Brand New Blackspire ReCOGnition 45 Tooth Cog Extender - Black Anodized
Includes 18 tooth Cog, Spacer and B Tension Screw
Blackspire's product description: "Great addition to your 1x drive train, with just the swap of one cog to your existing 10 speed cogset. Increases range to your drive train without breaking the bank."For Shimano XT M8000 and XTR M9020
CNC'd from 7075 T6 Aluminum
This is Brand New inventory
weight is 110 grams