Now available with coloured beraing covers/spacers just the US Hop Up kits.
Kit comprises: Two Profile American BB bearings without cups - can also be used as replacement bearings in any American (old style/large) BB frame. Gold spacer. 2 coloured bearings covers/spacers.
Also fits right into the new 'Mid' size BB used by Fit & FBM on some of their frame (regular US BB bearings without the cups).
For use with 19mm crank spindles only - Profile Race, We The People Royal, FSA X-Drive & Nasty Boy, Odyssey 41 Thermal, RNC 19mm, Premium Lite etc.
Please note new model Fly Bikes frame us a smaller 'Spanish' BB which is defffernt!
If you aren't sure which BB you need just ask us!
Why not add a Flush bolt kit? Select option below.
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