Super Booster Rear Hub Spacing Kit
The Super Booster rear hub spacer kit is designed to give your 148mm rear thru-axle hubs the extra boost they need to fit any 157mm frame., Super
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Parts - BIKEALOT
Parts - BIKEALOT
To Boost Or To Superboost: What's The Hubub On The Hubs?, 45% OFF
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Bicycling Catalog - The Bike Shop Johnson, TN
The Super Booster hub spacer kit is designed to give your 148mm rear thru-axle hubs the extra boost they need to fit any 157mm frame.9mm spacer
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DT Swiss 350 MTB 12x157mm Super Boost 32H Rear Hub - Fanatik Bike Co.
Boost Spacing Shouldn't Matter
Boostinator