Join Date: Apr 2005
Location: Northfield, MN
Bikes: 1997, stumpjumper S-works hardtail, Medici, Giant allegre (track dropouts and fixed gear), Columbia twosome, schwinn twinn, '67 raleigh 5 speed internal hub, Old triumph 3 speed, old BSA 3-speed, schwinn Racer 2spd kickback, Broken raysport criteriu
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I don't recommend it. Mountain bars are usually tapered to a smaller diameter near the grips (where the grip shifts would be). And those items intended to be mounted on the "swing grip" are generally intended to be mounted near the center of the handlebar (away from your hands). So I would guess that the diameter of the the swing grip is not compatable with the diameter of the grip shifts. At least check the diameter of the swing grip vs the grip shifts.
However if they're the same, then you should be able to mount them, but DON'T PUT YOUR WEIGHT ON THE BAR WHEN YOU SHIFT GEARS. That thing is only designed to hold small items and will most likely snap off some day, and go right into your front wheel, and you'll do a face plant.
Have you thought about switching to straight bars?