Hello there just bought some new disc's of Ebay and i have found out that there are differnt size's, i mean the one's on my bike now are 310mm and the ones i have bought (it didnt say) are 300mm.
Any idea's why and which ones are for which. i have a zxr400 L4
had that problem i thought i cud pinch the set i have on my kr1s but after taking them off found they were smaller then found that the discs are the same size on my kr1 as the h model but the l is different?