X1 RD R92 Dura-Ace Chainring The X1 RD R92 is engineered for riders who demand uncompromising performance. Designed specifically for Shimano Dura-Ace R9200 cranksets, it combines exceptional stiffness, minimal weight, and precise power transfer to ensure that every watt you produce is converted into forward motion. Developed with meticulous attention to detail, the R92 features a CNC-machined AL 7075-T6 aluminium core bonded to a structural 3K carbon layer. This advanced construction creates a unique synergy of materials, delivering outstanding rigidity, responsiveness, and efficiency under load. Key Features Fully compatible with Shimano Dura-Ace R9200 (12-speed) Extremely stiff and lightweight for maximum power transfer High-performance carbon and aluminium construction Designed exclusively for Dura-Ace 9200 cranksets Specifications Weight: 297 g Speed: 12x Material: Carbon with CNC-machined AL 7075-T6 PCD: 110 Bolt Pattern: 4-bolt Compatibility: Shimano Dura-Ace R9200 Every Watt Matters The X1 RD R92 is not about riding harderit is about riding smarter. By maximizing drivetrain efficiency and minimizing energy loss, it transforms effort into speed with measurable precision. Every watt saved becomes performance gained, delivering the responsiveness and results demanded at the highest level of cycling.