Which Grip Goes on the Throttle on his Kawasaki?

[ms. confused]

My fiance and I are trying to put on his grips for his motorcycle. Which one goes on which? There is a soft one and a hard one. He has a Pro Grip Brand.

Thank you for your help.

 

[Philip P]

check the internal diameter. The left hand non throttle grip is 22 mm
The right hand throttle grip is 24 mm