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SKU: CKST3538

Full Speed Ahead SL-K 2x Modular Carbon Crankset 170mm for Shimano 12-Speed HG+ | Ultra-Light Hollow Carbon Arms, MEGATORQ Chainring Technology, 53/39T, Direct Mount, 30mm CNC Machined Spindle, Road & Gravel Performance

Regular price $492.00
$546.95 Sale price $492.00 Regular price
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Description
Specifications

Experience peak cycling performance with the Full Speed Ahead SL-K 2x Modular Carbon Crankset - the ultimate choice for road, gravel, and high-performance cycling. Crafted with precision and innovation, this 170mm crankset features advanced materials and cutting-edge technology tailored for serious cyclists demanding superior quality, durability, and style.

Materials & Construction:

Built with FSA's proprietary Hollow Technology, the SL-K combines ultra-lightweight, hollow carbon crank arms with exceptional stiffness. The carbon fiber used is high-grade UD (ultra-durable) finish, offering both aesthetic appeal and top-tier strength. The premium 30mm CNC-machined BB386EVO spindle made from 7050 aluminum ensures reliable power transfer while maintaining minimal weight.

Performance & Engineering:

Designed for optimal efficiency, the SL-K crankset is compatible with Shimano HG+ 12-Speed systems, supporting smooth, precise gear shifts. The double chainring configuration features a 53/39t setup and a 90 BCD, optimized for high cadence and power output. The updated derailment angle on the non-contact side enhances shifting responsiveness under load, reducing chain drops and improving chain retention even during intense rides.

Components & Technology:

Equipped with FSA's innovative MEGATORQ technology, the CNC-machined cold forged 7075 aluminum chainrings guarantee superior durability, exceptional chain retention, and smooth shifting performance. The direct mount outer chainring paired with compatible inner chainrings ensures quick interchangeability and customization for different riding styles or terrain. The system supports 130mm and 135/142mm road disc hub standards, with a 44mm chainline for optimal power transfer and clearance.

Style & Use Case:

Boasting a sleek black finish, the SL-K crankset combines aesthetic sophistication with high-performance capability. Its versatile design makes it suitable for road cycling, gravel adventures, and endurance riding. Whether racing on pavement or tackling rugged gravel routes, this crankset offers a perfect balance of lightweight agility and robust engineering.

Innovative & Differentiating Features:

- Fully in-house manufactured with advanced carbon fiber and alloy components

- Hollow Technology for lightweight design, exceptional stiffness, and longevity

- MEGATORQ technology for unmatched chain engagement and smooth shifting

- Direct mount chainrings with optimized tooth profiles for superior chain retention

- Compatible with Shimano HG+ 12-Speed drivetrain systems for seamless gear transitions

Upgrade your cycling setup with the Full Speed Ahead SL-K 2x Modular Carbon Crankset - engineered for speed, precision, and durability. Perfect for competitive cyclists and dedicated enthusiasts seeking a high-performance, reliable, and visually striking component to elevate their ride.

  • High-performance 2x modular carbon crankset featuring ultra-light Hollow Technology for optimal stiffness-to-weight ratio, enhancing power transfer and efficiency on both road and gravel rides.
  • Built with advanced UD carbon fiber and cold forged 7075 aluminum chainrings equipped with FSA's innovative MEGATORQ technology, guaranteeing superior chain retention, seamless shifting, and long-lasting durability even under demanding conditions.
  • Designed for Shimano HG+ 12-speed drivetrains with a sleek 53/39t gear ratio, 130-135mm chainline options, and a 30mm CNC machined 386EVO spindle, offering precise compatibility and flexible use across road and gravel cycling setups.
  • Features fully in-house manufacturing and innovative derailing angle adjustments for enhanced shifting efficiency, minimizing chain drops and improving responsiveness during high-intensity riding or technical terrain.
  • Aesthetically refined with a durable, matte UD carbon finish, the SL-K 2x crankset delivers both style and performance, making it the ideal choice for competitive cyclists and enthusiasts seeking lightweight, high-tech components with a sleek visual profile.
Rings53/39
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)170
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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  • 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.

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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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