REKLUSE RadiusX 4.0 Clutch Yamaha RMS-8307079

The REKLUSE RadiusX 4.0 Clutch is an updated expanding friction disk assembly designed for selected Yamaha motorcycle clutch systems. Its base material is engineered for improved strength in high-temperature environments, while redesigned internal wall bases provide added strength and rigidity for a more connected lever feel.

The EXP disk uses friction pads with the proprietary friction design found on REKLUSE TorqDrive clutch plates. This design matches oil flow characteristics in the clutch pack beneath, promoting improved cooling capability and consistent operation. EXP 4.0 wedges use rolling contact with built-in pins, reducing friction and resistance compared with sliding contact for smoother engagement and a more responsive feel.

Updated engagement curve designs are intended to better match modern motorcycle engine characteristics. The system provides more direct power delivery, improved durability, and additional tuning options through varying wedge weights and EXP springs. Distributor part number: RMS-8307079. Manufacturer part number: RMS-8307079. Vehicle fitment: 2016 Yamaha WR450F, 2016 Yamaha YZ450FX, 2017 Yamaha WR450F, 2017 Yamaha YZ450FX, 2018 Yamaha WR450F, and 2018 Yamaha YZ450FX.

Features:

• Updated EXP Assembly: Expanding friction disk assembly with a base material designed for improved strength in high-temperature environments.
• Reinforced Internal Walls: Redesigned internal wall bases provide added strength and rigidity for a more connected lever feel.
• Proprietary Friction Design: EXP disk friction pads match the friction design found on REKLUSE TorqDrive clutch plates.
• Improved Cooling Characteristics: Friction pad design matches oil flow characteristics in the clutch pack beneath to promote improved cooling capability and consistent operation.
• Rolling Contact Wedges: EXP 4.0 wedges use rolling contact with built-in pins to reduce friction and resistance.
• Responsive Engagement: Rolling contact supports smoother engagement and a more responsive feel.
• Tuning Options: Varying wedge weights and EXP springs provide additional tuning options.
• Vehicle Fitment: Fits 2016–2018 Yamaha WR450F and 2016–2018 Yamaha YZ450FX models listed in the product data.