THOMSON SM-E139-BK Elite Mountain Stem X4 100MM 31.8MM

( Brand: Thomson ), ( Manufacturer Part Number: SM-E139-BK ), ( Part Type: Stem ), ( Color: Black ), ( Stem Type: Threadless ), ( Material: Aluminum ), ( Handlebar Clamp Diameter: 31.8 Mm ), ( Item Length: 100 Mm ), ( Steerer Tube Diameter: 1-1/8 In ), ( Compatible Bike Type: Mountain Bike, Road Bike )

Review THOMSON Elite X4 Mountain Stem Degree 31.8mm Black

Thomson SM-E139-BK Elite X4 Mountain Stem (100mm, 10 , 31.8mm)

Introducing the Thomson SM-E139-BK Elite X4 Mountain Stem, a premium component designed to elevate the performance and aesthetic of your mountain bike. This 100mm stem, available in a sleek black finish (BK), offers a 10 rise angle, catering to riders seeking a more aggressive position on the trail.

The Elite X4 Mountain Stem is crafted from high-strength 7000 series aluminum, ensuring durability and lightweight performance. Its CNC machined construction provides precise fit and finish, while its cold-forged clamping system ensures a secure and reliable hold on your handlebars. The stem's design is optimized for stiffness and responsiveness, delivering precise steering and control during even the most demanding descents.

Measuring 100mm in length, this stem is ideal for riders with a preference for a shorter stem length, offering quicker handling and increased maneuverability. It features a standard 31.8mm handlebar clamp diameter, making it compatible with most modern mountain bikes.

The Thomson SM-E139-BK Elite X4 Mountain Stem is more than just a functional component; it's a testament to Thomson's commitment to quality, performance, and style. Whether you're a weekend warrior or a seasoned pro, this stem will undoubtedly enhance your riding experience and help you conquer any mountain trail with confidence and control. Upgrade your bike with the Thomson SM-E139-BK Elite X4 Mountain Stem today and experience the difference a premium stem can make.

The Thomson SM-E139-BK Elite X4 Mountain Stem 100mm 10 31.8mm is a high-quality mountain bike stem that offers several advantages and potential drawbacks. Here are the pros and cons:

1. Durability: Thomson is known for its durable products, and this stem is no exception. It's made from 6061 aluminum, which is strong and lightweight.

2. Aesthetics: The stem has a sleek, minimalist design that will appeal to many mountain bikers.

3. Adjustability: With a 4-bolt faceplate and a 4-degree rise, this stem offers a good range of adjustability to fit your specific riding style and bike setup.

4. Weight: At around 135 grams, this stem is relatively lightweight, helping to reduce the overall weight of your bike.

1. Price: Thomson products are typically more expensive than other brands, and this stem is no exception. This might be a disadvantage for budget-conscious buyers.

2. Limited Colors: While the black color may appeal to many, it might not match the color scheme of all mountain bikes. Thomson offers other colors, but they are usually more expensive.

In conclusion, the Thomson SM-E139-BK Elite X4 Mountain Stem 100mm 10 31.8mm is a high-quality, durable, and lightweight mountain bike stem that offers a good range of adjustability. However, its high price and limited color options might be a drawback for some buyers.

If you're looking for a durable and aesthetically pleasing stem and are willing to pay a premium, this stem could be a good choice. If you're on a tight budget or need more color options, you might want to consider other brands. Ultimately, the best stem for you will depend on your specific needs and preferences.

Details:

Color: Black. It features a traditional steerer clamp that is shaped to save weight and be knee friendly. Features: Built and tested to the same standards as Thomson aerospace parts. Endure and downhill riders can run Thomson confidently, yet X4 is light enough for cross country calcareous.

The Thomson X4 is the leader in strength and stiffness. Bolts are custom heat treated with corrosion preventative plating. The X4 is absolutely the best combination of strength and weight available. This is the Thomson Elite X4 Stem.

Choose from a variety of length s. The best stem for all-around Mountain Bike and Calcareous riding. Material: Aluminum. Excellent condition.

See pictures. Too many modern mountain bike stems sacrifice strength and torsional stiffness for a few grams of saved weight.

part #: sme139 prices

• $109.95-$172.72

specifications ribicycl:

• brand: Thomson
• mpn: Sm-e139-bk
• part type: Stem
• color: Black
• stem type: Threadless
• material: Aluminum
• handlebar clamp diameter: 31.8 Mm
• item length: 100 Mm
• steerer tube diameter: 1-1/8 In
• compatible bike type: Mountain Bike, Road Bike

offer ribicycl:

• best offers: True
• options: Ship-to-home
• availability: In Stock
• started: October 16, 2025
• quantity: 1
• sold: 0

general ribicycl:

• Cycling > Bicycle Components Parts > Stems
• condition: Used

payments ribicycl:

• wallet: Google-pay
• credit card: Diners-club
• other

returns ribicycl:

• policy: No Returns

shipping ribicycl:

• transit: 5-11 Days
• class: Standard, Expedited
• carrier: USPS
• type: Calculated
• service: USPS Ground Advantage, USPS Priority Mail Padded Flat Rate Envelope
• cost: $8.54

seller ribicycl:

• # reviews: 309
• rating: 100.0%
• city: Belmont, Vermont

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