Blackspire Cog Extender Recognition shoes the Fillmore valves 3X air

the Fillmore valves 3X air flow makes seating tubeless tires a snap and the Micro-Adjust feature allows you to perfectly dial in tire pressure

Close ratio spec for DH <11-28T

Safety innovations like Koroyd™ and MIPS® provide energy-absorbing impact protection so you have the confidence to get aggressive on the trail

1 brake fluids

Blackspire Cog Extender Recognition shoes the Fillmore valves 3X airNew ReCOGnition! 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. Pair this with a BLACKSPIRE Snaggletooth WP ring up front and your ready to ride. New ReCOGnition! 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. Pair