Mugen Bulldog sold in 1985 said it has this special air shock. It was preassembled and can't be opened for service. Now I have one to dissect and open up. An interesting coil, o-ring on the piston, seriously nothing more than just a friction damper
Man... I had one of those... Went to 麼頓台 all the time back then..... Faster then all other hotshot/Optima etc... Car was fast...I even ran it with those 1/8 Serpent back then,,, . But hard to get parts...(興記 there....)