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 Clutch (Part RMS-8907070) is engineered to enhance your motorcycle's performance with advanced technology and durable construction. Designed specifically for Yamaha YZ250X models from 2016 and 2017, as well as Yamaha YZ250 models from 1999 to 2006, this auto clutch system delivers smoother operation and increased power transfer. The upgraded base material provides improved strength at high temperatures, ensuring reliable performance during intense riding sessions.
The internal wall of the RadiusCX 4.0 has been redesigned for greater strength and rigidity, which translates into a more connected and responsive lever feel for the rider. The external friction pads have been matched to the proprietary friction design found on Rekluse TorqDrive clutch plates, promoting better oil flow characteristics and enhanced cooling. These improvements contribute to consistent clutch operation and longer component life, even under demanding conditions.
A key innovation in the RadiusCX 4.0 is the new wedge design featuring pins that enable rolling contact. This design reduces friction and resistance compared to sliding wedges, resulting in smoother engagement and a more responsive power delivery. The roller design decreases the friction coefficient by 98%, which significantly enhances clutch feel and overall performance. The product also retains full manual control, allowing riders to override auto functionality whenever necessary. With this advanced clutch system, riders can enjoy improved control, increased traction, and better confidence navigating challenging terrain.
The combination of TorqDrive friction disks, core technology, and the EXP 4.0 features makes the RadiusCX 4.0 a top-tier choice for serious riders seeking durability, efficiency, and superior engagement. Whether you’re racing or trail riding, this clutch offers a substantial upgrade from OEM components, providing longer-lasting performance and a more connected riding experience.
Features:
- Auto clutch eliminates stalling and allows seamless start and stop without clutch lever usage
- Enhanced power transfer compared to OEM systems
- Enables riding in a taller gear for better suspension performance and energy savings
- TorqDrive clutch pack extends clutch life with less adjustment required
- Full manual override maintains traditional clutch control when needed
- Improved rider control, traction, and confidence in difficult terrain
- More direct power delivery and increased durability with upgraded base material
- Revised design improves strength and rigidity for better feel
- Innovative wedge with pins uses rolling contact for smoother engagement
- Friction pads designed to optimize oil flow and cooling
- Updated engagement curves for modern engine characteristics
Fits
1999 Yamaha YZ250
2000 Yamaha YZ250
2001 Yamaha YZ250
2002 Yamaha YZ250
2003 Yamaha YZ250
2004 Yamaha YZ250
2005 Yamaha YZ250
2006 Yamaha YZ250
2007 Yamaha YZ250
2008 Yamaha YZ250
2009 Yamaha YZ250
2010 Yamaha YZ250
2011 Yamaha YZ250
2012 Yamaha YZ250
2013 Yamaha YZ250
2014 Yamaha YZ250
2015 Yamaha YZ250
2016 Yamaha YZ250
2016 Yamaha YZ250X
2017 Yamaha YZ250
2017 Yamaha YZ250X
2018 Yamaha YZ250
2018 Yamaha YZ250X
2019 Yamaha YZ250
2019 Yamaha YZ250X
2020 Yamaha YZ250
2020 Yamaha YZ250X
2021 Yamaha YZ250
2021 Yamaha YZ250X
2022 Yamaha YZ250
2022 Yamaha YZ250X
2023 Yamaha YZ250
2023 Yamaha YZ250X
2024 Yamaha YZ250
2024 Yamaha YZ250X
US Dollars
