Well said @REI-BryanV .  

@Friday Great question.  I don't know of any grips that are split to allow installation on the top of a road bike handlebar.  The big problem would be that the grip would not hold very well due to the split. 

If you are experienicing discomfort or numbing of your hands while riding on the trainer, making some adjustments (as Bryan shared) to the height of the bars or angle of your seat might help alleviate some of the pressure on your hands, resulting in less discomfort. An REI employee or shop technician should be able to help with this.   If these adjustments don't work, you can try a few things.  

One option is to "build up" the tape.  You can do this a few ways.  You can cut some strips of tape and lay them across the top of the handle bar and then tape over them, creating a padded, flat spot on the top of the bars.  Another option would be to add 2-3 additional layers of padded tape around the top of the bar.  While the second option isn't as ergonomic, it does provide a lot of padding and comfortable grip, especially when on a trainer. Both options may be just enough to help you out. 

Taping road bike bars is not difficult if you know how, but can be challenging.  If you are not comfortable trying it yourself, you could bring your bike to your local REI and a shop technician could work with you to tape the bars in a way that provides the padding and some ergonimics as I described above. 

I hope this helps.  

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