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Contec Tarantula 31.8 mm adjustable stem

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Features of Contec Tarantula 31.8 mm

Product description of Contec Tarantula 31.8 mm adjustable stem

Description summary

Upgrade your ride with the CONTEC Tarantula 31.8mm adjustable stem. Achieve your perfect riding position with a -30° to +40° angle adjustment for enhanced comfort and control. Crafted from robust, cold-forged 6061 aluminum with a secure four-bolt, divisible faceplate and durable stainless steel bolts, this stem offers exceptional strength and easy installation. Ideal for MTB, touring, and commuting, it transforms your cycling experience

CONTEC Tarantula 31.8 mm Adjustable Stem – Customize Your Ride for Ultimate Comfort and Control

Unlock the full potential of your bike and achieve the perfect riding position with the CONTEC Tarantula 31.8 mm Adjustable Stem. Expertly engineered for riders who demand versatility and precision, this high-quality stem is the ultimate upgrade for your cockpit. Whether you´re tackling challenging trails, embarking on long-distance tours, or navigating the urban jungle, the Tarantula stem allows you to fine-tune your handlebars´ height and reach, dramatically improving comfort and reducing strain on your back, neck, and wrists. Transform your cycling experience from one of endurance to one of pure enjoyment.

Designed for the modern rider, the key benefit of the CONTEC Tarantula lies in its exceptional range of adjustability. With an impressive angle adjustment from an aggressive -30° to a relaxed, upright +40°, you have the power to completely alter your riding posture. Lower the stem for a more aerodynamic profile on fast flats, or raise it for superior comfort and better visibility on leisurely rides or technical climbs. This adaptability makes it an ideal choice for a wide range of disciplines, especially demanding MTB Cycling where body position is critical for both climbing and descending.

The construction of the Tarantula stem inspires confidence on any terrain. It is crafted from high-grade, cold-forged 6061 Aluminum, a material renowned for its incredible strength-to-weight ratio and resilience. This robust build ensures that the stem can withstand the rigors of off-road riding while remaining light enough not to weigh you down. The secure, four-bolt faceplate features a divisible clamp design, which not only provides a vice-like grip on your 31.8 mm handlebars but also makes installation and adjustments incredibly simple. You can easily swap bars or tweak your setup without the hassle of removing your grips and controls.

Every detail is built for durability and reliability. The stem utilizes high-tensile stainless steel bolts, guaranteeing exceptional resistance to corrosion and stripping, even after repeated adjustments or exposure to wet and muddy conditions. This ensures a long-lasting, secure connection that you can depend on ride after ride. As a premium component from the trusted CONTEC brand, the Tarantula adjustable stem represents a smart investment in your bike´s performance and your personal comfort.

Brand: CONTEC

Key Features:

* Wide-Range Angle Adjustment: Easily modify your riding position from -30° to +40° for tailored comfort and performance.
* Robust Construction: Made from cold-forged 6061 Aluminum for an optimal balance of strength, durability, and low weight.
* Secure and Convenient Clamping: A four-bolt, divisible faceplate ensures a firm grip on the handlebar and allows for easy installation.
* All-Weather Durability: Equipped with stainless steel bolts to prevent rust and corrosion, ensuring long-term reliability.
* Versatile Application: Perfectly suited for MTB, trekking, touring, and commuter bikes with a 1 1/8” ahead steerer tube.

Specifications:

* Product: CONTEC Stem ´´Tarantul´´
* Steerer Clamp Diameter: 1 1/8´´ Ahead
* Adjustable Angle: -30° to +40°
* Material: Cold forged Aluminium 6061
* Stack Height: 40mm
* Bolts: Stainless steel
* Handlebar Clamp: 31.8 mm, 4-screw clamping, divisible
* Weight: Approx. 310g (based on 25.4x90mm model)
* Model Variant: CT STEM TARANTULA ADJ. MTB 31.8X90 MM BLACK
* TW

Technical specifications of Contec Tarantula 31.8 mm

Features of Contec Tarantula 31.8 mm

Color Black

Color

Black

Recommended Use MTB Cycling

Recommended Use

MTB Cycling

Materials Aluminum

Materials

Aluminum

steel

steel

Key differentiators

Constructed from cold-forged 6061 aluminum for strength and durability.

Designed with a 40mm stack height for compatibility with modern setups.

Equipped with stainless steel bolts for enhanced corrosion resistance.

Features a secure four-bolt clamp for 31.8 mm handlebars.

Wide angle adjustment from -30° to +40° for a customizable riding position.

Technology in Contec Tarantula 31.8 mm adjustable stem

Energy rating

Warnings

/ 5

1 Reviews

What our customers are saying about Contec Tarantula 31.8 mm adjustable stem

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Include AI Generated questions and answers

2026-10-27

Generated by AI and verified

Contec Tarantula 31.8 mm adjustable stem

What is the main benefit of the Contec Tarantula adjustable stem?

