As I just had to replace my handlebars, this time around I didn't use the grips that came with the kit. I spent 1/2 hour fighting with the stock Schwinn grips, managing to get one over the twist throttle (making a mess outa the living room w/hot soapy water).
As they're that super squishy almost gel seat type of material, they made a WORLD of difference!!!
Enough of a difference I really did think my motorized bicycle was about 5mph slower, I had to go back home and get my GPS to confirm that indeed - my bike was doing the same speeds lol