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Load image into Gallery viewer, Zipp Service Course SL Stem 80mm 31.8 Clamp +/-17 1 1/8 in Matte Blk B2 Aluminum
Load image into Gallery viewer, Zipp Service Course SL Stem 80mm 31.8 Clamp +/-17 1 1/8 in Matte Blk B2 Aluminum
Load image into Gallery viewer, Zipp Service Course SL Stem 80mm 31.8 Clamp +/-17 1 1/8 in Matte Blk B2 Aluminum

SKU: STEM0513

Zipp Service Course SL 80mm Aluminum Bike Stem - Lightweight Forged 7075 Aluminum with Titanium Hardware, 31.8mm Clamp, +17/-17 Adjustable Angle, Matte Black, No-Flex Sprint Performance & Precision Engineering

Regular price $105.88
$130.00 Sale price $105.88 Regular price
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Description
Specifications

Upgrade your cycling cockpit with the Zipp Service Course SL Stem 80mm 31.8mm Clamp +/-17 in Matte Black, expertly engineered for performance, precision, and style. Crafted from premium 7075 aluminum, this high-performance stem combines lightweight strength with superior stiffness, delivering a responsive riding experience whether you're sprinting, climbing, or cruising.

Materials & Construction

Constructed from forged AL-7075 aluminum, the Zipp Service Course SL Stem offers exceptional durability and a lightweight profile. Its matte black finish not only enhances its sleek aesthetic but also provides resistance to scuffs and corrosion, ensuring lasting performance in all riding conditions.

Performance & Engineering

Designed for aggressive riding and competitive cycling, this stem provides a stiffness of 1.85 Nm/mm, ensuring no flex during explosive sprints and powerful accelerations. The clean, machined relieved faceplate, combined with titanium hardware featuring TORX heads, allows for precise torque adjustments and easy customization, helping you optimize your cockpit setup for maximum comfort and control.

Components & Technology

Equipped with titanium bolts for reduced weight and enhanced durability, the Zipp Service Course SL Stem prioritizes reliability and ease of maintenance. Its 80mm length and +17 /-17 adjustable angle give versatile fitting options, allowing you to fine-tune your riding position for endurance rides, racing, or casual cycling.

Style & Use Case

With its sleek matte black finish and minimalist design, this stem complements a variety of bike styles-from road racing bikes to gravel grinders. Its lightweight profile and adjustable angles make it ideal for competitive cyclists seeking precise handling, as well as enthusiasts looking for a high-quality upgrade to improve bike responsiveness.

Innovative & Differentiating Features

- Forged AL-7075 aluminum for optimal strength-to-weight ratio

- Machined and relieved faceplate for a clean aesthetic and even load distribution

- Titanium hardware with TORX heads for precise torque control and durability

- Adjustable +/-17 stem angle for tailored fit and handling

Specifications

- Length: 80mm

- Clamp Diameter: 31.8mm

- Bar Clamp Diameter: 31.8mm

- Stem Angle: +17 / -17

- Material: Aluminum (7075 T6)

- Weight: 125g

- Color: Matte Black

- Stack Height: 41mm

- S.H.I.S. Clamp Diameter: 28.6mm

Enhance your bike's handling, aesthetics, and performance with the Zipp Service Course SL Stem-designed for serious cyclists demanding precision, durability, and sleek style. Perfect for road, gravel, and cyclocross bikes looking to optimize their cockpit for maximum efficiency and comfort.

  • Enhanced strength-to-weight ratio with forged 7075 aluminum construction for a durable, lightweight ride.
  • Precision engineered with machined and relieved faceplate, optimizing stiffness and rider control during sprints, climbs, and technical maneuvers.
  • Advanced component technology featuring titanium hardware with TORX heads ensures accurate torque settings, easy adjustments, and long-lasting durability.
  • Designed with a versatile +17/+17-degree adjustable angle and an 80mm length, providing customizable riding position while maintaining optimal aerodynamics and comfort.
  • Sleek matte black finish and modern styling make the Zipp Service Course SL Stem perfect for performance-oriented cyclists seeking a professional-grade component for race day or everyday riding.
Stem Angle (deg)+17
Stem Angle (deg)-17
Length80
Bar Clamp Diameter (mm)31.8
ColorMatte Black
Weight125
MaterialAluminum
Defined ColorBlack
Stack Height41
S.H.I.S. Stem Clamp Diameter28.6
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We pride ourselves on our ability to ship and deliver your gear with excessive speed! We ship from 22 locations throughout the United States and most orders will arrive in 3 days or less with Free Shipping on orders over $75!

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Most orders placed during the workweek before 1:00 PM Eastern time ship the same day, but during peak/holiday season or depending on inventory location handling time can take up to 48 hours. If you have questions regarding shipping estimates, don't hesitate to get in touch with us before placing the order. There is a direct signature requirement for all orders over $500.

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365 Cycles puts the customer above everything. Our number one goal is your satisfaction. When you press the shift lever you want the gears to shift, and when you buy bicycle parts, you want the bicycle parts to arrive on time in new condition. With over 60,000 products and 22 warehouse locations throughout the country, we have the parts you need and they are coming in hot!

Living an active lifestyle is just that, a lifestyle that never goes away and our goal is to always exceed your expectations so we can take this lifelong journey together. We strive to have the parts you need, at competitive prices with unmatched shipping speeds!

If there is ever an issue with an order we will work at warp speed to fix our mistake and make sure you never go a day without a bicycle! If you are not receiving the quality of service you need from one of our exceptionally qualified bicycle experts, tell them Ben Berman told you to tell them "Customer Loyalty" and then name your terms.

Our team is waiting to help you 7 days a week and they are more qualified to help than I am but if you ever feel like you're not getting the service you need I’m personally asking you to email me at ben@365cycles.com with "CUSTOMER LOYALTY" in the title and I will personally handle your order.

Over the years we have served millions of satisfied customers and continue to serve many of them today. With your feedback, we are confident we can take this lifelong journey together and build a friendship that goes beyond parts and accessories.

“If you want to go fast, go alone, if you want to go far, go together.” -Someone Smart

Ben Berman Founder & CEO of 365 Cycles


Company Core Values: 

These were established by the members of our team and we use them every week to call out team members who have shined in one of these areas. Feel free to let us know at info@365cycles.com if someone you worked with has gone above and beyond in one of these areas. 

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