Miche X2 RD R81 Powermeter Box Chainring – Maximum Transmission, Maximum Precision
Every watt generated deserves to be transferred to the road with total efficiency. The Miche X2 RD R81 Powermeter Box Chainring is made for cyclists who demand the highest standards: stiffness, lightness, and impeccable power transmission with every pedal stroke.
Designed to ensure absolute precision, this chainring is optimized for those seeking a real upgrade in their road bike's performance.
Dura-Ace 9200 and Ultegra 8100 compatibility
The X2 RD family includes two variants specific to different types of cranksets:
X2 RD R92 – designed for SHIMANO Dura-Ace 9200 cranksets, available in 50, 52, 54, 55, and 56 teeth.
X2 RD R81 – designed for SHIMANO Ultegra 8100 cranksets, available in 50, 52, and 54 teeth.
Both follow the same Miche construction philosophy: maximum precision, stiffness, and power control.
Maximum configuration freedom
The chainring is compatible with both:
Miche R12 internal gears
original Shimano gears
This allows for custom setups, optimized for every cyclist's needs.
Advanced engineering
The key to the X2 RD's performance is its construction:
This combination creates a unique "alchemy" that guarantees:
The dedicated design makes the chainring fully compatible with cranksets with or without power meter, ensuring optimal performance in any configuration.
When every watt counts
The X2 RD is not just for pushing harder:
serves to enhance every watt, turning energy into real speed. It is the result of a rigorous engineering process and top-quality construction, pillars of the Miche brand.
Every watt saved translates into:
efficiency
time gained
performance
better final result
Technical Specifications
Product code: CGX2LB8
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Weight:
Speed: 12s
Material: Carbon + AL 7075-T6 / CNC
BCD: 110 / 4 holes
Crankset compatibility: SHIMANO® Ultegra R8100
Available teeth: 50 – 52 – 54
