the rex-x or xterminator as it is known in the us is quite a tough buggy, the only weak spot is the tabs on the front and rear diff cases (they stick up like a pair of rabbit ears) either make up some braces for them or carry some spare ones . appart from that thier fine

http://www.jperkinsdistribution.co.u...e%20parts#T110

i still have mine its not as good a racer as my ttr eb4 s3 but its just as tough, and didnt wear parts anuywhere near as fast as my hyper7 did.