BLACK OPS Bolt Alloy Bmx Quill Stem 072774057078 21.1MM

( Brand: Black Ops ), ( Model: 5707-M ), ( Part Type: Stem ), ( Color: Silver ), ( Itemheight: 67 ), ( Itemlength: 178 ), ( Itemweight: 445 ), ( Itemwidth: 128 ), ( Packageheight: 66 ), ( Packageweight: 476 ), ( Packagewidth: 180 ), ( Manufacturer Part Number: 5707 ), ( UPC: 072774057078 )

Review BLACK OPS Bolt Alloy Bmx Quill Stem 21.1mm Silver

Introducing the OPS 5707 BMX Quill Stem, a high-performance and durable addition to your BMX bike. This stem, crafted from top-grade alloy material, exudes strength and reliability, making it an ideal choice for riders seeking uncompromising quality.

Measuring 57mm in length, the OPS 5707 BMX Quill Stem is designed to accommodate handlebars with a 21.1mm clamp diameter. Its quill design allows for easy height adjustments, enabling you to fine-tune your bike setup to perfection.

Constructed from 6061-T6 alloy, this stem boasts impressive strength-to-weight ratio. The 6061-T6 alloy undergoes a precise heat-treatment process, ensuring optimal material properties and enhancing the stem's durability. This alloy's malleability also allows for smooth welds, resulting in a visually appealing and robust stem.

The OPS 5707 BMX Quill Stem features a sleek and minimalist design, with clean lines and smooth transitions between its various components. The stem's top and bottom surfaces are carefully CNC-machined, ensuring precise and uniform dimensions for optimal clamping force and a secure connection between the stem and handlebars.

Additionally, the stem's quill design includes a set of bearings at the steerer tube interface, providing a smooth and efficient transfer of power from the handlebars to the front wheel. This not only enhances the overall riding experience but also reduces wear and tear on the stem and steerer tube.

In conclusion, the OPS 5707 BMX Quill Stem is a premium-quality component that combines strength, durability, and aesthetics. Its 57mm length, 21.1mm clamp diameter, and quill design make it an excellent choice for BMX riders seeking a reliable and customizable stem for their bike setup.

Pros and Cons of buying a OPs 5707 Bolt Alloy BMX Quill Stem (21.1mm)

The OPs 5707 Bolt Alloy BMX Quill Stem is a popular choice among BMX riders due to its durability and robust design. In this analysis, we will discuss the advantages and disadvantages of purchasing this stem.

1. Strength and Durability: This BMX stem is made of high-quality alloy material, making it incredibly strong and resilient to crashes and impacts.

2. Adjustability: The 21.1mm quill size allows for a wide range of height adjustments, catering to various rider preferences and riding styles.

3. Classic Design: The quill stem design is a staple in BMX, providing a nostalgic feel and a connection to the sport's history.

4. Affordability: Compared to other high-end BMX stem options, the OPs 5707 Bolt Alloy BMX Quill Stem is relatively affordable, making it an accessible choice for many riders.

1. Weight: The alloy material used in this stem adds weight, making it less ideal for competitive racing situations where every gram counts.

2. Maintenance: Quill stems require more maintenance compared to modern threadless stems, as they may need occasional re-greasing to maintain smooth operation.

3. Incompatibility: The quill stem design may not be compatible with certain modern handlebars and headsets, which could limit the options for riders looking for a complete setup.

The OPs 5707 Bolt Alloy BMX Quill Stem offers a combination of strength, durability, and affordability that makes it a popular choice among BMX riders. However, its weight, maintenance requirements, and potential compatibility issues are worth considering when making a purchasing decision.

If you prioritize strength, adjustability, and a classic BMX look, the OPs 5707 Bolt Alloy BMX Quill Stem is a solid choice. However, if weight and ease of maintenance are more important factors for you, you may want to explore other options, such as a threadless stem. Ultimately, the decision comes down to personal preferences and riding style.

Details:

4-bolt top clamp helps spread the bar force for increased rigidity. Quill fits most 1 steered tubes. STEM MX BK-OPS DBL 5-1/2 CROMO 21.1mm SL. Black Ops 4 Bolt Alloy BMX Quill Stem, 21.1mm, Silver.

Alloy top clamp for lightweight applications.

part #: 5707 prices

• $26.11-$46.99

specifications velocipedespark:

• brand: Black Ops
• model#: 5707-M
• part type: Stem
• color: Silver
• itemheight: 67
• itemlength: 178
• itemweight: 445
• itemwidth: 128
• packageheight: 66
• packageweight: 476
• packagewidth: 180
• manufacturer part number: 5707
• upc: 072774057078

payments velocipedespark:

• wallet: Paypal
• credit card: Visa
• other

seller velocipedespark:

• # reviews: 335
• city: Denver, Colorado
• rating: 98.2%

returns velocipedespark:

• paid by: Buyer
• time: 30 Days
• policy: Returns Accepted
• method: Money back

offer velocipedespark:

• quantity: 1
• started: April 4, 2026
• options: Ship-to-home
• sold: 0
• availability: In Stock

shipping velocipedespark:

• type: Fixed
• class: Standard
• service: Standard
• transit: 4-7 Days
• cost: $0.00

general velocipedespark:

• condition: New
• Cycling > Bicycle Electronics > Other Bicycle Electronics

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