+1 for the TEKNO SCT410
I have raced my SCT410.1 on both indoor turf and outdoor dirt and no problem in my area with maintaining the same corner speed with other Losi drivers.
Unfortunately the 4WD Mini Truggy class replaced 4WD SCT class in our area so my SCT410.1 is just collecting dust these days, but I do plan to run it on a small indoor carpet track next month in MO for a regional race event, so I look forward to seeing how it does there