NINER Bio-Centric I EBB Adapter

The Niner BioCentric makes adjustments easy across a wide range of gears and eliminates the need for adjustable dropouts, giving the cleanest possible solution for singlespeed use. No bolt on hubs, no chain tensioners cluttering your ride, no brake adjustments with gear changes. Greater Range. The BioCentric offsets the bottom bracket spindle 8.5 mm from center, offering greater range of adjustment compared to a more traditional EBB setup. More offset is a boon when changing gears without having to change chain length and it allows riders to make more noticeable changes to frame geometry via B position. Easy adjustments. No bolt on hubs, no chain tensioners cluttering your ride, no brake adjustments with gear changes.