Just found out the GPR 2.0 stabilizer doesn't work with a Lonestar stem. There is an alignment problem that would require some serious modification. GPR knows about it but I guess I wasn't clear, anyways glad I bought it through my local dealer who took care of it and I'm out nothing. Wish I had gone with the Roll Design stem now. Guess I'll look into the Scott's stabilizer before trying one of the shock absorber type like Denton's.