most of the sslip-ons are for wee's up to 06,the exhaust on the 07 onwards was changed.
I know remus do 1 but I'm not sure if it involves alot of cutting of the original pipes.
Other than that the only option is an after market full system.
The thing is with the Remus system, which by all accounts is a half system, means that you pay top dollar for something that you still have to cut the original pipes and still keep part of the original system.
I had this problem with my cruiser (Intruder 1800) where the whole system was welded as one piece, so needed a complete system to get a decent zorst. Then, same as the DL650, they had an 02 sensor to contend with.
These were the hideously ugly, extremely heavy, and awful sounding pipes....
So I just had the end pipes chopped off with an angle grinder, still leaving the header pipes with the 02 sensor, had some small exhaust tips fabricated out of stainless and welded them on. They were loud as feck, so had to add some small baffles in them... the result was pretty good, never needed remapping or a power commander and had no fuelling issues or problems whatsoever.
So I don't see any reason why I can't do this to the Wee.... only instead adding a race can instead of stainless tips.