I agree with Fat500, the newer LRP Stock Spec motors are spectacular motors. I have a 10.5 that I use and I'm very happy with it. I do have a Tekin 17.5 that I'm not so thrilled with for two reasons, the endcap is not bevelled and the cap screws project around .010" past the cap. The LRP sets up easier than the Tekin for those two reasons but the Tekin does run good and when running it with a 28 tooth pinion and 86 tooth spur in the Slash it stays under 125 degrees.