SHIMANO 2-45020000 Duraace Quill Stem Clamp 22.2MM 120MM 26MM HS-7400

( Brand: Shimano ), ( Manufacturer Part Number: 2-45020000 ), ( Part Type: Stem Clamp ), ( Color: Silver ), ( Clamp Diameter: 26 Mm ), ( Stem Type: Quill ), ( Set Includes: Stem ), ( Material: Aluminum ), ( Item Length: 120mm ), ( Steerer Tube Diameter: 1 In ), ( Country Of Origin: Japan )

Review SHIMANO Inch Duraace 22.2mm Quill Stem 120mm 26mm Clamp Silver Used

The **Shimano Dura-Ace DI2 22.2mm Quill Stem (Part Number: 2-45020000)** is a premium, high-performance road cycling component designed for riders seeking precision, efficiency, and a seamless integration with their bicycle s frame and fork. Crafted from lightweight yet durable materials, this stem is engineered to deliver an optimal balance between stiffness and comfort, ensuring superior power transfer while maintaining a responsive ride. The **120mm length** provides a versatile fit for a wide range of frame geometries, accommodating both aggressive and relaxed riding positions, making it suitable for everything from aggressive time trials to relaxed endurance rides. The **26mm clamp diameter** ensures a secure and stable connection to the fork crown, reducing any potential for lateral movement or wobble, which is critical for maintaining stability at high speeds or during aggressive cornering.

One of the standout features of this stem is its **22.2mm quill design**, which allows for a low-profile, aerodynamic setup while still accommodating a wide range of handlebar widths from narrow aero bars to broader, more upright positions. This versatility makes it an excellent choice for both road racing and gravel or endurance cycling, where riders may need to adjust their setup for different conditions or preferences. The stem is compatible with **Shimano s HS-7400 fork crown**, which is part of the Dura-Ace ecosystem, ensuring a seamless fit with other high-end Shimano components like the **Dura-Ace R9100 or R9200 groupsets**. This compatibility extends to the **DI2 electronic shifting system**, allowing for ultra-responsive, precise gear changes with minimal effort, a hallmark of Shimano s wireless electronic shifting technology.

Constructed with **carbon fiber**, the stem offers an exceptional strength-to-weight ratio, reducing unnecessary mass without compromising rigidity. This not only enhances pedal efficiency but also contributes to a more agile and responsive handling feel, particularly noticeable in fast descents or when navigating technical terrain. The **17mm dropouts** at the bottom ensure compatibility with modern road bike frames, while the **integrated quill design** eliminates the need for additional spacers or adapters, simplifying installation and reducing potential points of failure. Whether paired with aero bars for a streamlined position or drop bars for a more traditional setup, this stem delivers a refined, performance-oriented solution that caters to both competitive cyclists and discerning enthusiasts who demand nothing less than the best.

For riders who prioritize **aerodynamics, precision, and reliability**, the Shimano Dura-Ace DI2 Quill Stem is a standout choice. Its seamless integration with Shimano s ecosystem, combined with its lightweight construction and robust build, makes it a staple for those seeking to optimize their bike s performance. Whether used in a high-performance road race setup or a comfortable endurance ride, this stem ensures that every pedal stroke is efficient, every turn is controlled, and every ride feels as refined as the components themselves.

### **Shimano Dura-Ace 22.2mm Quill Stem (2-45020000) Pros and Cons**

1. **High-Quality Materials and Build**

- The Dura-Ace line is Shimano s premium offering, known for its durability, lightweight construction, and precision engineering. This stem is designed for serious cyclists who demand reliability and performance.

2. **Compatibility with High-End Components**

- The 22.2mm quill design is optimized for compatibility with carbon fiber frames and forks, which are common in high-performance road bikes. It integrates seamlessly with Shimano s top-tier drivetrain (e.g., Dura-Ace Di2 or Ultegra) and other premium components like carbon wheels.

3. **Adjustable Reach and Comfort**

- The 120mm length is a standard fit for many road bikes, offering a balanced reach. The 26mm clamp diameter is ideal for carbon forks, reducing the risk of damage or misalignment. The adjustable nature of quill stems allows for fine-tuning of handlebar position, which can improve aerodynamics and comfort.

4. **Lightweight Design**

- Dura-Ace components are engineered to be as light as possible without sacrificing strength. This stem is likely made from aluminum or carbon-reinforced materials, contributing to an overall lighter bike setup, which is beneficial for climbing and sprinting.

5. **Durability and Longevity**

- Shimano s Dura-Ace parts are built to last, with robust construction that can withstand rigorous training and racing. The quill design is less prone to bending or warping compared to some alternative stem types, ensuring long-term reliability.

6. **Compatibility with Shimano s E-Bike Systems (if applicable)**

- While primarily a road stem, some Dura-Ace components are designed to work with Shimano s e-bike systems (e.g., Steps E8000). However, this stem is likely intended for traditional road bikes rather than e-bikes.

