I have a Yoshi pipe and was wondering what can I use to shine it up without harming it.

 

Is that a Ti canister or what? When I bought my (Yosh Ti) pipe they sent me something like a brillo pad that would help restore the factory finish. After 2 years I have yet to use it. However, I do use the Honda Spray Cleaner/Polish on the canister and it does a really good job.

I don't think there are too many cleaners out there that will harm the pipe... unless you pour them into the outlet!!