I bought the tyres from DS standard pattern tread yet to see what there like,as for the exhaust I bought Carpys one from the US nice quality I had it ceramic coated black but he does a nice stainless one nowpretty cheap for stainless aswell, it's pretty much a yoshi replica also there are stainless yoshi replicas on eBay,they sound really nice I've had to up the jets because I'm running single pod filters cheers.