Need Ritchey crank end cap
 

The non-drive side of my Ritchey crank is missing the black end cap you see on the drive side. The cap is threaded and screws into my crank and has a hole in the middle for the crank bolt.

I haven't had luck on eBay or on the Ritchey website. Any idea where I can one? It's really just cosmetic, but I just want to complete the bike. (The bike isn't this dirty anymore)

https://cimg4.ibsrv.net/gimg/bikefor...185c2bbec1.jpg

https://www.ebay.com/itm/Mounting-Bo...-127632-2357-0

Like this?

i can’t tell if your Ritchey crank is square taper or Octalink or Isis. I’m assuming square taper?

It's probably one of these.

https://www.benscycle.com/problem-so...yABEgLix_D_BwE

It's an Octalink bottom bracket and the cap is separate from the bolt.

https://cimg2.ibsrv.net/gimg/bikefor...7137e2920c.jpg

https://www.universalcycles.com/shop...SABEgKdMPD_BwE

https://www.benscycle.com/fsa-self-e...iABEgIfY_D_BwE

That's the "self-extractor" part of the crank-fixing hardware. It's not actually necessary; the crank can be removed with a standard crank puller. There have been reports of this piece being cracked in the attempt to remove the crank by the self-extracting process. They do look nice though. I replaced mine with titanium from Toronto Cycles, sadly now apparently closed.

https://cimg9.ibsrv.net/gimg/bikefor...4ad5928ca6.jpg
Split image. Top is original crank bolt and chainring hardware; bottom is the Ti replacement. Notice the original was not self-extracting.

The first time I tried removing the cranks, I did leave the cap in place and thought better of it once the washer started bearing on the back side of the cap. I ended up using a puller and it required A LOT of torque.