I have a final two sets of CR750 works replica exhausts due in about 3-4 weeks time. They will go straight out for sale so if anyone is interested up front, you can contact me using the PM system here. The exhausts are patterned directly off a genuine set of works CR750 4 into 4 exhausts and are the best non-genuine replicas I've ever seen. Well the proof is in the pudding as I used them on my own CR750 which you can see below.
The exhausts are straight through megas with the correct rolled megaphone lip. They come as a set of headers and a set of megas so you can choose whether to make a bolt up collar to join the two or to weld them up as one end to end pipe like I did. They will also require a simple bracket making each side to attach them to your frame. Mine hook into the footrests with a small piece of steel plate.
The exhausts are available for