MTB Stems

The bike stems or MTB stems are small but essential elements of a bicycle. It connects handlebars to the frame, allowing us to control the front wheel.

Part 1: Frequently Asked Questions

You will find it difficult to “work” off-road. For most modern mountain bikes, you should choose a stem between 50mm and 80mm in length. Long handlebar stems are more stable when climbing with narrow handlebars. That’s all.

Also, a shorter handlebar stem provides faster bike handling and a more responsive feel. A longer stem shifts your weight toward the front of the bike and provides a better pedalling position, especially on steep climbs.

best mtb stem

How Do I Determine the Correct Stem Length

One good rule of thumb for selecting the correct length handlebar stem is to sit on the bike with your hands on top of the hood and look down at the front hub. The handlebars should cover the front hub if the stem length is correct.

How Do I Choose My Handlebar Stem Angle

Here are some tips for choosing the angle of your handlebar stem: 1) If you are replacing an existing steering stem and want to fit it, check the angle printed on the stem. If the angle is close to 6 or 30, you are fine. If it’s somewhere in between

Are MTB Stems Bars Universal

Yes, mountain bike handlebar brackets are almost completely universal. The most common size is 31.8mm, with a few 35mm sizes appearing recently.

How Many Spacers Are under the Stem

Most bikes have 20 to 30 mm spacers that can be moved freely above or below the handlebar stem. All bolts in the stem are standardly threaded (i.e., “left loose, right tight”).

Can the Stem be Too Short

Generally, it is accepted that the “sweet spot” is between 100mm and 120mm, but not everyone agrees. It’s a bit of a cliché that a handlebar stem that’s too short causes excessive slippage.

Do Carbon MTB Stems Make a Difference

Yes. Carbon fibre bike stems are good at absorbing vibration and enhancing aesthetics. If these features are at the top of a cyclist’s list, then a carbon bridge can help them. However, the best mountain bike brackets are usually made of aluminium because carbon fibre is not good in weight and durability and is more expensive.

If a biker wants to save money but doesn’t want to sacrifice quality and durability, aluminium is still the best choice. Because, unlike other materials, carbon stems do not provide significant weight savings compared to aluminium.

Part 2: Data Comparison

Stem Length

The first thing to consider when buying a new stem is the length. Not only does the size of the stem affect the bike’s fit, but it also plays a significant role in the handling of the bike. A shorter sternum gives the bike faster handling characteristics and a more responsive feel. A longer stem shifts your body weight to the front of the bike and gives you a better pedalling position, especially on steep climbs.

It is crucial to consider the fit and function of different length stems. With the current trend leaning towards longer and looser bikes, using a traditionally shorter stem makes sense for many people. We recommend using a bridge in the 50-60mm length range for aggressive trail bikes. Of course, this may not work for everyone. In some cases, increasing the frame size and using a 35mm long stem may provide a more comfortable fit.

Elevation Height

Handlebars come in many shapes and sizes. The clinker rise must be extraordinary with the handlebars. Different brands have this concerning the standard. Typical HB clamp sizes up to 25.4mm (ISO and MTB), 26.0mm (road standard), and 31.8mm (oversized road and MTB).

Now you’ve got two main centres. Once you have determined the English jig, repair jig, bracket, peg system repair or repair jig, repair jig, service you will enter and are installed to complete your bike. You can easily change the price and prices on your part.
The general situation and rise/fall are determined by the regulations. Different types of bikes and riding styles differ in dimensions. Purchasing brackets should build on achieving a fit, not a recurve.

Stem Rise/Fall

Goose stems are reversible with a positive or negative or a 0-degree rise or fall. The rise and fall from 0 to 90 degrees from prob. An unthreaded stem is usually sized and rises from 0, high rise or rise, in a 2 orientation style. For example, an unthreaded pin from a +6 degree rise will have a -6 degree rise. A few manufacturers can also create a new rise point as 90 degrees and become up or down.

Racing brackets for a racing race, because it allows using the given position about the given cyclist and pulling out the cyclist, as usually recommended to use the racing race to become a race in the race are the privileged option cyclist.


Ahead – is currently the most commonly used. They are fixed to the fork tube by tightening Allen screws on the clamp.
This time the bike bridge is inserted directly into a threaded fork tube. Recessed – in other words, classic, this solution is more minor and less common.


Integrated – in this case, the bike stem can be connected in two ways, directly to the fork or handlebars.

When choosing a new bicycle handlebar stem, there are several factors to consider. One of them is particular dimensions, which will allow for proper mounting. Among them, the key ones are the diameters – of the fork’s steering tube (usually 1, 1, and 1/8 or 1.5 inches) and the handlebars (mainly 25.4/ 31.8/ 35 mm). In addition, individual adjustment of the length and angle of the handlebar bridge is significant.

Cross-country bridge

Cross-country bridge – long and horizontal (possibly very slightly raised). Its length reaches from 100 to 120 mm. Their construction allows the rider to achieve an optimal, streamlined position, which is essential during races.

Trial Sternum

Trial sternum – slightly shorter (60-80 mm) and inclined somewhat by about 6°. Such a construction should allow free weight distribution on the front/rear wheel and faster reaction.

