SHIMANO Ultegra Biela Left 170mm Crankset - Black Bicycle Crank FC-R8100-P

The SHIMANO Biela Left 170mm crankset delivers professional-grade performance for cyclists and bike workshop professionals seeking reliable drivetrain components. This durable cycling-grade left crank arm is engineered for controlled power transfer and precise gear engagement, making it an essential upgrade for maintenance and repair work on SHIMANO-equipped bikes.

• Durable cycling-grade construction — withstands high torque and repeated pedalling cycles for long-lasting performance
• 170mm crank arm length — optimised for standard frame sizes and rider comfort during extended rides
• SHIMANO precision engineering — ensures smooth drivetrain operation and consistent chainset performance
• Left-side component — designed as a replacement part for SHIMANO FC-RX and compatible crankset systems
• Controlled handling geometry — promotes efficient power delivery from pedal to chainring for responsive acceleration
• Professional workshop reliability — trusted by bike mechanics for servicing and upgrading drivetrain systems
  
  *Photo shows 172.5mm but the listing is for model170mm*

Perfect for replacing worn cranks or building custom bike setups, this SHIMANO biela component integrates seamlessly with your existing chainset and cables. Choose this left crank arm to restore your bicycle's performance and ensure smooth, efficient gear transitions.