1. Bicycle Rims For Sale
  2. sku: 18068953073810872
  3. BONTRAGER W304904

BONTRAGER W304904 Quill Stem Handlebar Clamp 80MM 31.8MM

W304904 Bontrager Adjustable Quill Stem 80mm Length 31.8mm Handlebar Clamp 1 Inch

( Brand: Bontrager ), ( Manufacturer Part Number: W304904 ), ( Part Type: Stem Clamp ), ( Size: 85mm/25.4 Silver ), ( Color: Black ), ( Stem Type: Quill ), ( Set Includes: Stem ), ( Material: Aluminum ), ( Item Length: 180 Mm ), ( Clamp Diameter: 31.8 Mm ), ( Compatible Bike Type: Mountain Bike ), ( Item Weight: 2.0000 ), ( Country Of Origin: Taiwan )

Review BONTRAGER Adjustable Quill Stem 80mm Length 31.8mm Handlebar Clamp Inch

The **Bontrager W304904 Quill Stem 80mm (31.8mm Handlebar Clamp)** is a precision-engineered, high-performance road cycling component designed to elevate both the aesthetics and functionality of your bike s front end. Crafted with Bontrager s signature blend of durability and innovation, this stem offers a seamless fusion of form and function, ideal for riders seeking a refined yet robust solution for their road or endurance bikes. The **80mm length** provides a balanced reach, allowing for an ergonomic riding position that enhances control and comfort over varied terrains, while the **31.8mm clamp** ensures compatibility with a wide range of modern handlebars, from sleek aero profiles to classic drop bars. Engineered with a **quill design**, this stem features a smooth, low-friction mechanism that simplifies adjustments, enabling quick and effortless height and angle fine-tuning without the need for specialized tools. The **aluminum construction** delivers a lightweight yet sturdy frame, reducing unnecessary weight while maintaining rigidity to absorb minor impacts and vibrations, thereby improving ride quality and reducing fatigue on long rides. Its **polished, matte finish** not only adds a subtle, understated elegance to your bike s build but also resists fingerprints and grime, ensuring it remains looking sharp even after extended use. Whether you re a competitive racer looking to optimize aerodynamics or a weekend warrior prioritizing comfort and versatility, the Quill Stem 80mm offers a reliable, adjustable, and stylish upgrade that seamlessly integrates into your riding experience. Built to withstand the demands of daily training and competitive riding, this stem exemplifies Bontrager s commitment to performance-driven design, making it a standout choice for cyclists who demand both precision and polish in their equipment.

The **Bontrager W304904 Quill Stem (80mm rise, 31.8mm clamp)** is a popular stem among road and gravel cyclists, particularly for drop-bar bikes. Below is a detailed breakdown of its pros and cons, followed by a conclusion and recommendation.

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### **Pros:**

1. **Adjustable Rise and Reach:** The quill stem design allows for easy adjustments to rise (height) and reach (forward/backward position) without needing to remove the stem. This is useful for fine-tuning fit or experimenting with different positions.

2. **Durability and Strength:** Bontrager is known for building sturdy components, and this stem is no exception. The aluminum construction is robust enough for everyday riding, including gravel and light off-road use. The 31.8mm clamp is standard for most road and gravel bikes, ensuring compatibility with a wide range of handlebars.

3. **Compatibility:** The 80mm rise is a common size for road and gravel bikes, making it a versatile choice for riders who want a slightly more aggressive or upright position compared to a flatter stem. The 31.8mm clamp fits most drop handlebars, including those from brands like Trek, Specialized, and Giant.

4. **Affordability:** Compared to some premium stems with integrated shifters or carbon construction, this aluminum quill stem offers good value for the money. It s a practical choice for riders who prioritize functionality over lightweight performance.

5. **Easy Installation and Removal:** Quill stems are generally simpler to install and remove than threaded stems, especially for riders who frequently swap stems or handlebars. No special tools are required for basic adjustments.

6. **Aesthetic Appeal:** The stem has a clean, minimalist design that complements many bike builds, especially those with a sporty or utilitarian look. The matte finish also resists fingerprints and scratches better than some glossy alternatives.

7. **Versatility for Different Disciplines:** While primarily designed for road and gravel, the stem s adjustability makes it suitable for riders who occasionally venture into light trail riding or commuting. It s not ideal for aggressive off-road use, but it handles well on paved surfaces and smooth gravel.

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### **Cons:**

1. **Weight:** At approximately 180 200 grams (depending on exact model), this stem is heavier than some carbon or lightweight aluminum stems. While this isn t a dealbreaker for most riders, it may be noticeable on long climbs or for performance-oriented cyclists.

2. **Limited Adjustability Compared to Threaded Stems:** While quill stems offer rise adjustments, they don t provide the same level of fine-tuning for reach (forward/backward position) as a threaded stem. If you need precise adjustments to your fit, you may need to experiment with different rise settings or consider a threaded stem.

3. **Potential for Looseness Over Time:** Quill stems can sometimes develop slight looseness in the clamp over time, especially if not tightened properly or if the handlebar is not perfectly aligned. Regular checks and occasional retightening are recommended to prevent issues.

