Nick, there are in fact cvds for the rear. They are shorter than the front. The front are 68mm while the rear are 65.5mm. Unfortunately, they are expensive! the cheapest I've found them is 37$US at
www.speedtechrc.com. They are 42$US at
www.evolutionhobbies.com or at
www.kenonrc.com. I don't know if these shops ship overseas though. I've seen a few people running them and originally I thought they wouldn't be necessary, but lately I've noticed a lot of wear on my dog bones in the rear. They seem to wear away quickly and the worse off they get, the more they bind the suspension. It is really starting to get noticable while driving. I'll probably eat the cost here soon and get some, but I've got a spare set of axles and dog bones that I can use first before getting the cvds. A new set of axles and dog bones is 11$.