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SKU: CKST3551

FSA SL-K 2x Modular Carbon Crankset 172.5mm for SRAM AXS 12-Speed - Ultra-Light Hollow Carbon, 48/35T Chainrings, Cold Forged 7075 Aluminum, MEGATORQ Technology, 30mm 386EVO Spindle, Road & Gravel Performance, Durable & Stiff Design

Regular price $492.00
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Description
Specifications

Upgrade your cycling performance with the Full Speed Ahead SL-K 2x Modular Carbon Crankset - the ultimate choice for road, gravel, and professional cyclists. Crafted from cutting-edge materials and manufactured entirely in-house, this crankset delivers an unbeatable combination of lightweight efficiency, exceptional stiffness, and sleek aesthetics, making it perfect for demanding riding conditions and competitive pursuits.

Materials & Engineering:

Built with FSA's innovative Hollow Technology, the SL-K crankarms are crafted from ultra-light, hollow carbon fiber, offering maximum strength-to-weight ratio. The 30mm CNC-machined 7050 aluminum spindle ensures robust durability, while the sleek UD carbon finish provides an eye-catching, high-performance look. Designed to withstand rigorous use, this crankset balances lightweight construction with long-term resilience.

Components & Technology:

Featuring FSA's renowned MEGATORQ technology, the chainrings-made from cold-forged, CNC-machined 7075 aluminum-provide superior chain retention, smooth and precise shifting, and exceptional durability. The 48/35t double chainring setup is optimized for 12-speed SRAM AXS systems, with a direct mount outer ring and 90 BCD inner rings for seamless compatibility. The updated derailment angle on the non-contact side enhances shifting efficiency, ensuring rapid gear changes under load. The 386EVO spindle interface and 9/16" pedal spindles guarantee compatibility with a wide range of pedals and hubs.

Performance & Use Case:

Ideal for cyclists seeking a lightweight, high-stiffness crankset for road or gravel adventures, the SL-K 2x offers optimized chainline options for 130mm, 135mm, and 142mm hubs, accommodating various bike configurations with a 44mm chainline and 174mm Q-Factor. Whether racing, endurance riding, or gravel grinding, this crankset delivers reliable power transfer, impressive stiffness, and smooth shifting for a confident ride.

Style & Aesthetics:

With its matte black finish and sleek design, this crankset adds a professional touch to any bike setup. Its modular design allows for easy customization and maintenance, giving you the flexibility to adapt to different riding styles and preferences. Elevate your bike's look with a component engineered for both form and function.

Key Features:

- Compatible with SRAM AXS 12-speed drivetrains for seamless shifting

- Ultra-light hollow carbon crankarms for maximum efficiency

- MEGATORQ technology for unmatched chainring performance

- Cold forged, CNC machined 7075 aluminum chainrings

- Optimized derailment angle for faster, precise shifts

- 30mm CNC-machined 7050 BB386EVO spindle for durability

- Suitable for road and gravel applications with a 44mm chainline

- 172.5mm crank arm length and 174mm Q-Factor for optimal pedaling leverage

Enhance your cycling experience with the Full Speed Ahead SL-K 2x Modular Carbon Crankset-designed for cyclists who demand the best in lightweight performance, innovative technology, and sleek style. Perfect for competitive racing and serious riding, this crankset helps you push boundaries and achieve new speeds.

  • Lightweight Carbon Construction with FSA Hollow Technology for unparalleled stiffness and durability, reducing weight without compromising strength on climbs and sprints.
  • Revolutionary MEGATORQ technology ensures optimal chain retention, smooth shifting, and enhanced durability under extreme riding conditions, perfect for high-performance road and gravel cycling.
  • Compatible with SRAM AXS 12-speed systems featuring direct mount outer chainring and 90 BCD inner chainrings, offering precise gear changes and streamlined setup.
  • Sleek UD Carbon finish combined with CNC machined 7075 aluminum chainrings provides a visually striking look while delivering exceptional performance and longevity.
  • Optimized for 30mm spindle interface (386EVO), 172.5mm crank length, and a 44mm chainline, making it ideal for modern road and gravel bike setups with 130/135/142 hubs and narrow chainstays.
Rings48/35
Number of ChainringsDouble
Drivetrain Speeds12
Chainring BCDDirect Mount FSA
Chainring BCD90
Chainline/Hub Compatibility130 Hubs
Chainline/Hub Compatibility135/142 Road Disc Hubs < 415 mm Chainstay
Chainline/Hub Compatibility135/142 Road Disc Hubs > 415 mm Chainstay
ColorBlack
Crank Length (mm)172.5
Crank Intended UseRoad
Crank Intended UseGravel
Weight650
BB IncludedNo
Pedal Spindle9/16"
Spindle Interface Type386 EVO
Defined ColorBlack
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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. 

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You Control the Outcome

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

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Progress Not Perfection

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Keep Moving

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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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