CORONA MICHE X2 RD R81 POWER METER READY

The Miche X2 RD R81 is the outer chainring designed for those who demand the utmost in terms of efficiency, stiffness, and power transmission precision. Engineered for Shimano Ultegra R8100 12-speed groupsets, it was born with the goal of transforming every watt expressed on the pedals into immediate thrust, reducing losses and maximizing pedaling efficiency.

Crafted with a sophisticated hybrid structure, the X2 RD R81 combines a CNC-machined AL 7075-T6 aluminum plate with a structural layer of 3K carbon fiber. This combination achieves an ideal balance between lightness, stiffness, and responsiveness, offering direct and precise feedback even under high loads. The result is a high-performance chainring, developed for demanding cyclists and race-oriented setups.

The Miche X2 RD R81 is specifically designed for Shimano Ultegra 8100 cranksets and is available in 50, 52, and 54-tooth configurations. It maintains the same construction philosophy as the R92 version, dedicated to Dura-Ace 9200, but with configurations specifically developed for the Ultegra target. Compatibility with Miche R12 inner chainrings and original Shimano chainrings also offers greater configuration freedom, allowing the cyclist to choose the setup best suited to their needs.

One of the most interesting aspects of this Miche chainring is its dedicated design, compatible with both cranksets equipped with a power meter and configurations without a power meter. This ensures precise integration and optimal operation in any setup, without compromising performance.

The Miche X2 RD R81 is the ideal choice for those seeking a 12-speed outer chainring for Shimano Ultegra R8100 capable of offering efficient power transmission, high structural stiffness, and a high-level technical aesthetic. Every detail has been developed to improve the overall efficiency of the bike and enhance every single pedal stroke.

Technical Specifications:

Product Name
Miche X2 RD R81

Type
outer chainring for road bikes

Compatibility
Shimano Ultegra R8100
compatible with Shimano 12-speed groupsets

Speeds
12s

Material
carbon fiber + CNC-machined AL 7075-T6 aluminum

BCD
110 / 4-bolt

Inner Chainring Compatibility
Miche R12
original Shimano inner chainrings

Configuration Compatibility
cranksets with power meter
cranksets without power meter

Available Tooth Counts
50T
52T
54T

Weight
50T Power Meter Ready: 126 g
50T: 127 g