Akrapovič carbon fibre parts have unfortunately been discontinued for quite some time now. Below are weblinks to a couple of companies who may still have some old stock left. Also every now and then some of their carbon fibre parts do appear on eBay especially in the UK.
The final page of the pdf linked below details all the carbon fibre parts that Akrapovič made for the 07-12 CBR600RR. These are the only genuine parts that Akrapovič ever produced. If you have any luck when searching unless it's listed in this catalogue and the part numbers match do not purchase it as there are imitations out there. Furthermore, Akrapovič carbon fibre is handmade and finished and you will find the part number stamped on the underside along with the signature of the craftsman that made it together with a handwritten date of manufacture.