Stone Road Bike Crankset 28.99mm DUB 8 Bolts Pins Alu 7050-T7451 155 160 165 170 172.5 175mm Crank for AXS Spiders Powermeter chainring FORCE RED RIVAL 29mm gravel bike STONEDW XPLR 12s 13s

STONE / STONEDW 29mm DUB 8-Bolt Direct Mount Road / Gravel Crankset

A precision-machined road and gravel crankset designed for 29mm DUB systems, 8-bolt direct mount components, and high-strength long-distance riding use.

Compatibility

• for road bike / gravel bike frames
• for 29mm DUB bottom bracket systems
• for SRAM AXS road drivetrains
• for FORCE / RED / RIVAL compatible setups
• Crank parameters compatible to SRAM FORCE FC-FRC-D1
•  for road and gravel 1x / 2x drivetrain configurations with compatible 8-bolt components
• for 8-bolt direct mount chainrings, spiders, and power meters

Not Compatible With

• not for Shimano Hollowtech II 24mm bottom brackets.
• not for 3-bolt direct mount chainrings, spiders, or power meters.
• not for non-DUB bottom bracket systems without a compatible adapter.
• not for MTB wide chainline setups unless all fitment parameters are confirmed.
• not for bottom brackets or frames that do not support 29mm DUB spindle systems.

Size and Weight

155mm / 483.9g (17.07oz)
160mm / 491.5g (17.34oz)
162.5mm / 494.4g (17.44oz)
165mm / 507.5g (17.90oz)
167.5mm / 510.8g (18.02oz)
170mm / 514.5g (18.15oz)
172.5mm / 518.5g (18.29oz)
175mm / 525.5g (18.53oz)

Weight may vary slightly due to production batches.

Product Specifications

Brand: STONE / STONEDW

Spindle Diameter: 29mm DUB

Interface: 8-bolt direct mount

Q-Factor: 146mm

Crank Parameters: compatible to SRAM FORCE FC-FRC-D1

Bike Type: Road Bike / Gravel Bike

Crank Length: 155mm / 160mm / 162.5mm / 165mm / 167.5mm / 170mm / 172.5mm / 175mm

Color: Black / Silver

Surface Finish: Anodized

Crank Arms: 7050-T7451 Aluminum
Other Components: 7075-T651 Aluminum

Direct Mount Interface

• 8-bolt direct mount interface for modern road and gravel drivetrain setups.
• Compatible with 8-bolt direct mount chainrings, spiders, and power meter spiders.
• Designed for AXS-style road and gravel crank configurations.
• Provides stable connection, accurate positioning, and reliable power transfer.

Precision Manufacturing

• In-house CNC machining for stable production quality.
• Renishaw probing system for in-process measurement.
• Automatic compensation helps improve machining accuracy.
• Designed for accurate centering and tight tolerance control.
• Consistent quality across production batches.

Spindle Precision

• High-strength aluminum alloy spindle.
• High roundness and geometric accuracy.
• Spline interface symmetry tolerance: ≤ 0.015mm.
• Spindle roundness tolerance: ≤ 0.01mm.
• Designed for smooth engagement and long-term durability under high torque.

Fatigue Testing

• Passed multi-configuration fatigue testing.

45° / 1800N / 100,000 cycles.
30° / 1800N / 100,000 cycles.

• Structure optimized through long-term testing for better strength and durability.

Material and Engineering

• Crank arms are made from premium 7050-T7451 aluminum alloy.
• 7050 aluminum provides excellent fatigue resistance and structural reliability.
• Other components are made from 7075-T651 aluminum alloy.
• 7075 aluminum provides high overall strength and an excellent strength-to-weight ratio.
• Aluminum sourced from U.S. suppliers such as Aleris and Aleco.
• Manufactured with high processing standards and precision-focused engineering.

Package Includes

• Right crank arm × 1
• Left crank arm × 1
• Spindle × 1
• Pedal washers × 2
• 3mm spacer × 1
• 8-bolt mounting bolts × 8
• Grease × 1

Installation Notice

• Please confirm your bottom bracket, frame clearance, chainring, spider, power meter, and drivetrain before purchase.
• Use only compatible 8-bolt direct mount chainrings, spiders, or power meters.
• This crankset is designed for 29mm DUB bottom bracket systems.
• Professional installation is recommended.

Default shipment: 120mm spindle. Please contact us before ordering if you need a 125mm spindle.