These 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.
Shimano GRX cranksets including RX600 and RX810
Drop-Stop ST is designed for Shimano 12-speed Hyperglide+ chains
Drop-Stop B tooth profile is compatible with SRAM Flattop chain
Wolf Tooth’s patented Drop-Stop wide/narrow tooth profile provides the ultimate chain retention and mud-shedding ability
If you plan to ride in very muddy conditions, we recommend a chain guide or chain keeper in addition to a clutch-type rear derailleur. Without these precautions, you may experience chain drops and/or chain suck.
Weight: 36t • 65.5g | 38t • 72g | 40t • 84g | 42t • 89g | 44t • 92g| 46t • 102g Material:7075-T6 aluminum Chainline: 50mm (same as Shimano GRX chainrings) Made in the USA