Fox Shocks 0.875 Top Back-Up Washer Plate Goes Beneath The Nut On Rebound Side Above Valving Shims

050-01-018-a

Dimensions:
0.875" Outside Diameter
0.504" Inside Diameter
0.100" Thick

On the bottom cap, where the shaft enters the shock, Fox will usually stamp what valving they put inside the shock. For example 50/70 which is #50 compression and #70 rebound. Any time you revalve your shock, it's a good idea to replace the stover nut.

You can download any of the Fox shim stack charts below for reference. The lower the number is, the faster the shock reacts. The higher the number is, the slower the shock reacts. For example a #30 compression stack would compress MUCH faster than a #90 compression stack.

We also sell the shims individually because depending on how much of the valving you're changing, you might only need 1 or 2 shims, not an entire stack. For example going from a #45 stack to a #50 stack, only 1 shim changes.