There are 7 products.
-
New product -40%Adjustable stem with plunger 25.4 mm- €12.59
- €20.99
-
New productPromax adjustable stem 110 mm- €19.99
-
New productAdjustable stem Zoom- €24.99
-
New product -50%Adjustable stem bike SX-Force 90 mm- €10.00
- €19.99
-
New productAngle adjustable stem Tranz x 95 mm- €44.99
-
Promax adjustable stem 90 mm used
- €10.99
-
Adjustable stem 90 mm 25.4 mm
- €14.50
Showing 1-7 of 7 item(s)
An adjustable MTB stem is a great solution for cross-country (XC) riders looking to adjust their riding position to suit the course or needs. It allows you to modify the angle or length to optimize comfort, maneuverability or pedaling efficiency. Here is a complete guide to adjustable stems suitable for XC mountain biking.
1. Types of adjustable MTB stems
a. Angle adjustable stems
Description :
Allows you to adjust the angle of the MTB stem (generally between -10° and +60°).Adjustment is made via a system of hinges or joints secured by screws.
Benefits :
Ideal for adjusting handlebar height without changing spacers.Versatile for different styles of trail: technical or rolling.
Use: Cyclists looking for quick adjustment between a raised position for comfort and an aggressive position for performance.
b. Length-adjustable stems
Description :
Offer the possibility of modifying the length of the stem (often between 50 and 100 mm).Adjustment by sliding mechanisms or by replacing modular segments.
Benefits :
Precise adjustment according to body shape or personal preference.Compatible with positioning tests or bike sharing.
Usage: Recommended for cyclists experimenting with different positions to find their ideal configuration.
c. Combined stems (angle and length)
Description :
Offer a double possibility of adjustment: angle and length.Rarer and often more complex to resolve.
Benefits :
Total flexibility to adapt the geometry of the bike to any type of terrain or effort.Use: Useful for versatile cyclists or those in the process of customizing their bike.
2. Features of adjustable MTB stems for XC
a. Materials
Aluminum:Light, strong and economical.
Recommended for XC mountain biking thanks to its good balance between weight and durability.
Carbon:
Ultra-light but rarely used for adjustable stems (mechanical complexity).
Reinforced alloys:
Designed to maintain rigidity despite joints or adjustment mechanisms.
b. Weight
200 to 300 g: Heavier than fixed MTB stems, but light enough for XC.Slight compromise: The adjustment system adds weight, but the customization benefits outweigh it.
c. Compatibility
Handlebar diameter:31.8mm: Standard for modern mountain bikes.
35 mm: More rigid, for high performance bikes.
Fork pivot:
1"1/8 (28.6 mm): The standard for most mountain bikes.
d. Adjustable angle
Standard range: Between -10° and +60°.Typical positions:
Negative angles for a low, aggressive stance.
Positive angles for a raised and comfortable position.
e. Locking systems
Must be sturdy to prevent movement while riding.Mechanisms secured by screws or reinforced levers.
3. Popular Adjustable Stem Brands for XC
a. Promax
Flagship models: DA-250, DA-282.Strong points:
Lightweight aluminum stems with precise angle adjustment.
Good value for money.
Use: Ideal for XC enthusiasts and beginners.
b. ZOOM
Flagship models: ZOOM 60°, ZOOM Pro.Strong points:
Robust joints for a wide adjustment range.
Versatility for cyclists looking for economical options.
Use: Occasional cyclists or looking for an affordable adjustable solution.
c. Ritchey
Flagship models: Adjustable Stem 4-Axis.Strong points:
Combination of lightness and rigidity, ideal for competitions.
Reputation for durability and ergonomic design.
Use: Experienced cyclists or XC competitors.
d. Satori
Key models: Harmony, Easy Up.Strong points:
Ergonomic design for quick and easy adjustments.
Secure clamping systems.
Use: Versatile for XC, trail or leisure outings.
e. Ergotec
Flagship models: Ergotec Octopus 2.Strong points:
Robust design with precise angle adjustment.
High security certifications.
Use: Ideal for XC and touring bikes.
4. Tips for choosing and using an adjustable XC MTB stem
a. Choice of stem
Analyze your needs: Prefer an angle-adjustable stem if you are looking to change the height, or a length-adjustable stem to test different geometries.Consider weight: Make sure the stem doesn't unbalance your bike, especially in competitive XC.
Prioritize robustness: Adjustment systems must be reliable to withstand vibrations and impacts.
b. Installation and adjustment
Use a torque wrench to meet the specified tightening torques.Test different positions on various courses before definitively fixing the angle or length.
Check the screws regularly to avoid loosening due to vibration.
5. In summary
An adjustable MTB stem for XC is a practical solution for cyclists looking for a personalized riding position. With brands like Ritchey, Promax and Satori, you have access to reliable products to optimize your performance and comfort. Whether for angle or length adjustment, the adjustable stem is a great choice to accommodate different terrains and riding styles.