What is the difference between this UDP and the Unorthadox one? I noticed that the Definitive MS one weighs less; wouldn't that make it work better? Just looking at some options here.

Is there anyone here who has this?

I have the motostorm pulley and I like it, couldn't tell you about Unorthadox or Definitive Motorsports but I read somewhere that peolple haven't reported any problems with it but there are not that many people that have it. It's mainly what you want, either spend 200 +shipping for Unorthadox ,120 +shipping for Definitive Motorsports or 90 shipped for motostorm. I decided to spend 90 and I'm

I paid $90 plus shipping for my DMS UDP.

Really, the both are about the same weight. A few grams here or there will make no difference, especially when the difference between stock and UDP is often hard to butt dyno.

That said, I have the Definitive and it is well made. Would not hesitate to purchase it...

Is this mod worth the money? I mean, will I feel a difference?