Do yourself a favor, get the GHEA collars, them traxxas things are just that, cheap substitutes for a race car part.

Also looking into getting the GHEA #2 pistons. As well as a set of springs from the Yokomo BMAX2, similar to kyosho's but alot cheaper. I just ordered them from Japan, like $46 for all (5 sets) shipped to Ohio.

I am currently running both and really like them. Just waiting till i cant get my hands on some the AVID springs.