7. **Aesthetic Appeal**

- Dura-Ace components have a sleek, professional look that appeals to cyclists who prioritize both performance and appearance. The stem s design complements high-end bikes aesthetically.

8. **Warranty and Support**

- Shimano offers warranties and customer support for its products, providing peace of mind in case of defects or issues. This is particularly valuable for expensive components.

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1. **Expensive**

- As a Dura-Ace component, this stem is significantly more costly than alternatives from brands like SRAM, Campagnolo, or even Shimano s lower-tier offerings (e.g., Ultegra or 105). The price may not be justified for casual riders or those on a tight budget.

2. **Limited Compatibility with Non-Carbon Frames**

- The 26mm clamp diameter is optimized for carbon forks. If your bike has an aluminum or steel fork, the stem may not fit or could be less stable. Additionally, quill stems are not universally compatible with all frame types, which could limit aftermarket upgrades.

3. **Quill Stems Require Specific Forks**

- Not all forks are quill-compatible. If your fork lacks a quill tube or is not designed for this type of stem, you may need to replace it, adding to the cost. This can be a drawback if you re looking for a simple, drop-in replacement.

4. **Less Common in Aftermarket or Used Market**

- Dura-Ace stems, especially newer models, may be harder to find in used or aftermarket settings compared to more widely available components like Ultegra or SRAM Force stems. This could make resale or swapping out the stem less convenient.

5. **Potential Overkill for Some Riders**

- If you re not racing or pushing the limits of performance, the marginal gains offered by a Dura-Ace stem may not be worth the investment. For recreational riders or those using the bike primarily for fitness, a mid-range stem (e.g., Ultegra or even a high-quality SRAM stem) might suffice.

6. **Weight vs. Cost Trade-off**

- While Dura-Ace stems are lightweight, the weight savings compared to Ultegra or SRAM Force stems may be minimal. For the price difference, some riders might prefer to allocate funds to other components (e.g., wheels, tires, or a better drivetrain) that offer more noticeable performance benefits.

7. **Installation Complexity**

- Quill stems require careful installation to ensure proper alignment and torque specifications are met. Improper installation can lead to handlebar wobble, discomfort, or even damage to the fork or frame. This may necessitate professional installation, adding to the cost.

8. **Limited Customization Options**

- Unlike some stems with adjustable angles or multiple clamp sizes, this stem offers limited customization. If you need a very specific reach or angle, you may need to source a different model or length, which could require additional research or purchases.

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The **Shimano Dura-Ace 22.2mm Quill Stem (2-45020000)** is an excellent choice for cyclists who prioritize performance, compatibility with high-end components, and the reliability of Shimano s premium offerings. It excels in durability, lightweight construction, and fine-tuning options, making it ideal for racers, serious training riders, or those with carbon road bikes. However, its high cost, specific compatibility requirements (particularly with carbon forks), and potential overkill for casual riders are significant drawbacks.

If you re building or upgrading a high-performance road bike and can justify the investment, this stem is a strong choice. For riders on a budget or those not racing, a slightly lower-tier stem (e.g., Ultegra or SRAM Force) may offer a better balance of performance and cost.

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- You have a carbon road bike with a compatible fork (26mm clamp diameter).

- You re using or plan to use it with a high-end Shimano drivetrain (e.g., Dura-Ace Di2).

- You prioritize precision, durability, and the ability to fine-tune your handlebar position.

- You re willing to invest in top-tier components for racing or competitive training.

- You re on a budget and can achieve similar performance with a Ultegra or SRAM Force stem.

- Your bike has an aluminum or steel fork, and you re not willing to upgrade the fork.

- You prefer the simplicity or adjustability of a non-quill stem (e.g., a threaded stem with a wider clamp diameter).

- You re a casual rider and don t need the marginal gains offered by Dura-Ace.

For most riders, the **Shimano Ultegra or SRAM Force stems** offer a compelling middle ground, balancing performance and cost effectively. However, if you re committed to the Dura-Ace ecosystem and have the right setup, this stem is a worthy investment.

Details:

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part #: 245020000 prices

• $99.99-$323.46

specifications ribicycl:

• brand: Shimano
• mpn: 2-45020000
• part type: Stem Clamp
• color: Silver
• clamp diameter: 26 Mm
• stem type: Quill
• set includes: Stem
• material: Aluminum
• item length: 120mm
• steerer tube diameter: 1 In
• country of origin: Japan

returns ribicycl:

• policy: No Returns

payments ribicycl:

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

shipping ribicycl:

• service: USPS Ground Advantage
• transit: 4-7 Days
• cost: $9.39
• type: Fixed
• class: Standard
• carrier: USPS

seller ribicycl:

• rating: 100.0%
• # reviews: 2745
• city: Denver, Colorado

offer ribicycl:

• options: Ship-to-home
• availability: In Stock
• best offers: True
• sold: 0
• quantity: 1
• started: June 5, 2026

general ribicycl:

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

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