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.

• 6mm Spacer kit adapts 142 x 12mm rear hub to 148 x 12mm 
• Includes 6mm rotor spacer w/ hardware and one 6mm axle spacer 
• Rear wheel needs to be re-dished 3mm to non-drive side