Boost is the WORD for new Single Speed hubs from PAUL - Bikerumor
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Industry Nine Hydra Classic Single Speed Rear MTB Hub - Wheelbuilder
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SPANK SINGLE SPEED DJ HUB – SPANK Industries
Hope Pro 4 Rear Hub - Single Speed | Wheel Hubs | wiggle.com
ELITE MTB SINGLE SPEED CASSETTE HUB – Profile Racing
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Legend 20 24 Holes Fixie Hubs Fixed Gear Bicycle Single Speed Bike Bearing Hub For Flat Spokes With Sprockets And Lock Ring - Bicycle Hubs - AliExpress