Made by GTBracing Carbon chassis for Tamiya TT-01 Carbon thickness: 2.5mm + Made by GTBracing Carbon upper deck for Tamiya TT-01 Carbon thickness: 2.5mm Condition: New and unused, but both are products made overseas. Also, the chassis does not have a Japanese-style package and is only in a zipper bag. The upper deck has a header and comes in a Japanese-style package. The TT-01 chassis is a bathtub-style chassis with an integrated gearbox, so replacing it with a carbon chassis requires considerable skill. Cast gearboxes are also sold on Amazon, etc., but due to issues such as motor mounts, it is not easy to replace, and I gave up, so I decided to sell it. Thank you for viewing.