Shimano FC-R8100-P Ultegra 12-Speed Double Power Meter Chainset

The Shimano FC-R8100-P Ultegra 12-Speed Double Power Meter Chainset delivers precise power measurement and pro-level efficiency in a lightweight, rigid design. Built with HollowTech II construction and integrated dual-sided sensors, it provides accurate data, smoother shifts, and superior stiffness. This chainset is engineered to enhance performance, reliability, and control for serious riders.

Key Features and Benefits:

• Integrated dual-sided power meter: Measures output from both crank arms with ±2% accuracy. Provides consistent, real-time data for refined training and pacing control.
• Accurately calibrated strain gauges: Built into the crank arm for stability through rotation. Ensures precision in every pedal stroke to optimise power distribution and efficiency.
• Bluetooth and ANT+ connectivity: Enables seamless data transfer and wireless firmware updates. Simplifies setup and ensures compatibility with modern cycling devices and apps.
• Integrated rechargeable battery: Offers long-lasting power within a fully sealed housing. Delivers reliable operation in all weather conditions with minimal maintenance.
• HollowGlide outer chainring design: Reduces flex under load for faster, crisper shifts. Improves power transfer and maintains efficiency during intense efforts.
• Optimised 12-speed HG chain interface: Increases tooth contact for smooth engagement. Maximises drivetrain efficiency and reduces friction for better acceleration.
• HollowTech II cold-forged crank arms: Combine light weight with exceptional rigidity. Boost pedalling response and durability for competitive performance.
• Wide gear pitch spacing: Enhances clearance for 135/142mm O.L.D. frames. Expands frame compatibility for modern road and aero setups.

Precision and efficiency define this chainset’s design. The HollowTech II construction and dual-sided power measurement system deliver unmatched accuracy and stiffness without excess weight. Riders benefit from stable data feedback, smooth shifting, and an optimised drivetrain that supports consistent output in every race or training effort.

Built for cyclists who value data-driven performance and reliable engineering, the FC-R8100-P provides the ideal blend of strength, accuracy, and integration. Its lightweight design, weather-proof battery, and proven connectivity make it a dependable upgrade for riders aiming to improve their performance with confidence.