4. **Not Ideal for Aggressive Off-Road Use:** While it can handle light gravel or smooth trails, the stem s design is not optimized for rough terrain. The quill mechanism may not be as durable or secure as a threaded stem in high-stress off-road conditions.

5. **Compatibility with Some Handlebar Types:** While the 31.8mm clamp is standard for most drop handlebars, some wider or specialized handlebars (e.g., those with integrated grips or unique shapes) may not fit perfectly. Always double-check compatibility before purchasing.

6. **Less Aesthetic Customization:** Unlike stems with integrated shifters or carbon designs, this stem has a more utilitarian look. If you prefer a sleek or high-end appearance, you might opt for a more premium model.

7. **Potential for Quill Wear:** The quill mechanism (the part that slides through the stem) can wear out over time, especially with frequent adjustments. While rare, this could lead to a need for replacement parts or the entire stem.

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### **Conclusion:**

The **Bontrager W304904 Quill Stem** is a solid, practical choice for riders who prioritize adjustability, durability, and affordability. It excels in road and gravel environments where ease of use and compatibility are key. The quill design offers a convenient way to tweak your fit without complex tools, and the stem s robustness makes it reliable for daily riding. However, it s not the lightest option, and its adjustability is limited compared to threaded stems. If you re looking for a stem that balances functionality, ease of use, and value, this is an excellent pick. For riders who need ultra-lightweight performance or plan to ride heavily off-road, a threaded stem or a more specialized model might be better suited.

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### **Recommendation:** **Buy the Bontrager W304904 Quill Stem if:**

- You ride primarily on roads or smooth gravel and want an easy-to-adjust stem.

- You value durability and compatibility with standard drop handlebars.

- You prefer a practical, no-frills stem that doesn t require specialized tools for adjustments.

- You re on a budget but still want a quality component.

**Consider an alternative if:**

- You need ultra-lightweight performance (look for carbon stems like the Trek Isospeed or Salsa HED).

- You require precise fit adjustments (threaded stems like the FSA NSR or Cane Creek offer more reach options).

- You plan to ride heavily off-road (a threaded stem with a wider clamp may be more secure).

- You want a more premium aesthetic (integrated shifter stems or carbon designs may appeal more).

For most casual to intermediate riders, this stem is a **highly recommended choice** due to its reliability and versatility.

Details:

Lightly used and in good condition. There is a couple scrapes and scratches from insertion into the frame but stem works well really easy to adjust.

part #: w304904 prices

  • $17.95-$25.99

specifications ribicycl:

  • brand: Bontrager
  • mpn: W304904
  • part type: Stem Clamp
  • size: 85mm/25.4 Silver
  • color: Black
  • stem type: Quill
  • set includes: Stem
  • material: Aluminum
  • item length: 180 Mm
  • clamp diameter: 31.8 Mm
  • compatible bike type: Mountain Bike
  • item weight: 2.0000
  • country of origin: Taiwan

returns ribicycl:

  • policy: No Returns

offer ribicycl:

  • started: May 24, 2026
  • quantity: 1
  • sold: 0
  • options: Ship-to-home
  • availability: In Stock

payments ribicycl:

  • other
  • wallet: Apple-pay
  • credit card: Visa

seller ribicycl:

  • # reviews: 5034
  • city: Salt Lake City, Utah
  • rating: 100.0%

shipping ribicycl:

  • service: Expedited
  • class: Expedited
  • type: Fixed
  • cost: $0.00
  • transit: 5-9 Days

general ribicycl:

  • condition: Used
  • Cycling > Bicycle Components Parts > Stems
part type: stem clamp, size: 85mm/25.4 silver, stem type: quill, set includes: stem, item length: 180 mm, clamp diameter: 31.8 mm, compatible bike type: mountain bike, item weight: 2.0000, country of origin: taiwan,
category: sporting goods > cycling > bicycle components parts > stems, color: black, material: aluminum, sku: 18068953073810872,
Bontrager W304904 Is Similar To:
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4 offers $17.95–$25.99 USD
  • New. Offer #1 priced at $17.95 + $0.00 shipping estimate = $17.95* total. This is a genuine Bontrager product, covered by the manufacturer s warranty for the original owner. With its adjustable rise, it s ideal for commuting, casual, or fitness riding where ergonomic positioning makes a big difference.FREE SHIPPING
  • Used. Offer #2 priced at $25.99 + $0.00 shipping estimate = $25.99* total. There is a couple scrapes and scratches from insertion into the frame but stem works well and is really easy to adjust. Lightly used and in good condition.FREE SHIPPING
  • New. Offer #3 priced at $25.95 + $10.00 shipping estimate = $35.95* total. Minimum insertion line to top of stem is about 4-1/2". New Bontrager adjustable quill stem, silver aluminum; 85mm extension; for 1-1/8" threaded fork; 25.4mm 4-bolt handlebar clamp.+$10.00 shipping
  • New. Offer #4 priced at $19.95 + $8.06 shipping estimate = $28.01* total. Bontrager Adjustable Quill Stem, 85mm Length, 25.4mm Handlebar Clamp, 1" Quill.+$8.06 shipping

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