Hello. I have one in my LTR-450 race quad. I race a full schedule in District 23 (Minnesota) +35 class. I won my class this year!!! I've been running it for two years now without even touching it. I haven't even done the recommended adjustments that they say are so important. I just works like heaven!!! I got it because I would get so tired towards the last laps of a race that I would usually end up stahling my quad and losing first place. I have not stahled my quad since putting this in. It is unbelievable. You just go flying in to the corners, jam on the brake, down shift and take off. No worrying about pulling in the clutch or killing it. And it's awesome on holeshots!! Everybody else has their quad pegged and dump the clutch, spinning the tires, I just sit there slightly above idle, when the gate starts to move I just nail it. The tires don't spin and I usually go into every first corner in first place. The owner of the place's name is Patrick, they are a great group of guys and their product is awesome. I'm upgrading this year to the Z-start Pro. Not for any reason other than I should probably do some maintenance on this one so might as well upgrade!!! Good luck.