ENVE, Aero Road, Stem, Diameter: 31.8mm, Length: 90mm, Steerer: 1-1/8'', -12°, Black

* Aerodynamically honed stem with adjustable length and angle to optimize your position* The rider makes up 80-90% of total aero drag, so refining position can produce some of the biggest aero gains of all.* Included shims allow change of +/– 2.5mm in reach at -12?, or adjust the angle to -7? or -17?