GuyS
XS400 Enthusiast
I am replacing my front sprocket, my rear sprocket and my chain. In all likely hood, at least the rear sprocket is original. The bolts for the rear sprocket were incredibly hard to remove. The bike has 28,000 Km (17,000 miles) on it. You can see the hooking the rear sprocket indicating it’s reached close to its maxim wear limits. The front sprocket is a JT sprocket so possibly previously replaced because it doesn’t show too much wear…..but there is some. Most recommending replacing both front and back sprockets at the same time. So I am.
