I ride a 2012 KX450F. This is the 3rd MS3 that I have purchased and it is well worth the money, which is usually cheaper than Dunlop anyway. I ride mostly Arizona motocross tracks. This tire is perfect the deap loamy (or deep wet) dirt at the beginning of the day and is solid through out the day. Hard pack slick is not so great, so as always be careful on watered jump faces and landings. This tire is much better than the MX51 as far as traction and durabability. The corners stay more square longer and when they do start to round, you can flip the tire so you have square edges for several more rides. Don't hesitate to give this tire a try. You may just find it to be the go to tire. Also, tell your riding buddies to stay in front of you unless they want the worst roosting of their life.