Over 2,000,000 Million Customers Served!!!

Need Help? Click the Live Chat to Talk to a Gearhead 💪

Enjoy Free Shipping on Orders Over $75 – Available Within the Lower 48 States!

Load image into Gallery viewer, Full-Speed-Ahead-Seatpost-Carbon-STPS0618-Bicycle-Seatposts
Load image into Gallery viewer, FSA SL-K Carbon Seatpost, 25.4 x 350mm, SB0, MTC
Load image into Gallery viewer, FSA SL-K Carbon Seatpost, 25.4 x 350mm, SB0, MTC

SKU: STPS0618

FSA SL-K Carbon Seatpost 25.4mm x 350mm SB0 with UD Carbon Shaft, Bonded Alloy Head, Zero Setback, Lightweight & Stiff Engineering, MTC Clamp, 6061-T6 Aluminum & 3K Weave Tubular Construction for Road & Cycling Enthusiasts

Regular price $107.86
$102.80 Sale price $107.86 Regular price
Sale Sold out
Unit price
/per 
  • Free Shipping Over $75
  • 30 Day Returns
  • Satisfaction Guaranteed!
Get 5% Off When You Buy 2!

$10 Gift Card

at 250 points

$25 Gift Card

at 500 points

$75 Gift Card

at 1,000 points

This is a pre order item. We will ship it when it comes in stock.

$10 Gift Card

at 250 points

$25 Gift Card

at 500 points

$75 Gift Card

at 1,000 points

Description
Specifications

Upgrade your cycling performance with the FSA SL-K Carbon Seatpost - a lightweight, high-stiffness component designed for serious road cyclists and mountain bikers. Crafted from premium UD carbon fiber, this seatpost offers exceptional strength-to-weight ratio, ensuring optimal power transfer and responsiveness on every ride.

Materials & Construction:

Built with a durable UD carbon fiber shaft featuring a sleek black finish, the SL-K Carbon Seatpost combines 3K weave tubular construction with 6061-T6 alloy components. The bonded SBS 2-bolt alloy head provides added security and ease of adjustment, while the use of chromoly steel hardware ensures longevity and reliable clamping.

Performance & Engineering:

Engineered for stiffness and weight savings, the zero setback design maintains a relaxed riding position, ideal for rider comfort and aerodynamics. The 350mm length fits a broad range of frames, while the 25.4mm diameter offers precise compatibility with compatible seat rails.

Components & Technology:

Incorporating MTC (Multi-Torque Compatibility) clamp technology, this seatpost ensures uniform clamping pressure, reducing damage to your seat rails and improving stability. The bonded alloy head features a design that balances stiffness with lightweight construction, delivering efficient power transfer and reduced flex.

Style & Use Case:

This sleek black carbon fiber seatpost is perfect for competitive road racing, endurance rides, and mountain biking. Its minimalist aesthetic complements high-end bike builds, while its lightweight profile enhances overall bike performance. Whether optimizing your race bike or upgrading your trail rig, the FSA SL-K Carbon Seatpost offers a perfect blend of style, strength, and durability.

Innovative Features:

- UD Carbon fiber shaft for ultra-lightweight performance

- Bonded SBS 2-bolt alloy head for quick, secure adjustments

- MTC clamp for improved rail grip and reduced damage

- Tubular 3K weave construction for optimal stiffness and shock absorption

- Precision-machined 6061-T6 alloy components for reliability

Elevate your cycling setup with the FSA SL-K Carbon Seatpost, a high-performance component that delivers unmatched weight savings, stability, and style for the discerning rider. Compatible with various bike frames and ideal for both racing and recreational riding, this seatpost is a smart upgrade for enhancing your bike's overall efficiency and aesthetic appeal.

Keywords: carbon bike seatpost, lightweight seatpost, road bike upgrade, mountain bike seatpost, UD carbon fiber, 25.4mm seatpost, zero setback seatpost, high-stiffness seatpost, FSA SL-K, bike component, cycling gear, performance seatpost

  • Crafted from high-quality UD carbon fiber with a bonded alloy head, the FSA SL-K Carbon Seatpost offers an optimal balance of weight reduction and enhanced stiffness for precise power transfer and riding efficiency.
  • Designed with a 25.4mm diameter and zero setback geometry, this seatpost provides a sleek, minimalist profile ideal for streamlined road and endurance bikes, reducing weight and improving aerodynamics.
  • Engineered with 6061-T6 alloy components and a carbon fiber MTC clamp, the SL-K Seatpost ensures secure saddle attachment and durability, even under demanding cycling conditions.
  • Featuring a 350mm length and 3K weave tubular construction, this seatpost offers versatile fit and a premium aesthetic, making it suitable for performance-oriented road cycling and serious enthusiasts.
  • Innovative design with a UD Carbon finish and bonded SBS 2-bolt alloy head delivers a lightweight, stiff, and stylish component that enhances overall bike performance and appearance.
MaterialCarbon
Shipping
Returns
About Us
Contact Us

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

Chat

Talk with a representative

Start Chat

Email

info@365cycles.com

Send Email

Phone

603-968-5797

Call Now

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.

  • Our Mistake: If we messed it up you can rest assured we are going to make it right. Contact us by email, phone, or chat and we will make your head spin with how quick we fix it
  • Warranty: We are an authorized retailer for everything we sell, so rest assured your product is covered under the manufacturer's warranty. Contact Us if you are having an issue and we will make sure you are taken care of
  • Just don't want it anymore: We have a 30-day return policy for orders within the US. We offer refunds on returned items that are brand new and in their undamaged, original packaging. Customers are responsible for the cost of return shipping. Damaged, installed, and used items as well as those without original packaging are not eligible for returns. If it's returned in this condition it may be denied and sent back to you

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.

Chat

Talk with a representative

Start Chat

Email

info@365cycles.com

Send Email

Phone

603-968-5797

Call Now

*Please allow up to 3 business days for us to process your return*

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.

Chat

Talk with a representative

Start Chat

Email

info@365cycles.com

Send Email

Phone

603-968-5797

Call Now

Customer Reviews

Be the first to write a review
0%
(0)
0%
(0)
0%
(0)
0%
(0)
0%
(0)