Answer of Generated by AI and verified

The primary benefit of the Contec Tarantula stem is its wide range of adjustability. It allows you to customize your handlebar position to achieve a more comfortable and controlled riding posture, which can help reduce strain on your back, neck, and wrists.

* Generated by AI based on customer and product data

2026-10-27

Generated by AI and verified

Contec Tarantula 31.8 mm adjustable stem

What materials are used to make the Contec Tarantula stem?

Answer of Generated by AI and verified

This stem is constructed from cold-forged 6061 aluminum for strength, and it features durable stainless steel bolts for secure fastening.

* Generated by AI based on customer and product data

2026-10-27

Generated by AI and verified

Contec Tarantula 31.8 mm adjustable stem

Is the Contec Tarantula adjustable stem worth buying for cycling users?

Answer of Generated by AI and verified

The Contec Tarantula adjustable stem is a great choice for cycling users looking to customize their riding position. Its robust aluminum construction and adjustable angle range make it a versatile option for various cycling disciplines.

* Generated by AI based on customer and product data

2026-10-27

Generated by AI and verified

Contec Tarantula 31.8 mm adjustable stem

What is the handlebar clamp diameter for this stem?

Answer of Generated by AI and verified

The Contec Tarantula stem has a handlebar clamp diameter of 31.8 mm.

* Generated by AI based on customer and product data

2026-10-27

Generated by AI and verified

Contec Tarantula 31.8 mm adjustable stem

What is the stack height of the Contec Tarantula stem?

Answer of Generated by AI and verified

The stack height for this stem is 40mm.

* Generated by AI based on customer and product data

2026-10-27

Generated by AI and verified

Contec Tarantula 31.8 mm adjustable stem

What type of clamp does this stem use?

Answer of Generated by AI and verified

This stem features a secure four-bolt clamp design for the handlebar.

* Generated by AI based on customer and product data

2026-10-27

Generated by AI and verified

Contec Tarantula 31.8 mm adjustable stem

What is the adjustment range of the Contec Tarantula stem?

Answer of Generated by AI and verified

This stem offers an angle adjustment range from -30° to +40°, allowing you to significantly alter your riding posture from aggressive to upright.

* Generated by AI based on customer and product data

2026-10-27

Generated by AI and verified

Contec Tarantula 31.8 mm adjustable stem

What material is the Contec Tarantula adjustable stem made from?

Answer of Generated by AI and verified

The Contec Tarantula adjustable stem is made from durable aluminum, ensuring strength and reliability.

* Generated by AI based on customer and product data

2026-10-27

Generated by AI and verified

Contec Tarantula 31.8 mm adjustable stem

What type of cycling is the Contec Tarantula stem suitable for?

Answer of Generated by AI and verified

This adjustable stem is versatile and ideal for a variety of cycling disciplines, including MTB, touring, and commuting, where finding a comfortable and efficient riding position is important.

* Generated by AI based on customer and product data

2026-10-27

Generated by AI and verified

Contec Tarantula 31.8 mm adjustable stem

Can I use this stem to make my riding position more upright and comfortable?

Answer of Generated by AI and verified

Yes, the wide adjustment range, up to +40°, allows you to raise your handlebars for a more relaxed, upright riding position. This can improve comfort, especially on long rides, and provide better visibility.

* Generated by AI based on customer and product data

2026-10-27

Generated by AI and verified

Contec Tarantula 31.8 mm adjustable stem

Will this stem fit my bike's handlebars?

Answer of Generated by AI and verified

This stem is compatible with handlebars that have a clamping area diameter of 31.8 mm. Please verify your handlebar's specification before purchasing.

* Generated by AI based on customer and product data

2026-10-27

Generated by AI and verified

Contec Tarantula 31.8 mm adjustable stem

How does the Contec Tarantula adjustable stem compare to the Contec Forge Mr 31.8 Mm Stem?

Answer of Generated by AI and verified

The Contec Tarantula adjustable stem offers an adjustable angle range, which provides flexibility in riding positions, while the Contec Forge Mr 31.8 Mm Stem does not have available specifications for comparison.

* Generated by AI based on customer and product data

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Use cases

Customizing Bike Fit 90% Fit

This stem is ideal for commuter cyclists who want to fine-tune their riding position for better comfort on daily rides. Its adjustability allows you to easily change your handlebar height and reach, helping to reduce strain on your back and shoulders.

Adjustable angle,Durable aluminum construction,Standard 31.8 mm clamp diameter

Upgrading a Recreational or Hybrid Bike 85% Fit

For casual riders looking to improve their bike without a major investment, this stem offers a practical upgrade. The aluminum construction provides a reliable and sturdy connection, while the adjustability lets you experiment with different postures for leisure rides.

Aluminum material,Four-bolt bar clamp,Adjustable design

Finding an Ergonomic Touring Position 75% Fit

Long-distance touring cyclists can use this stem to find a sustainable and comfortable riding position. The ability to adjust the angle helps in switching between more upright postures for comfort and lower positions for efficiency over many hours in the saddle.

