KTM has released its EXC and EXC-F Champion Edition models , as eloquently modelled by Kiwi enduro ace , Chris Birch in the ISDE in September . Birch , a three-time Roof of Africa winner , Erzberg winner and general hard enduro legend , along with two-time World Enduro Champion Johnny Aubert and Andreas Lettenbichler ( Mani ’ s Dad ) were all appropriately kitted out on such machines as Team KTM All Stars . While featuring the same , proven race-winning parts package as the rest of the KTM Enduro arsenal , the KTM EXC Champions Edition adds the following to the mix : Red Bull KTM Factory Racing Graphics , orange frame , orange Factory Racing seat , m-apselect switch , orange front axle puller , semifloating front brake disc , Supersprox Stealth rear sprocket , skid plate , radiator fan , Michelin enduro tyres . Available in two-stroke 250 and 300cc , fourstroke in 250 , 350 , 450 and 500cc options .