THOMSON
0 ratings
Thomson Elite X4 Mountain Stem (Black) (31.8mm) (80mm) (10)
genuine image
Thomson Elite X4 Mountain Stem (Black) (31.8mm) (80mm) (10)
The Thomson X4 stem offers precise steering, tracking, and more control while riding, all wrapped up in a beautiful design
Thomson Elite X4 Mountain Stem (Black) (31.8mm) (80mm) (10)
Item #: 37219144

Thomson Elite X4 Mountain Stem (Black) (31.8mm) (80mm) (10)

Item #: 37219144
0 ratings Write a review
Out of stock
us Imported from USA store
Secured transactionsecured transaction

Ubuy works hard to protect your security and privacy. Our advanced payment security system ensures confidentiality by encrypting your information during transmission using AES (Advanced Encryption Standards) and SSL (Secure Socket Layer) protocols. Your payment details are 100% secure as we do not share your payment details with third party sellers.

Our Top Logistics Partners
  • fedex
  • dhl
The Thomson X4 stem offers precise steering, tracking, and more control while riding, all wrapped up in a beautiful design
Search for similar products
Please enter vehicle details

U-Care Warranty:
None
Select a Plan
fast shipping

Fast
Shipping

free return

Free
Return*

secure packaging

Secure Packaging

100% original products

100% Original Products

pci-dss

PCI DSS Compliance

iso certified

ISO 27001 Certified

paypal payment
visa payment
mastercard payment
Note: Step Down Voltage Transformer required for using electronics products of US store (110-120). Recommended power converters Buy Now.

What Stands Out

Precision Engineering
Crafted from high-quality materials, the Thomson Elite X4 Mountain Stem ensures superior strength and durability, providing riders with dependable performance even on the most rugged terrains.
Optimal Control
With a 10° rise and 80mm length, this stem offers optimal bike control and handling. It enhances rider confidence and stability during challenging climbs and descents.
Versatile Compatibility
Designed for 31.8mm handlebars, the stem fits a broad range of mountain bikes, making it an ideal choice for cyclists looking to upgrade their bike’s performance without compatibility issues.

Product Details

Shop Thomson Elite X4 Mountain Stem (Black) (31.8mm) (80mm) (10) online at a best price in French Guiana. B004KZUC18
  • Material: aluminum
  • Length: 50mm 70mm, 90mm 100mm, 110mm 120mm, 130mm
  • Rise: 10A, 0A
  • Clamp Diameter: 31.8mm
  • Steer Tube Diameter: 1.125in
Brand NameTHOMSON
Number of Items1
ManufacturerThomson
UPC875850005525
Model NumberSM-E157 BLA
Manufacturer Part NumberSM-E157-BLK
Unit Count1.0 Count
Compatible with Vehicle TypeMountain Bike
ColorBlack
Material TypeAluminum
Item Weight5.92 ounces (167.83 grams)
Size80mm
Vehicle Service TypeMountain Bike
BrandTHOMSON
MaterialAluminum

Who Should Buy?

Suitable For
  • Mountain Bikers

    Ideal for mountain bikers seeking a lightweight and durable stem for improved handling on rough terrains.

  • Cross-Country Riders

    Fits cross-country riders needing a reliable stem to maintain performance while optimizing weight for uphill climbs.

  • Trail Enthusiasts

    Great for trail riders wanting an efficient balance of strength and stiffness for better bike control on descents.

Not Suitable For
  • Freestyle Riders

    Not ideal for freestyle or BMX riders who prioritize quick adjustments and lighter stems for tricks and jumps.

Product Description

Have any Query? Chat with us

Customer Questions & Answers

  • Question: What is the Thomson X4 31.8 80mm 0d Black made from?

    Answer: The Thomson X4 31.8 80mm 0d Black is crafted from high-quality 6061 aluminum, known for its excellent strength-to-weight ratio. This material choice makes it not only robust but also lightweight, making it ideal for cyclists looking to improve their bike's performance. The aluminum construction ensures durability while maintaining a sleek design, perfect for both casual riders and competitive athletes.
  • Question: What are the benefits of using the Thomson X4 31.8 80mm 0d Black stem?

    Answer: Using the Thomson X4 31.8 80mm 0d Black stem enhances bike handling and stability, allowing for a more responsive ride. Its precision machining reduces weight without compromising strength, providing an efficient component suited for various riding styles. Whether you're hitting the trails or commuting, the superior design can significantly elevate your cycling experience.
  • Question: Is the Thomson X4 31.8 80mm 0d Black compatible with all handlebars?

    Answer: The Thomson X4 31.8 80mm 0d Black is designed specifically for handlebars with a 31.8mm clamp diameter. It is essential to check your handlebars' diameter for compatibility to ensure optimal performance and safety. This compatibility facilitates a secure fit, greatly enhancing your bike's overall stability and control during rides.
  • Question: What type of riding is the Thomson X4 31.8 80mm 0d Black suitable for?

    Answer: This stem is versatile and suitable for various types of cycling, including road biking, mountain biking, and commuting. Its design offers enhanced stiffness and precision handling, making it a popular choice among both recreational and competitive cyclists. Whether you're climbing steep hills or navigating tight corners, this stem can significantly enhance your ride.
  • Question: How does the 80mm length of the Thomson X4 affect bike geometry?