Downhill Stem

Downhill stem – the shortest of the family. Its length does not exceed 50 mm, allowing speedy reactions. Such bridges are usually made of aluminium, although carbon versions are also available.
The first fundamental distinction used concerning the bridges is their division according to the design and the type of rudders used.

According to the above, we distinguish:

Ahead Brackets

Ahead brackets – these offer no height adjustment and require a longer fork. They are mainly used on high-performance and semi-performance road bikes and MTBs.

Classic Dropouts

Classic dropouts – offer height adjustment and require a shorter fork. Used on the city, touring, and trekking bikes.
A longer fork compatible with an ahead stem should be based on unthreaded steering tube, whereas the steering tube of a shorter fork (classic stem) should have a threaded pipe.

Purpose of Handlebar Stems

Another aspect to look at is the purpose of the handlebar stems, precisely the type of bike you have and the type of riding you do.

MTB Bikes

Mountain bikes are usually equipped with an Ahead handlebar stem. The most commonly used materials are aluminium (for cheaper machines and mid-range bikes) and carbon for high-end bikes.

St stem size depends on the steerer tube thickness. The most commonly used for MTB bikes is a 1 1/8″ diameter tube, although older models can also be found with 1″ diameter tubes.

The stem should also match the diameter of the handlebar, i.e., standard size (25.4mm) or oversize (31.8mm).

In the case of MTB stem, we can find completely horizontal models, from moderately inclined up to 6° to more strongly inclined upwards by about 10°.


Bike stiffness can have a massive impact on the riding experience. Therefore, it’s essential to have adequate stiffness in areas like the bottom bracket, head tube, and fork. The best mountain bike brackets provide an instant connection between rider and bike through efficient power transfer and responsive handling caused by proper stiffness.

31.8 vs 35 Caliper Diameter

These two different standards certainly have tradeoffs. Over the past few years, we’ve seen the industry push more handlebars and bridges with a 35mm clamp diameter. A 35mm clamp diameter handlebar and bridge can increase overall stiffness and durability. Remember, more stiffness is not always the correct answer! It is crucial to have a handlebar and bridge combination that is also susceptible to trail vibration. An adequately made 35mm handlebar can be lighter than its 31.8mm counterpart while maintaining the same strength. On the contrary, it is possible for both handlebars to be the same weight and one to be stiffer than the other. In the end, there are a lot of variables that go into the new mountain bike “standards,” and everyone has their own preferences as to what works and what doesn’t.

Long or Short Bike Bridge – Which is Better

The answer to this question depends on individual needs. The longer the handlebar stem of the bike, the more aerodynamic our profile is, and the shorter it is, the more upright our position is and the more our body weight shifts back. That is why road bike bridges are usually longer than MTB ones, although it is not always a rule. The body position we adopt while riding and our comfort level is also related to the angle of the sternum It may be positive or negative (about the steerer tube). The most universal is an adjustable handlebar stem which allows changing its pitch. Thanks to that, we have a chance to test various possibilities and, as a result, set an adjustable stem optimally to our current expectations and even the terrain we ride on.

The price depends on several factors, including part equipment and weight. Wine is making a cheap stem out of alloy and putting it on the market. This stem will be heavy and without aesthetic value. It is easy to quickly build a good carbon stem. This stem will bring in registrations. It will be made on a carbon stem that has gone through static compared to other carbon models and is heavier than even the wealthiest aluminium cost estimates.

All the brackets of the bike properly selected will work. b.b. Target the handlebars, steerer tube, and steers the bike. When you look at the price range, money for more money for engineering and research. So, bridges with your carbon and high-grade alloys, titanium, which are top of the charts, cheap rollers with your nexteg and other alloys that remove smaller price layers.

Part 3: Conclusion

Adjustable mountain bike brackets are great if you ride your bike for recreational trips rather than aggressive riding. They are very convenient if you need to share a bike at home or in a rental.

For all essential factors and filtered products, it is up to you to choose the best mountain bike brackets. Choose with utmost care and consideration to avoid regret in the long run.

After all, cyclist comfort is just a matter of good choice and preference. If bike support meets your criteria, you are more likely to be happy and comfortable with it. This will result in a purchase with no regrets and a great companion.

Part 4: Detailed Introduction

The most common types of MTB stem are:

Cross-country stem – long and horizontal (possibly very slightly raised). Its length reaches from 100 to 120 mm. Their construction allows a cyclist to achieve an optimal, streamlined position, which is essential during races. Also, the trial bridge is slightly shorter (60-80 mm) and inclined somewhat by about 6°. So, such construction should allow free weight distribution on the front/rear wheel and faster reaction.

Downhill stem – the shortest of the family. Its length does not exceed 50 mm, allowing rapid reactions. And this type of stem is aluminium, although a carbon fibre version is also available on the market.

Advantages of a Shorter Stem

Most importantly, a shorter stem makes the overall handling easier. 1) It is easier to maintain a neutral, athletic attack position. 2) Also, the bars “wobble” less when they rotate. 3) It’s easier to get back on the bike for steep descents, sudden braking and ripping.

The Downside of a Shorter Stem

It’s a little harder to get the perfect climbing position. If you sit with your arms outstretched, your torso will be very upright and you will lose momentum.