CRM fixer bargain...
Whilst shopping on eBay for unrelated items, this came up:
I'm sure that Hockey would be able to help with replacing either the damaged muffler or repairing by replacing the skin on the damaged muffler all for a price well less than purchasing new.
From personal experience, Chain Reaction Moto exhausts are quality built items, and are great to deal with for customer service. My CRM is my forever after exhaust for my Speedy.