Originally Posted by ThunderPowerRC
The Thunder Power 40C is on the list and batteries are available from Horizon Hobbies and others. TP5000-2SPRD
Speaking as one who has done side by side comparison's, running rubber tire 13.5 on asphalt, the SMC is heavier and DOES NOT work any better, if anything it was a tad weaker out of the corners. I'd go the Thunder Power route.