my new girlfriend has ask me to have a penis reduction as it hurts her i try not to put it all in but sometimes get carried away i love her?

Larger can hurt, but most are okay if she's properly lubricated. Penis reduction isn't a thing, people (especially women) aren't that impressed by you having a big one and putting a question mark at the end of a sentence doesn't really make it a question.

Ridiculous. Large amounts of a lubricant such as K-Y jelly would be a far better idea. If that doesn't help, drop this girlfriend. She has no idea what she's asking.

No such thing.

A normal male is between 4.5 and 6.5 inches, outside of that range can be problematic for many women.

Your problem means that you will most likely have less sex with her.

Dream on little troll!