Rear Shock Parts / Spares
Replacement parts and spares for mountain bike rear shocks, from UK sellers. Browse mounting hardware, bushings, reducers, seals, coil springs, volume spacers and service kits. Keep your shock running between services or rebuild it yourself.
What wears out on a rear shock?
Rear shocks are simpler than forks in some ways, but they still have wear items that need periodic replacement. Knowing what's available helps you maintain your shock between full professional services, and most of the common jobs are within reach of a home workshop.
Which bushings and mounting hardware do I need?
Mounting hardware and bushings are the most frequently replaced rear shock parts. The DU bushings that sit inside the mounting eyes wear over time, causing knocking and imprecise damping. Replacement kits from Fox, RockShox and aftermarket suppliers like Burgtec and Huber Bushings are straightforward to fit with a bushing press or a vice and socket set. Size is specified by the shock eye internal diameter and the bolt diameter of your frame, so measure before ordering.
Can I service the air can myself?
For air shocks, the air can seal kit is the most common DIY service. These kits include the O-rings, seals and grease needed to restore an air shock that's losing pressure, and Fox, RockShox and Cane Creek all sell model-specific kits. It's a 20-minute job with basic tools and a shock pump.
What coil spring rate do I need?
If you've bought a coil shock with the wrong spring rate, or your weight has changed, replacement springs are widely available. They're sold by rate — 400lb, 450lb, 500lb and so on — and by length. Sprindex makes a variable-rate spring that covers a range of rates in one unit, which is useful if you're not sure exactly what rate you need.
What do volume spacers do?
Volume spacers are small plastic tokens that change the progressivity of air shocks. Adding spacers makes the shock ramp up faster towards the end of travel, preventing harsh bottom-outs without needing to run higher overall pressure. Fox uses grey plastic tokens and RockShox uses Bottomless Tokens; both are cheap and easy to install during an air can service.
Should I repair or replace?
Bushings, seals, springs and spacers are all inexpensive next to a new unit, so a shock that knocks, leaks or feels wrong is usually worth reviving rather than binning. If the damper itself needs a full rebuild and the shock is old, compare the cost against a used replacement in the rear shocks listings first.