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KM690R Mountain Bike Hub | Star Ratchet System | 250g Forged Endurance Hub

  • Forged for Endurance: The Forged 6061-T6 body provides superior grain structure and fatigue resistance compared to standard CNC hubs, making it ideal for the impacts of Enduro and Trail riding.

  • Pro-Level Engagement: The Star Ratchet system (available in 36T or 54T) offers simultaneous tooth engagement, distributing loads more evenly and providing near-instant power transfer.

  • Featherweight Performance: At only 250g, it is one of the lightest forged hubs in its class, helping you shed rotating mass for faster climbing and better suspension response.

  • Modular Versatility: Easily swap between XD, HG, and Micro Spline freehubs to match your drivetrain, ensuring the KM690R stays with you even if you upgrade your cassette.

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Durable and Lightweight Design

The KM690R mountain bike wheels rear hub boasts a high-strength forged alloy body (Alu 6061-T6), ensuring unmatched durability while maintaining a lightweight structure. Perfect for riders tackling XC, Trail, and Enduro terrains, this hub is built to deliver optimum performance and stability.

Exceptional Components for Reliable Performance

Equipped with a 7075 thru-axle, this rear hub seamlessly integrates with 28H 14g steel spokes for enhanced strength and balance. The 6-bolt disc brake compatibility ensures maximum responsiveness, providing trustworthy stopping power during your most thrilling rides.

Advanced Freehub and Ratchet System

The KM690R hub supports XD, HG, and MS freehub options, giving you flexibility for various drivetrain setups. Weighing just 250g for the HG model, it features a star ratchet system with 36T or 54T configurations, guaranteeing smooth engagement and efficient power transfer for your ride.

Specification KM690R Rear
Material AL 6061(Body)+ AL 7075(Freehub & Axle)
Spoke Holes 28H
Bearing 2x 6903/15267
Spoke Gauge 14G
OLD 148mm
End Caps 12mm Axle
Weight 250g
P.C.D. F38mm-R44mm
Freebody System PG Ratchet (36T or 54T)
Freebody HG,XD,MS

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