Unleash Peak Performance with Featherlight Precision.
Struggling with heavy, inflexible cranksets that limit your ride? The Praxis Doon carbon M30-Thru 172.5mm armset delivers the ultimate fusion of lightness, stiffness, and versatility. Engineered for riders who demand the lightest professional-grade full carbon road crank, it seamlessly integrates with 10/11/12-speed Shimano, SRAM, and Campagnolo drivetrains. The innovative M30-THRU spindle allows precise preload adjustment, compatible with Praxis’s 30mm/30 bottom bracket or any other brand, ensuring a perfect fit and unmatched power transfer.
Key Features
- Ultra-lightweight full carbon construction for maximum speed and efficiency.
- Exceptional stiffness to optimize every watt of your pedal stroke.
- Versatile compatibility with 10, 11, and 12-speed Shimano, SRAM, and Campagnolo systems.
- M30-THRU spindle enables adjustable preload for flawless bottom bracket integration.
- 172.5mm crank arm length tailored for precise power delivery and control.
Technical Specifications
- Material: Full carbon fiber crank arms and spider.
- Crank arm length: 172.5mm.
- Compatibility: 10, 11, and 12-speed drivetrains.
- Drivetrain compatibility: Shimano, SRAM, Campagnolo.
- Spindle type: M30-THRU 30mm diameter.
- Preload adjustment: Yes, compatible with Praxis 30mm/30 BB or other brands.
- Design focus: Maximum stiffness and lightweight performance.

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