Booster thru-axle hub spacer kits are designed to give your non-Boost front and rear thru-axle hubs the boost they need to fit any Boost-compatible frame or fork.

The Problem Solvers Axle Nut is perfect for wheels with solid axles (also called bolt-on axles). This quality nut is made of durable chrome-plated steel and features a built-in integrated rotating washer to hold tight.