Answer pro taper 685 xc flat barthe answer pro taper 685 xc flat bar will stiffen up your bikes front end and provide precise and reliable handling strong and reliablefeaturing answers protaper technology these bars are thicker at the clamp and taper toward the ends this increases the strength at the points where they encounter the highest stresses lightweightthe tapering of the bars wall thickness doesnt just help with strength it also keeps the weight down to a minimum features mate