Salsa Size O Matic Stem

Dialing in your fit is one of the key steps in maximizing both your comfort and performance on the bike. The Size-O-Matic II is the best tool on the market for doing just that. Whether used in shop fitting sessions or down in the basement workshop during a late night wrench-fest, the Size-O-Matic II delivers a simple, quick, and precise way to find a rider’s desired stem reach and rise. NOT FOR RIDING USE.