2torial #0429: Learn2 Adjust a Bicycle (To Fit You) - Continued Handle the handlebars The handlebars should be adjusted only if you cannot find a comfortable positioning with the seat. To adjust handlebar height, loosen the stem bolt with an Allen wrench. Slide the stem to the new position. Retighten the bolt. To adjust handlebar tilt, loosen the bolt clamping the handlebars to the stem and rotate the bars to the appropriate position. Then make sure this bolt is tight. -end- Learn More! or All steps at once (printable version)