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The RS01E rotor is stronger
on par with best-in-class
The X1 introduces side knobs that break the mold positioned higher and more aggressively than the center tread
XX SL Eagle Transmission Crank: Ultra-strong
choose the Forekaster
Eagle 90 T-Type SRAM Eagle Transmission The RS01E rotor is strongerFull Mount Design (UDH frame required) T Type compatibility Most robust mechanical derailleur Replaceable skid plates, outer and inner parallelogram link, cage or cage assembly The most rebuildable derailleur in the Eagle Transmission Ecosystem T Type cable actuation ratio SRAM Model ID: RD 90 A1 Attributes Maximum Cog 52T Minimum Cog 10T Primary Color Black RD Capacity 42T Speed 12