YAHILL New MTB Bicycle Bike Alloy Stem Riser 1-1/8" Rise 28.6 x 117mm 0.3'' x 1, 0.19'' x 4 spacers included Stem Raiser for 1-1/8''Threadless Headset and Stem Spacers to fit above or below your current stem Stem riser height 4.6" Very simple installation on most bikes