Get your SRAM S900 or S950 crankset back to full strength with the genuine left-hand (non-drive) crank arm. This is the same lightweight unidirectional carbon arm SRAM specifies across its S-series road cranks, so a damaged or worn non-drive arm is an easy, like-for-like replacement rather than a whole new crankset.

Highlights

• Genuine SRAM S900 / S950 left-hand crank arm (non-drive side)
• 170mm crank length
• Unidirectional carbon construction for stiffness with low weight
• GXP spindle interface
• Replaces a single damaged or worn arm without replacing the full crankset

What it is

The left-hand arm is the non-drive (chainring-free) side of the crankset. On SRAM's GXP system the spindle is integrated into the drive-side arm, and this left arm fits onto the end of that spindle. It is the carbon arm SRAM uses across the S900 and S950 road cranks, including the versions paired with SRAM, Quarq and SRM power-meter spiders.

Carbon where it counts

The unidirectional carbon layup keeps the arm stiff under pedalling load while shaving weight off the rotating mass, so power transfer stays direct.

Fit and compatibility

This is a 170mm left arm for SRAM S900 / S950 cranksets running the GXP spindle standard. It is not compatible with BB30 or DUB spindle cranks. Confirm your existing crankset is an S900 or S950 GXP unit and that you want the 170mm length before ordering. If you are unsure which crank arm or spindle standard you have, contact our team and we will help you confirm.