Praxis Works

Doon-GR Carbon Gravel Crank Arms

The Praxis Works Doon-GR Carbon Gravel Crank Arms are built for modern gravel drivetrains that demand low weight, precise chainline control, and broad gearing options. With pro-level carbon arms paired to an M30 Thru 30mm alloy spindle, this crankset targets riders who want stiffness under load without the penalty of a heavy crank—whether set up for 1x simplicity or 2x range.

Upgrade-focused details for gravel drivetrain builds

• Gravel-specific chainline spacing - Designed to place the chain where it needs to be for current gravel 1x or 2x setups, improving shift consistency and reducing drivetrain compromises
• M30 Thru 30mm alloy spindle - Large-diameter spindle support for confident power transfer and solid pedaling feel on rough surfaces
• Direct Mount 3-bolt interface - Clean, stiff chainring mounting; for 1x chainring options use PX207*
• 2x-ready compatibility - For Praxis 2x chainring options, use Levatime II PX2115 or PX2116 to build a true gravel 2x drivetrain
• GRX and SRAM Wide applications - Compatible with 10–12 speed Shimano GRX drivetrains and SRAM “Wide” setups for flexible spec’ing across brands
• Fit and weight you can plan around - 150mm Q-factor; claimed weight 324g (172.5mm arms only, without BB and rings)

With its common 3-bolt architecture, the Doon-GR also supports aftermarket power meter spider options from multiple brands, making it a strong choice for data-driven gravel builds without locking the rider into a single measurement ecosystem.