide better strength in high temperature environments, critical for the heat clutch systems create. Next, the internal wall of the EXP 4.0 bases were redesigned for strength and rigidity, which helps translate to a more connected lever feel for the rider. On the outside of the EXP disk, riders will notice the friction pads now match the proprietary friction design found on Rekluse TorqDrive clutch plates. Applying this friction pad design helps match oil flow characteristics of the clutch pack beneath, promoting improved cooling capability and consistent operation. The ‘wedges’ are a critical component to the centrifugal functionality of EXP 4.0. In the previous iteration, the Teflon wedges would slide up and down ramps built into the EXP bases to engage and disengage the clutch. EXP 4.0’s wedge has been improved to now use rolling contact with built-in pins. Rolling versus sliding creates less friction and resistance, providing smoother engagement and a more responsive feel, creating stronger power delivery overall. New roller design reduces the friction coefficient by 98% When you need the best, look no further than RadiusCX it is the top of the line auto clutch product that brings together all of our latest technology into one package. TorqDrive friction disk technology coupled with the new EXP 4.0 and our Core technology results in significant advancement in auto performance with exceptional hook-up, lever feel and durability. Just when you thought auto couldn’t get better, RadiusCX 4.0 has raised the bar.

The Rekluse Racing RadiusCX 4.0 auto clutch kit is engineered for the 2026 Yamaha YZ450F, combining TorqDrive friction disk technology, the EXP 4.0 auto-clutch system, and Rekluse Core technology. This integrated clutch solution helps prevent stalling, improves power transfer, and gives riders greater control in demanding terrain while retaining normal use of the clutch lever for complete manual override.

The EXP 4.0 system features an upgraded base material for improved strength in high-temperature clutch environments. Its redesigned internal wall increases rigidity and contributes to a more connected lever feel. The updated wedge design uses built-in pins and rolling contact rather than sliding contact, reducing friction and resistance for smoother engagement, quicker response, and stronger power delivery. Revised engagement curves are also designed to complement modern motorcycle engine characteristics.

TorqDrive friction pads match the proprietary friction design used in Rekluse TorqDrive clutch plates. This design supports the oil-flow characteristics of the clutch pack to promote improved cooling and consistent operation. The clutch pack is designed to provide longer service life with less adjustment over time, while the auto-clutch function allows riders to use a taller gear, improve traction, and reduce fatigue. The Rekluse Racing RadiusCX 4.0 clutch kit, manufacturer and vendor part number RMS-8907276, fits the 2026 Yamaha YZ450F.

Features:

• Fitment: Fits 2026 Yamaha YZ450F
• Brand: Rekluse Racing
• Model: RadiusCX 4.0
• Manufacturer part number: RMS-8907276
• Vendor part number: RMS-8907276
• Auto clutch operation: Helps eliminate stalling and allows starting and stopping without engaging the clutch lever
• Power transfer: Provides increased power transfer compared with the original equipment clutch
• Rider control: Retains full clutch-lever operation for manual override at any time
• TorqDrive clutch pack: Delivers extended clutch life with less adjustment over time
• EXP 4.0 base: Uses upgraded material for improved strength in high-temperature environments
• Base design: Revised internal structure improves strength and rigidity for a more connected lever feel
• Wedge system: Built-in pins and rolling contact reduce friction and resistance for smoother engagement
• Friction pads: Proprietary TorqDrive friction design supports oil flow, cooling, and consistent operation
• Performance benefit: Helps improve traction, confidence, and control in challenging terrain

Fitment:
2026 Yamaha YZ450F