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Load image into Gallery viewer, Zipp-Threadless-28.6-6-Degrees-1-1-8-in-STEM0508-Bicycle-Stems
Load image into Gallery viewer, Zipp Service Course SL Stem 120mm 31.8 Clamp +/-6 1 1/8 in Matte Blk B2 Aluminum
Load image into Gallery viewer, Zipp Service Course SL Stem 120mm 31.8 Clamp +/-6 1 1/8 in Matte Blk B2 Aluminum
Load image into Gallery viewer, Zipp Service Course SL Stem 120mm 31.8 Clamp +/-6 1 1/8 in Matte Blk B2 Aluminum

SKU: STEM0508

Zipp Service Course SL 120mm Alloy Road Bike Stem - 7075 Aluminum, +6/-6 Adjustable, 31.8mm Clamp, Matte Black, Lightweight, No-Flex Precision, Titanium Hardware, Aerodynamic, Performance-Driven Cycling Stem

Regular price $105.56
$130.00 Sale price $105.56 Regular price
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Description
Specifications

Upgrade your cycling performance with the Zipp Service Course SL Stem 120mm, a premium handlebar stem engineered for ultimate stiffness, lightweight durability, and precision control. Crafted from forged 7075 aluminum, this stem offers superior strength-to-weight ratio, ensuring no-flex sprints, rapid accelerations, and confident handling on every ride.

Materials & Engineering Excellence

Constructed from high-grade forged AL-7075 aluminum, the Zipp Service Course SL Stem combines durability with a sleek matte black finish for a refined aesthetic. Its machined and relieved faceplate optimizes weight savings, while the titanium hardware with TORX heads provides exact torque application, enhancing safety and ease of adjustments during maintenance or customization.

Performance & Components

Designed for serious cyclists, this stem features a 120mm length with a +6 or -6 adjustable angle, enabling customization of your riding position for comfort or aggressive aerodynamic posture. The 31.8mm bar clamp diameter ensures compatibility with a wide range of handlebars, while the lightweight 125 grams minimizes overall bike weight, improving responsiveness and speed.

Style & Use Case

Ideal for road racing, triathlons, and endurance cycling, the Zipp Service Course SL Stem combines sleek matte black styling with high-performance engineering. Its clean design and premium materials make it a great choice for riders seeking both style and function, whether upgrading a race bike or building a custom build for competitive riding.

Innovative Features & Technology

The stem's advanced forging process and titanium hardware deliver exceptional stiffness and low flex, translating to every ounce of effort into forward motion. The precision-machined faceplate and TORX hardware ensure secure clamping and reliable performance in all conditions. Its ergonomic design supports efficient power transfer, making it a standout component for competitive cyclists.

Specifications at a Glance:

- Material: Forged AL-7075 Aluminum

- Length: 120mm

- Clamp Diameter: 31.8mm, 28.6mm S.H.I.S.

- Angles: +6 / -6

- Color: Matte Black

- Weight: 125g

- Stack Height: 41mm

Elevate your bike's handling and aesthetic with the Zipp Service Course SL Stem - the ultimate choice for riders requiring precision, strength, and lightweight performance in a sleek, modern design. Perfect for optimizing your ride's fit, control, and speed.

  • Lightweight and durable forged AL-7075 aluminum construction offers exceptional stiffness of 1.85 Nm per Newton meter, delivering no-flex performance during sprints and rapid accelerations.
  • Designed for precise handling and customization, the Zipp Service Course SL Stem features machined, relieved faceplate and titanium hardware with TORX heads for easy adjustments and reliable torque readings.
  • Optimized for 31.8mm handlebar compatibility, this 120mm stem with a versatile +6/-6 degree angle enhances rider control and comfort on road or race bikes.
  • Sleek matte black finish provides a stylish, professional look while resisting scratches and wear, making the stem both functional and aesthetically appealing.
  • Trusted by competitive cyclists and endurance riders alike, this stem combines innovative engineering and lightweight performance technology to improve bike responsiveness and overall riding experience.
Stem Angle (deg)+6
Stem Angle (deg)-6
Length120
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!

The nitty gritty, for specific delivery timelines please pay attention to the delivery timelines on the product pages and the time frame estimated in the carts. If you need a part by a specific day, please contact us by chat, phone, or

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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.

We provide the you the ability to utilize multiple shipping & billing addresses, based upon what fits your current needs. However you are responsible to maintain and update any new address changes, as 365 Cycles will not be held liable for orders being shipped to an incorrect address.

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If you need to return your order please email us at info@365cycles.com, call us at 603-968-5797, or use the live chat on our site.

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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. 

Customer Loyalty

Put yourself in their shoes and support those who support us.

You Control the Outcome

If it is to be, it’s up to me" You are personally responsible for controlling the outcome.

Seek Understanding

Understanding the answer is more important than the answer.

Progress Not Perfection

Pick a direction, analyze the results, and be willing to change course.

Will to Win

Customers, 365 Team, Partners, all need the will to win. Bring the Will to Win to every conversion.

Keep Moving

Move the body, move the mind, and remove any hurdles to achieving an active lifestyle.

Do the Right Thing:

Doing the right thing is more important than doing the thing right.

Stronger together:

If you want to go fast, go alone, if you want to go far, go together. Get your team involved and become stronger together.

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