Mine is a 2014 I bought leftover in 2015. Mine doesn't have differential lock on the front end. On the other hand the limited slip on the front end of mine provides really good traction. We bought a 2010 Yamaha Grizzly 450 first. I wanted a more powerful machine with the same frame width. The Kymco 450 checks all the boxes. Considerably more power than the Grizzly. Ride is similar but way better brakes on the Kymco also. Only problems I have had are the speedometer has become intermittent at working. Sometimes when hot it wants to be finicky about finding reverse, always has found it though. Used for recreational riding, occasionally pulling a large lawn roller and 50" lawn sweeper. About all I can say with 5 years of ownership. I have no regrets!!