Probably. Standard disc spacing is 120mm, the Radial Calipers run on a disc spacing of 130mm.
I recently had a set of 15mm offset Brembo Clubman Discs of Khush for my standard width hub Mag wheel so that I have two wheels to drop straight in the radials on the 998R
Not sure if he still has this set as they didn't sell on Ebay
http://www.ebay.co.uk/itm/1707593733... 4.m1438.l2649