Shimano SLX FC-M7100 Left Crank Arm – 175mm

The Shimano Ultegra FC-R8100 left crank arm features HOLLOWGLIDE structure that cuts weight yet maintains strength for better power transfer and quicker, more precise front shifting.

• Crafted with anodized aluminum for for high strength and light weight

Power every ride with the SRAM Rival AXS Wide Power Meter Arm and Spindle Upgrade Kit. This power meter platform is entirely contained within the DUB spindle for clean integration that fits more bikes than ever. It’s invisible technology that adds minimal weight and will help you get to the finish line faster, and can be used to upgrade any eTap AXS bike to power.

• Wide chainline design to fit the biggest gravel tires
• DUB-PWR spindle-based unit measures left side power to calculate total watts
• An elegant integrated design
• Proven Quarq reliability and accuracy
• Long battery life (400+ hours) to power a season of rides
• User replaceable lithium AAA battery
• DUB bottom bracket (sold separately) adds durability and simplicity
• Waterproof (IPX7 waterproof to 1 meter for 30 mins)
• Lightweight (less than 40g heavier than standard crankset)
• Simple and affordable power meter upgrade option