Tripeak pulley wheels ceramic bearings 13T/13T 12S GRX812/817/M91XX black

Upgrade your bike with Tripeak's 13T/13T ceramic pulley wheels and experience the unmatched advantage of technology built on ceramic bearings. 

• Versatile compatibility: Fits seamlessly with Shimano's RD-M91XX series, both mechanical and electronic systems. For MTB, they are compatible with Shimano SHADOW RD+ MTB RD-M9120 (12S) and XT-M8100 series. 

  For gravel, they are compatible with Shimano GRX 812/817.

• Optimized tooth configuration: With 13 teeth on top and bottom, these pulley wheels provide maximum efficiency and durability, perfect for MTB's 1x12 speed systems.
• Race-proven: These pulley wheels have proven their worth under the most demanding race conditions. It's time to feel the difference in your gear shifting and overall performance.
• Ceramic bearings: Equipped with top-quality Grade 5 ceramic bearings, these pulley wheels enhance your chain's rolling capability and reduce friction.
• Robust molded composite material: Made from high-performance composite materials, these pulley wheels ensure long-lasting durability and exceptional performance, even under the most demanding conditions.

Compatible with Shimano 12-speed gear systems and made from strong and durable materials.