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Drop-Stop B is optimized for SRAM Eagle and Flattop chains
Any frame that uses an external cup headset with a 34mm upper head tube inner diameter and 34mm
ISEV-ISB is for a Shimano I-SPEC EV shifter mounting to a Shimano I-SPEC B brake
Service and additional parts available
12mm Rear Thru Axle
110 BCD Asymmetric 4-Bolt Chainrings for Shimano Cranks Tooth Count:42T Drop-Stop B is optimized forWolf Tooth was first to market with cyclocross 1x specific chainrings because we saw cyclocross as the perfect use for our patent pending Drop Stop technology. These beautifully machined 110 BCD asymmetric 4 bolt chainrings are optimized for your 1x Shimano CX road gravel drivetrain whether you run Dura Ace 9000, Ultegra 6800, 105 5800, or Tiagra 4700. They are also offset for the ideal 1x chainline. Fits 110 BCD Asymmetric 4 bolt Shimano cranks Drop
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