perfrated exhaust core help!!

[dee2912]

H i have a yamaha blaster quad with a dmc rear silencer, i am looking for a baffle that goes inside the silencer my owe has had it, it is a perfrated exhaust core/baffle/tube etc. it has to be 25mm diameter local places have got what im looking for only in larger sizes for car exhausts iv tried all the local garages exhaust centres searched the web googled it if any1 can shed some light on it i would be grateful as the complete new exhaust is 250quid all i need is this tubing thanks