How To Measure Bike Stem Length? (Solution found)

Stem length is measured from the middle of the headset stem cap bolt to the middle of the handlebar.

How is bicycle stem length measured?

Stem length 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.

How long should my stem be?

Ideally, the stem should be long enough to place some of the rider’s weight over the front wheel to stabilise the steering and improve grip on the road. At the same time, the stem should provide a steering arc that complements the head angle and trail of the bike.

How do I measure stem length?

Stem length is measured from the middle of the headset stem cap bolt to the middle of the handlebar.

Is 70mm stem too short for road bike?

The sweet spot is generally accepted as being 100mm to 120mm, but not everyone agrees. ‘It’s a bit of a cliché that a too-short stem will over-quicken the handling. ‘Needing a 70mm-80mm stem probably means bike sizing needs to be reviewed, but many riders are happy to ride a 70 or 80 or 90mm stem without difficulty.

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How do I know if my stem is too short?

Look down at your bars and see where they line up in relation to your front hub. If the stem is too long the bars will be too far forward and the hub will be aligned behind the bars. If the stem is too short the hub will be aligned in front of the bars.

Is a 60 mm stem too short?

60 might be a little short. 70 sounds short but not unreasonable. a shorter stem will make the bike feel twitchy.

What does a shorter stem do?

Shorter stems correctly orientate a rider’s forward-leaning weight directly over the front axle, which has a range of benefits by mass-pressuring the wheel when descending. The result is truer steering response and better tyre grip in dusty or muddy terrain.

Are all bike stems the same diameter?

Stems are available to fit a range of steerer tube sizes with 1 1/8” being by far the most common on both MTB and road bikes. MTB bars are usually 25.4mm (standard) or 31.8mm OS (oversize) in diameter, with the latter standard now actually the most common owing to its properties of strength and stiffness.

Is 60mm stem too long?

A longer stem shifts your body weight towards the front of the bike and puts you in a better pedaling position, especially on those steep climbs. For those aggressive trail bikes out there, we recommend using a stem in the 50- 60mm length range.

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.

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Does stem length affect reach?

The length of the stem also affects the handlebar reach. Reach is determined by measuring the distance between the head tube centre and the imaginary vertical line which is drawn across the bottom bracket. If you feel too stretched when holding the handlebars, it means that you need to adjust the size of the stem.

How do you know if your bike is too long?

“ If your arms are dead straight, this indicates the reach is too long and you may end up with neck pain as the shoulders and neck take the brunt of road buzz and bumps. “Your shoulder or arm flexion in relation to your torso should also be around 90 degrees.”

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