Rekluse RMS-8907075 RadiusCX 4.0 Clutch Kit 2005-2026 Yamaha YZ125/X

Elite Two-Stroke Performance: Rekluse RadiusCX 4.0

Keeping a small-bore two-stroke on the pipe requires precision, and the Rekluse RadiusCX 4.0 is the ultimate Racing Performance upgrade to help you do just that. Designed to eliminate stalling in tight woods or deep loam, this auto-clutch system allows you to ride a gear higher and focus entirely on your corner speed. Moto-House MX knows that YZ125 riders demand responsiveness, and the RadiusCX 4.0 delivers the most connected feel ever offered in an auto-clutch.

The 4.0 generation brings Heavy Duty durability to the high-revving Yamaha YZ125 and YZ125X. With updated base materials designed to handle the extreme heat of a pinned 125, the new EXP 4.0 rolling contact wedges provide a smoother, more direct power delivery. By replacing sliding friction with rolling pins, Rekluse has reduced resistance, giving you a lightning-fast engagement that feels like a perfectly tuned manual clutch but with the safety net of anti-stall technology.

Top Features: Rekluse RadiusCX 4.0 Clutch Kit

• EXP 4.0 Technology: New rolling contact wedges with built-in pins provide a smoother engagement and a more responsive, "connected" lever feel.
• Enhanced Heat Resistance: Updated base materials are engineered to maintain strength and performance in the high-temperature environments 125cc engines create.
• TorqDrive Friction Design: Proprietary friction pads match the TorqDrive design for superior oil flow and cooling, ensuring consistent operation all moto long.
• Rigid Internal Design: Redesigned internal wall bases increase strength and rigidity, translating to more direct power delivery to the rear wheel.
• Modern Engine Tuning: Engagement curves are updated to match modern engine characteristics, with multiple tuning options for wedge weights and springs.

Fitment List

Year Range	Vehicle Brand	Vehicle Model & Size
2005-2026	Yamaha	YZ125
2020-2026	Yamaha	YZ125X

Frequently Asked Questions

Q: Will this help me in the woods on my YZ125X?
A: Absolutely. It makes technical climbs and tight single-track much easier by preventing stalls when the RPMs drop, allowing you to focus on your momentum.

Q: Does the RadiusCX 4.0 change the weight of the bike?
A: The kit is designed to be as light as possible (approx. 4.74 lbs package weight) to ensure your 125 retains its flickable, lightweight feel while adding massive performance benefits.

Q: Can I still "flick" the clutch to get into the powerband?
A: Yes. You retain full manual override of the clutch lever, so you can still snap the clutch to get the bike up on the pipe whenever you need that extra hit.

Upgrade Your Bike and dominate the track today!

Moto-House MX – Choice of Champions – is located in Clermont/Montverde, FL. The best motocross shop in Central Florida.