I just got a used gas tank for my ZX7R that I'll be using for track riding purposes, but it doesn't come with a gas cap.

My options seem to be either get OEM, used gas caps with key on eBay, or aftermarket keyless gas caps.

What is your recommendation on the gas cap? Should I just go OEM (new/used), or go keyless?

My only concern with keyless is if some body decides to not play nice and dump something in my tank...

Thanks in advance for any input you may have.


Yusuke