I would try some of the main adventure bike aftermarket suppliers.
Twisted throttle has lots of great stuff. As for the crash bar, you can find it available under the V-strom accessories on the Suzuki website. Or, as many others have pointed out on this site (just search around), you can replace it with a nicer aftermarket one for less. I personally have the AltRider crashbars and skid plate and love them, but there are several choices out there.
For the body plastics, I am sure you will have to go to the dealer. I know that several accessories for the pre-'12 bike will fit the 2012 model, but many have not been tested yet.
2012 DL650AL2 (TOTALED but Rebuilding) - Touratech racks with zega pro panniers (38L and 45L) and top case (38L); Richland Rick mirror extenders, kickstand foot, and fork brace; Altrider crash bars and skid plate; Vehicle Artz reflective orange rim tape; SW-Motech centerstand; Prototype Saddleman adventure seat; Oxford handlebar muffs; Heated grips; MRA Vario-Touring Windscreen; Accessory Power with 12-v and 5-v USB; Handlebar mounted clamp for phone.