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!

SKU: STPS0303

Full Speed Ahead SL-K SB20 Carbon Seatpost 27.2mm 400mm Lightweight UD Carbon Fiber Shaft with Alloy Head, 6061-T6 Tubular Construction, Stiff & Durable Cycling Seatpost for Road & MTB Bikes

Regular price $104.60
$102.80 Sale price $104.60 Regular price
Sale Sold out
Unit price
/per 
  • Free Shipping Over $75
  • 30 Day Returns
  • Satisfaction Guaranteed!

$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

Introducing the Full Speed Ahead (FSA) SL-K SB20 Carbon Seatpost - a premium performance upgrade for serious cyclists who demand lightweight efficiency, superior stiffness, and durable reliability. Engineered with advanced materials and innovative design, this 27.2mm diameter seatpost seamlessly combines style and functionality for road, mountain, or gravel cycling pursuits.

Materials & Construction:

Crafted with a high-grade UD (ultra-durable) carbon fiber shaft, the SL-K SB20 ensures unmatched strength-to-weight ratio. The seatpost features a bonded alloy head made from 6061-T6 aluminum, providing exceptional durability and corrosion resistance. The tubular construction incorporates a premium 3K weave carbon fiber layer, enhancing stiffness and resilience while maintaining a sleek, matte black finish for a refined aesthetic.

Performance & Engineering:

Designed for optimal bike fit and excellent saddle stability, the SL-K SB20 offers a 20mm setback offset, allowing for precise saddle positioning tailored to your riding style. Its lightweight design, weighing only 235 grams, reduces overall bike weight-boosting climbing efficiency and acceleration. The combination of carbon fiber and alloy components grants superb stiffness for efficient power transfer, while the chromoly steel hardware ensures a secure and easy clamp, delivering long-lasting performance ride after ride.

Components & Technology:

Featuring a bonded SBS 2-bolt alloy head, this seatpost provides a reliable clamp for secure saddle attachment and effortless adjustments. The standard rails clamp style makes compatibility straightforward with most saddle models, and the fine engineering ensures minimal flex for precise handling and rider comfort across varied terrains.

Style & Use Case:

With its sleek black finish and lightweight profile, the FSA SL-K SB20 is perfect for competitive road cyclists, gravel adventurers, and mountain bikers seeking a high-performance, aesthetically refined component. Its versatile design complements a wide range of frame geometries, making it an excellent choice for those looking to reduce weight without sacrificing durability or control.

Innovative & Differentiating Features:

- Ultra-light UD carbon fiber shaft for optimal stiffness and weight savings

- Bonded alloy head for enhanced durability and secure saddle clamp

- Tubular 3K weave carbon construction for superior strength and stiffness

- Precise 20mm setback for optimized rider positioning

- Sleek, matte black finish for a modern, understated look

Upgrade your bike with the Full Speed Ahead SL-K SB20 Carbon Seatpost - engineered for performance, built for the ride. Enhance your cycling experience with this high-quality, SEO-optimized component designed to boost ride quality and efficiency.

  • Lightweight UD carbon shaft combined with a bonded 2-bolt alloy head for enhanced stiffness and durability, reducing weight without sacrificing strength.
  • Constructed from premium 6061-T6 alloy and carbon fiber 3K weave tubular, offering optimal performance, vibration dampening, and structural integrity for high-level cycling.
  • Sleek black UD carbon finish with a modern aesthetic, suitable for road, triathlon, and racing bikes, elevating your bike's style and aerodynamic profile.
  • Designed with a 27.2mm diameter and a 400mm length, providing versatile compatibility and long-lasting support for various bike frames and rider preferences.
  • Features a 20mm offset for optimal saddle positioning and bonding chrome-moly steel hardware for reliable clamping, ensuring secure saddle attachment in demanding riding conditions.
Length400
ColorBlack
Weight235
Diameter27.2
MaterialCarbon
Defined ColorBlack
Clamp StyleStandard Rails
Offset (mm)20
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)