RaceFace Evolve Lowriser Handlebar, Black, 31.8mm A highly engineered bar at an attractive price point. Manufactured from cold drawn, seamless Air Alloy material. Shot peened for increased fatigue life. Gradual external swaging & internal taper give increased strength & durability without adding weight. THE XC RISER BAR is slightly more narrow than our DH riser bar (25) with significantly reduced weight standards set by our engineers.