Motorcycle air filter

I made this air filter for my 125 cc Lifan pit bike engine that im using on the micro car i made.
This filter uses a dish cleaning sponge as the filtering element and is not intended for heavy off road use but it filters very well the dust for a regular road conditions.
Surprisingly it supports very well the engine temperature Since i found with this that the carburetors work in a very cool temperature.
It fits to many 70 to 125 cc four stroke honda and honda clone engines
You will need 6 M3 x 25 mm with exagonal nuts for assembly
You need to download only two files, the third one is for illustration only