This is what I was worried about hearing, I would guess it's only around .8mm thick around the motor cutouts, incredibly thin for aluminum to retain trueness. Ironically Xray sells a 1.5mm thick Flex Alu chassis that they state in the description that it's strictly for competition races only and has reduced durability. This bleeding edge advancement in chassis design has its limits for independent drivers like myself that can't pocket $130 USD chassis over a small oopsie, I'd have preferred they offered a MTC2 carbon chassis option. Not sure if I want to "upgrade" to the MTC3 just yet. Maybe see if Mugen does something down the lines like the steel chassis or a MTC3R with a carbon chassis option.