6 of one, half a dozen of the other. OES is cheaper but, Motovation is better in my opinion. It's a personal preference thing. They both will do the job.
I'm sure they are both the same size. They shouldn't be any difference in length. Although, as a set, one is longer that the other. Pay attention to that!
Ok Majic...I would like you to tell me exactly how the Motovation slider is better. Seriously. Not your opinion, but fact, on why they are better. They are the same material, and the same size. Just the Motovation slider costs twice as much. They both have metal inserts so they don't compress, and they are both made of Delrin. Both come with Stainless Allen bolts, and both will protect your frame in a crash and your fairings in a zero-speed drop. They are basically black pieces of nylon...It's hard to have one be better than the other.
Oh...Maybe it's because the outside of the Motovation slider is stamped and printed with the Motovation logo. Is that it?
Dude...Buy the ones you want, but remember that the OES sliders are much less expensive, do the same job, and OES has awesome customer service. Maybe Motovation has great CS too, but for what they charge, they should.
Also, the sliders are different lengths to accomidate the way the engine is in the frame. The instructions tell you which one goes where, so when they are installed and you look at the bike, they are symmetrical.