I have both cars and can offer the following.
The Yokomo car requires special attention during the build to be perfect. If you build per the instructions and use stock parts you will have a car that is less than perfect. In my case the suspension components were all bound up, upper deck was tweaked, and the diffs leaked. Be prepared to sand, shim, and purchase additional items to get it perfect.
The Xray car requires absolutely no modification and additional parts during the build. You simply follow the instructions and use the supplied parts. Everything goes well together and you’ll have a perfectly built car with excellent shocks, diff, and free suspension.
My BD7 and it’s components are geared for 17.5 blinky racing on an indoor high bite carpet track, so, i can’t comment on it’s performance in low grip asphalt. I prefer the feel of my Yokomo over the Xray and I think I can be faster with it eventually. I thinks both cars are great and can be setup to be fast under any condition. The Yokomo will test your skills as a builder, whereas, the Xray is pretty straight forward to build.
- Middle River Hobbies - The Track -