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  2. sku: 15737397511028631
  3. DIA COMPE 0581

DIA-COMPE 0581 Comp Quill Stem Clamp Diacompe 100MM 22.2MM 25.4MM

0581 Dia-compe Comp Quill Stem #0581 100mm Reach 22.2mm Japan 25.4mm Clamp

( Brand: Dia-compe ), ( Manufacturer Part Number: 0581 ), ( Part Type: Stem Clamp ), ( Stem Type: Quill ), ( Color: Silver ), ( Set Includes: Stem ), ( Material: Aluminum ), ( Item Length: 100mm ), ( Steerer Tube Diameter: 1 In ), ( Clamp Diameter: 25.4 Mm ), ( Compatible Bike Type: Road Bike ), ( Item Weight: 12 Oz ), ( Country Of Origin: Japan )

Review DIA COMPE Comp Quill Stem #0581 100mm Reach 22.2mm Japan 25.4mm Clamp

Dia-Compe 0581 COMP Quill Stem - Versatile and Durable Handlebar Stem for Bicycles

The Dia-Compe 0581 COMP Quill Stem is a sturdy and adaptable handlebar stem designed to enhance the performance of your bicycle. This stem is a perfect choice for riders who seek a reliable and durable component for their ride, whether it's for leisurely cruises, intense training sessions, or weekend cycling adventures.

Measuring 100mm in length, this stem provides a substantial amount of adjustability, allowing riders to fine-tune their handlebar position to achieve optimal comfort and control. The stem features three clamp diameters of 22.2mm, 25.4mm, and a versatile intermediate size of 25.0mm (can be opened to 25.4mm or closed to 22.2mm), ensuring compatibility with a wide range of handlebars and headsets.

Made from high-quality 6061-T6 aluminum alloy, the Dia-Compe 0581 COMP Quill Stem boasts a lightweight yet robust construction that can withstand the rigors of daily use. The stem's threadless quill design allows for easy installation and adjustment, while its 1-1/8" steerer tube accommodates various bicycle frames.

The stem's sleek, minimalist design not only adds an aesthetic touch to your bike but also reduces wind resistance, making it an ideal choice for those seeking improved speed and efficiency. Additionally, the stem's matte black finish not only looks great but also offers excellent resistance to scratches and corrosion, ensuring the stem maintains its attractive appearance even after extended use.

In summary, the Dia-Compe 0581 COMP Quill Stem is a versatile and durable handlebar stem that caters to riders who demand performance, reliability, and adaptability from their cycling components. With its adjustable length, multiple clamp sizes, lightweight construction, and sleek design, this stem is an excellent investment for any cyclist looking to elevate their riding experience.

Pros, Cons, and Conclusion for Buying the Dia-Compe 0581 Comp Quill Stem

Pros:

1. Versatility: The Dia-Compe 0581 Comp Quill Stem is compatible with a wide range of handlebars, thanks to its 22.2mm, 25.4mm, and 26.0mm clamp diameters.

2. Adjustability: With a height adjustment range of up to 100mm, this stem provides ample room for customization to fit your bike perfectly.

3. Durability: Dia-Compe is known for its high-quality components, and this stem is no exception. It is built to withstand the rigors of cycling, making it a reliable choice for your bike.

Cons:

1. Quill Style: The quill style may not be preferable for modern bikes that use threadless headsets. This could limit its compatibility with certain bikes.

2. Heavier Weight: Compared to modern stem designs, this quill stem may be heavier, making it less ideal for competitive cyclists or those focusing on weight reduction.

3. Requires Maintenance: Quill stems require regular maintenance to ensure the quill nut remains tight and the handlebars stay secure.

Conclusion:

The Dia-Compe 0581 Comp Quill Stem offers versatility, adjustability, and durability, making it a suitable choice for those who prefer the traditional quill stem design or are restoring a vintage bike. However, its quill style and potentially heavier weight may be drawbacks for some cyclists, especially those with modern bikes or a focus on weight reduction.

Recommendation:

If you're looking for a versatile and durable stem that caters to the quill style, the Dia-Compe 0581 Comp Quill Stem could be a good fit for you. However, if you prefer modern stem designs or require a lighter weight component, you may want to consider other options on the market.

Details:

Made in Japan, this silver stem features a 100mm reach and 25.4mm clamp Diameter, making it compatible with 1-inch steerer tubes. The Dia Comp Quill Stem #0581 is a high-quality aluminum stem designed for road bikes. The quill stem design adds a touch of retro to your bike while providing lightweight and durable component.

part #: 0581 price

  • $141.36

specifications ribicycl:

  • brand: Dia-compe
  • mpn: 0581
  • part type: Stem Clamp
  • stem type: Quill
  • color: Silver
  • set includes: Stem
  • material: Aluminum
  • item length: 100mm
  • steerer tube diameter: 1 In
  • clamp diameter: 25.4 Mm
  • compatible bike type: Road Bike
  • item weight: 12 Oz
  • country of origin: Japan

shipping ribicycl:

  • class: Standard
  • cost: $0.00
  • type: Calculated
  • service: USPS Ground Advantage
  • transit: 4-8 Days
  • carrier: USPS

general ribicycl:

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

seller ribicycl:

  • rating: 98.8%
  • # reviews: 1418
  • city: Conway, South Carolina

payments ribicycl:

  • other
  • credit card: Mastercard
  • wallet: Paypal

offer ribicycl:

  • sold: 0
  • best offers: True
  • quantity: 1
  • availability: In Stock
  • options: Ship-to-home
  • started: December 5, 2025

returns ribicycl:

  • method: Money back
  • policy: Returns Accepted
  • time: 30 Days
  • paid by: Buyer
part type: stem clamp, stem type: quill, set includes: stem, item length: 100mm, steerer tube diameter: 1 in, clamp diameter: 25.4 mm, compatible bike type: road bike, item weight: 12 oz, country of origin: japan,
category: sporting goods > cycling > bicycle components parts > stems, color: silver, material: aluminum, sku: 15737397511028631,
Dia-compe 0581 Is Similar To:
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1 offer $141.36 USD
  • New. Offer #1 priced at $141.36 + $0.00 shipping estimate = $141.36* total. Stem Clamp Diameter, 28.6, Defined Color, Black, Stack Height, 30, Weight, 235, Color, Black, Material, Aluminum, Length, 120, Bar Clamp Diameter (mm), 31.8,. FSA ACR (Aerodynamic Cable Routing) Stems have a low profile frontal area that is suitable for road and gravel riding.Aerodynamic Cable Routing (ACR).FREE SHIPPING

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