Hi All, Just to let you know I've put my Carbon Fibre exhausts up on Ebay. They were originally from an ST4. These rarely come up & better for someone to have use of them than have them gathering dust in my garage. The pipe diameter is ~48mm where they meet the headers. I bought these before buying a bike & my ST3 has smaller header outlet & also it already has aftermarket cans. So I've never used these Carbon items, but have heard bikes with similar on at the Bristol Italian day & they sound really meaty! I am down in Dartmouth so if any locals are interested I am happy for collection to save the carriage costs. Ebay item is 261590878205. If anyone needs any extra pics or dimensions, just let me know. All the best, Mark 03 ST3