Lost Bolt from RockShox Fork

Soon after I returned my RockShox XC 32 fork from service (it’s been two years since it was installed), I noticed that a bolt is missing from the left leg. I am not sure if it was misplaced during the service, or if it was lost later in my ~60 km of rides afterwards. The fact was, I was using an incompletely assembled fork.

Obviously, I needed a replacement. The SRAM spare parts  list (pages 23-24) was not of great use to help me understand what type of bolt is required, other than it was a “shaft bolt”. Searching the Net showed that something called “Fork Shaft Bolt Kit” exists:

FK309Z03 Now, at least I got a clue how the bolt may look like, though no details on exact sizing was available.

I made some measurements of  the bolt hole with calipers and went shopping. After a bit of roaming, asking around and guesswork I found a thing that matched: A BMX bolt sized at ø8 mm, 30 mm length. There was a variant with a hollow core, but I chose a solid one, as there may be some air or oil that the bolt was meant to keep inside.

Upon returning home, I installed the bolt with a spacer and a rubber washer made of old inner tube; I don’t know if it actually required there, I just felt that it will not hurt.

So far the thing managed to hold in place:


One more view on the patient:


Written by Grigory Rechistov in Uncategorized on 08.03.2016. Tags: bolt, fork, mtb, repair, rockshox,

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