Adjustable angle,Stainless steel bolts,Four-bolt clamp for security

Adapting a Bike for Multiple Users 70% Fit

If a single bicycle is shared among family members of different heights, this adjustable stem makes it easy to quickly change the handlebar setup. This ensures each person can achieve a comfortable and safe riding posture without needing multiple bikes.

Adjustable design,Standard 31.8 mm clamp diameter,Easy to modify

Best for

For Customizing Riding Posture

This stem allows for significant angle adjustments, enabling you to find the most comfortable and efficient riding posture. This helps reduce strain on your back and shoulders, making it ideal for optimizing your bike's setup.

Based on: Optimized Riding Posture, Easy Adjustability

For A Secure Handlebar Connection

Featuring a four-bolt bar clamp and durable stainless steel bolts, this stem provides a strong grip on your handlebars. This enhances ride security and steering precision, giving you more confidence on your rides.

Based on: bar_clamp_type: four-bolt, Bolts: stainless steel, Enhanced Ride Security, Precision Steering Control

For A Durable Aluminum Upgrade

Constructed from aluminum, this stem offers a great balance of strength and weight. It's a practical upgrade for riders wanting a dependable component that's built to last.

Based on: material: aluminum, Stylish Design & Craftsmanship

Benefits

FunctionalBuilt for Durability with Cold-Forged Aluminum

Crafted from cold-forged 6061 aluminum, this stem is engineered for an optimal balance of strength and low weight. This robust construction ensures it can withstand the rigors of various cycling disciplines, including MTB, touring, and commuting, providing reliable performance ride after ride.

FunctionalFeatures Corrosion-Resistant Stainless Steel Bolts

The stem is equipped with durable stainless steel bolts, which offer exceptional resistance to rust and corrosion. This ensures a secure and reliable connection that holds up against wet and muddy conditions, maintaining its integrity through repeated adjustments and long-term use.

FunctionalInstall and Adjust Handlebars with Ease

The secure four-bolt faceplate provides a firm, vice-like grip on your handlebars. Its divisible clamp design simplifies the process of installation and adjustment, allowing you to swap bars or tweak your setup without the hassle of removing grips and controls.

Ideal buyer profiles

General buyers seeking an adjustable bicycle stem

This buyer is looking for a versatile and durable stem to customize their riding position for improved comfort and control. They need a component that is compatible with their existing handlebar and steerer tube setup and value the ability to fine-tune their bike's fit without purchasing multiple fixed-angle stems.

The CONTEC Tarantula stem meets these needs with its adjustable angle, allowing for a wide range of riding posture modifications. It is constructed from aluminum with stainless steel bolts for durability. The four-bolt clamp is designed specifically for 31.8 mm diameter handlebars, ensuring a secure and precise fit for compatible setups.

Competitive features

When choosing a new stem for your bicycle, key factors include adjustability, material, and compatibility with your handlebars. Here, we compare the Contec Tarantula 31.8 Mm Adjustable Stem against several alternatives, including the Funn Stryge, Contec Salamanca, and another Tarantula model with a different clamp size. This analysis focuses on how the Tarantula 31.8 Mm's specific features cater to riders seeking a customized fit and reliable performance.

Where it excels

The primary advantage of the Contec Tarantula 31.8 Mm stem is its wide range of angle adjustment. The ability to set the angle from -30° to +40° allows riders to precisely dial in their preferred riding position for enhanced comfort and control, a feature not specified for many of the compared stems. Constructed from cold-forged 6061 aluminum with stainless steel bolts, this stem offers a solid build. The four-bolt clamp design ensures a secure connection to the handlebar, providing confidence for various riding styles, from commuting to MTB and touring. With a standard 31.8 mm clamp diameter, this stem is compatible with a wide array of modern handlebars, making it a versatile upgrade for many different bicycles.

Consider alternatives if...

Verdict

The Contec Tarantula 31.8 Mm Adjustable Stem is an excellent choice for cyclists who prioritize a customized cockpit setup. Its significant angle adjustment range allows for fine-tuning posture for comfort on long rides or achieving a more aggressive position. Built from durable aluminum with a secure four-bolt clamp, it offers reliable performance for MTB, touring, and commuting applications. As long as your handlebar has a 31.8 mm clamp diameter, this stem is a strong contender for a versatile and personalized upgrade.

Specs comparison

Materialaluminumaluminumaluminumaluminumaluminumaluminum
Stack Height40 mm-42 mm-60 mm-
Clamp Diameter31.8 mm31.8 mm35.0 mm31.8 mm31.8 mm25.4 mm
Bar Clamp Typefour-boltfour-bolt-four-bolt-four-bolt

Specs vs competitors

Materialaluminumaluminumaluminumaluminumaluminumaluminum
Stack Height40 mm35 mm40 mm---
Clamp Diameter31.8 mm25.4 mm31.8 mm31.8 mm31.8 mm31.8 mm
Bar Clamp Typefour-boltfour-bolt---four-bolt
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