SPUR
I used to use PW Racing spurs which were a lot thinner and they are in that white delrin. However with the big D-ring, I had to switch to the Kimbrough spur to take advantage of the 12 diff balls vs the PW Racing 8 diff balls. I just wish the Kimbrough spur would be a bit thinner, but their dust cover works real well. I've not rebuilt my diff for 3 race days and 1 practice day and it's still pretty decent.
Dom