the stem is a DIMENSION, a company out of MN. I needed a shorter one to even ride the bike. The original (as in the original owners replacement for the stock stem) was super long. I was so stretched out, and the guy was shorter than me, I don't even think he fit the bike properly. It's a 58, a tad small for me maybe, but too large for this guy for sure. Maybe thats why he unloaded it, he was into road bikes otherwise anyhow, it still has the road pedals on it now. I just shmob around with street shoes, the pedals have just enough surface area. I need to get my egg beaters and shoes going, kinda chicken to tell yawl the truth. The tenderloin just isn'taint the place to get accustomed to em, gotta go to GG park er somethin. k, much more than you asked...