Ahh, I thought it might be that(stock racing). I'm so glad that every single offroad class in my area is open (mod). I race a lot of 17.5 blinky touring car, but I can't imagine racing 4WD Buggy with a 17.5. Heck, I added some boost and turbo to my 6.5 because it felt a bit too slow without any timing.
There's no problem with the XB4 spur. The problem is people are trying to race 4wd buggy with crawler motors.
