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.

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.

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 Downtube Shift Cable Adjusters replace your existing shift adjusters, or let you add integrated shifters to your current down tube shifter-equipped road bike. Made from durable plastic and stainless steel, these adjusters are built to last for countless miles on your road steed.

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. Kit includes Center Lock Adaptor, allowing riders to use 6-bolt rotors on Shimano Center Lock compatible hubs. - 6mm spacer kit adapts 142 x 12mm rear hub to 148 x 12mm - Includes 6mm adapter to 6-bolt rotors - Includes external spline lock ring for thru-axle compatibility