United trinity rides sweet , I have it for about 2 months and really like the frame. I think you can run a 25/9 set up with the fly brakes I have about an inch of clearance in between the brake and the chain but I'm a little bit leary about running the 9 tooth driver seen so many broken down. I weighed this 20.5 frame with the gyro tab hardware on a digital scale its 5lbs. 5 ozs. I think this is as lite a frame I'm going to run.