I've be racing one indoors on carpet for almost a year. great car out of the box, however I do seem to get quite a lot of wear on the rear most centre output shaft, I am considering replacing with the puck drive system. If anyone has tried this on the tm4 please let me know how you get on with it. Now about to build another so I have one set up for indoor and one for astro outside. Overall really happy with quality, spares prices and availability. May go with centre diff on next one any feedback is appreciated.
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