110 BCD Asymmetric 4-Bolt Chainrings for Shimano GRX Cranks Tooth Count:48T The colors are more about

The colors are more about how much bite you need than temperature

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110 BCD Asymmetric 4-Bolt Chainrings for Shimano GRX Cranks Tooth Count:48T The colors are more aboutThese chainrings are for Shimano GRX cranks. They feature our patented Drop Stop design for the best wear life, chain retention, and mud clearance. Drop Stop ST is specifically for the Shimano 12 speed Hyperglide+ chain, which is used by GRX 12 speed. Drop Stop B works with all other 9, 10, 11, and 12 spd chains, including SRAM Flattop. Compatibility Aero chainrings available in 46T 52T. Sizes 36T 44T are non aero. Aero chainrings are NOT compatible