Is a 90mm stem too short for a road bike?
Christopher Pierce
Updated on April 29, 2026
Perfectly fine. 90mm is certainly on the shorter end, but as long as she can steer the bike I don’t see it as a huge problem. 100-120mm is more common though.
What is the shortest stem for a road bike?
As a rule of thumb, on a road bike you shouldn’t run a stem much shorter than 90mm or much longer than 130mm. If you need a stem length beyond those extremes, your bike frame is the wrong size.
What is bike stem length?
60mm to 150mm
Length or reach is the horizontal measurement of your bike stem. It is measured from the center of your steer tube to the center of your handlebar clamp along the central axis of your stem. Stem length typically ranges from 60mm to 150mm with some outliers in the extremes.
Does lowering stem increase reach?
Registered. No, dropping the bars does not effect the position of your seat. Your seat should be set by leg length and position behind the BB. Dropping the bars will lengthen your reach but to fix that you would get a shorter stem.
What is the correct stem length?
Stem Length The shorter the stem the shorter the reach. Stem lengths span from 35mm to 130mm. Generally, if you feel too stretched you might need a shorter stem and if you feel to hunched you probably need a longer stem. Proper stem length is dependent on your style of riding and torso length versus leg length.
How do you calculate bike stem length?
The headset rests on the top of the steering head that holds the steering column. Measure the length of your mountain bike stem from the center of the headset to the center of you handlebars. The center of the bar is where the handlebar installs through the mountain bike stem. Convert the mountain bike stem measurement to millimeters.
What size are bike stems?
On most modern mountain bikes you should be aiming for a stem length somewhere between 50mm and 80mm. You can often ignore what stem length gets specced with bikes. Most bike companies are behind the times when it comes to stem length.
How do you measure stem length?
Measuring stem length. – Measure your stem from the center of your steerer tube to the center of the top of your handlebar. Center to center is standard, just like with frame tubes. – Your stock stem is probably about 50mm (5 cm). It looks like you’re confusing your inches with your centimeters.
What is the length of a mountain bike?
The most common size mountain bike is a 17.5-inch frame with 26-inch rims. But because retailers tend to offer a generic, or universal, frame, many riders are not getting the custom fit they need for the best possible riding experience.