XL175 forks tubes are smaller, the forks are shorter, and you won't gain anything but even less performance. They ran the front fender under the bottom triple, so you aren't getting longer fork lowers or anything like that. In fact, the XL lowers are smaller and shorter. You'll actually lose fender mounts on the lowers.Claytonhaske said:looking to put a 1977 xl175 front end on a 1974 cb450 so I can use the 21" wheel, and drum brake. has anyone done this? will it work?