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

SuperBooster Adaptive Kit (148 to 157)

Problem Solvers Super Booster RW Adapter Kit 9mm

Other

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Chris King Boost Centerlock rear hub – Chris King Precision Components

Other - Bike World

Problem Solvers Boost conversion (rear) : r/bikewrench

Boost Spacing Shouldn't Matter

First Ride: The 2016 Pivot Switchblade

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Boost Disk Word (148mm) – Paul Component Engineering

Standard, Boost And Super Boost? What's The Difference? - NOBL Wheels