FULL CAR PACK NOW LIVE! - https://www.cgtrader.com/3d-model-packs/kyosho-lazer-zxr-zxrr-full-car-pack-with-some-mod-parts
Pulley gears for the rear gearbox of the Kyosho Lazer ZX, ZXR and ZXRR models. Please print these rear face down on the plate, lift them off the bed and use supports. You will have to try a few different things to get them to work best for you. Print them SLOWLY or they wont be perfectly round. Best filament for these is either PA12 or PA6 Nylon as ive found, you can print them in ASA as well but the wear may be poor. Avoid polycarbonate as its too smooth and shiny and the belt tends to slip. I have also printed these from ABS like resin on my Elegoo Saturn 3 which works really well but its up to you to try a few different things. You may need to file the end of the internal teeth into a point if making them from resin as they may crack when fitting otherwise. No filing needed on softer filament though. Please look at my Youtube video to see more details on the cars ive put together from these files - https://youtu.be/A3WvQG3Msh0?si=osWnvfyYB94u8PTG