Used Olympic Rear Tubular Bumper. It has a small dent and scuff on the bottom driver side from a trip to RC. Asking $100 obo. Here is a couple pics and a link to it on Q-Tec. I have all the hardware for it.
http://www.quadratec.com/products/12107_310X_PG.htm
Pictures of dent. Looks better after some rattle can treatments.