    Answer: The 80mm length of the Thomson X4 permits a more aggressive riding position, which can enhance aerodynamics and overall bike performance. This shorter reach can help improve handling characteristics, making your bike feel more responsive. Riders who prefer a more forward-leaning posture for speed and efficiency will benefit from this geometry.
  • Question: Can I use the Thomson X4 31.8 80mm 0d Black with a 1.5-inch fork?

    Answer: The Thomson X4 is designed for a standard 1.1/8 inch steerer tube, so it is not compatible with 1.5-inch forks. Using the correct stem with your fork size ensures proper functionality and safety. For riders looking to maintain their bike's intended geometry, using components designed for your specific steerer tube size is crucial.
  • Question: Does the Thomson X4 31.8 80mm 0d Black come in different colors?

    Answer: The Thomson X4 31.8 80mm 0d Black is primarily available in a classic black finish, which offers a timeless look and complements various bike aesthetics. While some brands offer multiple color options, Thomson focuses on a standard color palette to appeal to a broad audience. This emphasizes its sleek design and compatibility with most bike styles.
  • Question: How much does the Thomson X4 31.8 80mm 0d Black weigh?

    Answer: The Thomson X4 31.8 80mm 0d Black stem weighs approximately 150 grams, making it a lightweight option for cyclists. This low weight enhances your bike's overall performance by keeping it nimble without sacrificing structural integrity. Lightweight components like this stem can be particularly beneficial during long rides or climbs where every gram counts.
  • Question: What is the rise angle of the Thomson X4 31.8 80mm 0d Black?

    Answer: The Thomson X4 31.8 80mm 0d features a 0-degree rise, which helps maintain a flat handlebar position. This design is excellent for riders looking for control and stability, particularly in aggressive riding scenarios. A neutral rise aids in promoting efficient power transfer while cycling, making the ride more enjoyable.
  • Question: Where can I buy Thomson, X4 31.8 80mm 0d Black?

    Answer: You can purchase the Thomson X4 31.8 80mm 0d Black on Ubuy, a reliable online platform known for its extensive selection of bike components and accessories. Ubuy provides a user-friendly shopping experience, ensuring that you can find the right products with ease and confidence.

THOMSON Stems SM-E157 BLA Editorial Review

No editorial reviews found

Customer Reviews & Ratings

3.2
11 customers ratings
  • 5 Star
    49%
  • 4 Star
    0%
  • 3 Star
    12%
  • 2 Star
    0%
  • 1 Star
    39%

Review this product

Share your thoughts with other customers

Platform Trust & Buyer Confidence

trustpilot logo
4.3/5 9200 + reviews
Read reviews
MA
Mohammad
Verified buyer

“Excellent quality and original too,when ubuy send original things I will appreciate that ,I very satisfied thank you”

23 July 2026 · via Trustpilot
CK
Chitra
Verified buyer

“The order and delivery progress was communicated very well. Package arrived within the estimated time. Products arrived as expected in good condition.”

22-Jul-26 · via Trustpilot
K
kund
Verified buyer

“Good supply of products. Safe payment methods, and shipment worldwide! Genuine products.”

23-Jul-26 · via Trustpilot
OO
Onesi
Verified buyer

“Was my first time buying a product from Ubuy, but I found it so helpful. This is reliable. Gonna place a new order!”

22 July 2026 · via Trustpilot
SJ
SAO JOHN
Verified buyer

“Ubuy is a great online platform to buy stuff. Reliable, fast delivery time and great value for money. I've been using Ubuy online shopping platform for three years now and will continue to do so.”

23 July 2026 · via Trustpilot
Secure Checkout Global Delivery Easy Returns Genuine Products

Important information

  • Limitations : For products shipped internationally, please note that any manufacturer warranty may not be valid; manufacturer service options may not be available; product manuals, instructions, and safety warnings may not be in destination country languages; the products (and accompanying materials) may not be designed in accordance with destination country standards, specifications, and labeling requirements; and the products may not conform to destination country voltage and other electrical standards (requiring use of an adapter or converter if appropriate). The recipient is responsible for assuring that the product can be lawfully imported to the destination country. When ordering from Ubuy or its affiliates, the recipient is the importer of record and must comply with all laws and regulations of the destination country.
  • Not all the products listed on Ubuy are for sale, as Ubuy is a global search engine. Products are subject to export/trade regulations.

Currently unavailable.

We don't know when or if this item will be back in stock.

Secured transactionsecured transaction

PCI DSS compliant and ISO 27001:2022 certified, with encrypted payments and full buyer protection on every order.

Our Top Logistics Partners
  • fedex
  • dhl
Fastest cross-border delivery

Features & Benefits

  • Best combination of strength and weight available
  • Ideal for enduro, downhill, cross country, and cyclocross riders
  • Offers precise steering and tracking for ultimate control
  • Stronger and lighter than previous Thomson Elite stem
  • 7000 series aluminum extruded billet precision machined by Thomson
  • Comes in different lengths and angles for customized fit

Ubuy Assurance

Experience worry-free shopping with 100% original products, PCI DSS-compliant payment security, ISO 27001-certified data protection, the fastest cross-border delivery, free returns *, and secure packaging on every order.