STONE MTB aluminium crank arms SRAM DUB 8-BOLT

Stone CNC 7050-T7451 Aluminum Crank Arms

Precision-machined from 7050-T7451 aluminum alloy, this crank arm set provides a rigid, durable interface for SRAM 8-bolt chainrings and spiders. The 29mm DUB spindle ensures precise alignment across bottom bracket shells, while 0.01mm machining tolerances eliminate mechanical play under load. Available down to 150mm to optimize pedaling ergonomics on modern MTB and Gravel setups.

Points clé

CNC-machined 7050-T7451 aluminum delivering high mechanical strength and fatigue resistance.

8-bolt Direct Mount interface fully compatible with SRAM chainrings and spiders.

29mm DUB spindle ensuring structural stiffness and smooth bearing engagement.

0.01mm machining tolerance controlled for play-free fitment.

Crank lengths from 150mm to 175mm tailored to rider fit and clearance requirements.

Compatibilité

Compatible with standard SRAM DUB bottom brackets (29mm axle) and Direct Mount 8-bolt chainrings. Validated for SRAM AXS T-Type, XX1, and XPLR 12-speed and 13-speed drivetrains across MTB and Gravel applications.

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