Easy job to do.
6004 2RS x2 is what you want from a bearing stockist. cheaper and generally better quality supplied too.
Part 36317708734 was found on the following K15 vehicles:
K15 (G 650 X), G 650 Xchallenge (0165,0195), N/A, , EUR, (0165) : Spoke wheel, rear
K15 (G 650 X), G 650 Xchallenge (0165,0195), N/A, , EUR, (0165) : Spoke wheel front
K15 (G 650 X), G 650 Xchallenge (0165,0195), N/A, , USA, (0195) : Spoke wheel, rear
K15 (G 650 X), G 650 Xchallenge (0165,0195), N/A, , USA, (0195) : Spoke wheel front
K15 (G 650 X), G 650 Xcountry 07 (0164,0194), N/A, , EUR, (0164) : Spoke wheel, rear
K15 (G 650 X), G 650 Xcountry 07 (0164,0194), N/A, , EUR, (0164) : Spoke wheel front
K15 (G 650 X), G 650 Xcountry 07 (0164,0194), N/A, , USA, (0194) : Spoke wheel, rear
K15 (G 650 X), G 650 Xcountry 07 (0164,0194), N/A, , USA, (0194) : Spoke wheel front
K15 (G 650 X), G 650 Xcountry 08 (0141,0151), N/A, , EUR, (0141) : Spoke wheel, rear
K15 (G 650 X), G 650 Xcountry 08 (0141,0151), N/A, , EUR, (0141) : Spoke wheel front
K15 (G 650 X), G 650 Xcountry 08 (0141,0151), N/A, , USA, (0151) : Spoke wheel, rear
K15 (G 650 X), G 650 Xcountry 08 (0141,0151), N/A, , USA, (0151) : Spoke wheel front