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SKU: CKST3549

FSA SL-K 2x Modular Carbon Crankset 165mm for Shimano 12-Speed HG+ | Ultra-Light Hollow Carbon Arms, MEGATORQ Technology, 50/40T Chainrings, 30mm 386EVO Spindle, Direct Mount, Road & Gravel Performance

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

Introducing the Full Speed Ahead SL-K 2x Modular Carbon Crankset - the ultimate performance upgrade for serious cyclists seeking lightweight efficiency, precision shifting, and durable engineering. Designed for Shimano HG+ 12-speed systems, this 165mm crankset combines cutting-edge materials with innovative technology to elevate your riding experience across road, gravel, and endurance disciplines.

Materials & Construction:

Crafted from high-modulus UD carbon fiber using FSA's proprietary Hollow Technology, the SL-K crankset offers exceptional strength-to-weight ratio. The ultra-light hollow carbon arms provide superb stiffness for efficient power transfer, while maintaining reduced weight for enhanced acceleration and agility. The CNC-machined 7075 aluminum chainrings feature FSA's advanced MEGATORQ technology, delivering resilience, optimal chain retention, and smooth, confident gear shifts.

Performance & Engineering:

This crankset is engineered for peak performance in demanding conditions. The 30mm CNC-machined BB386EVO spindle ensures a rigid interface, minimizing flex for maximum power transfer. The lightweight design (approximately 650 grams) and 174mm Q-Factor make it suitable for competitive racing and long-distance rides. The updated derailment angle on the non-contact side ensures faster, more precise shifting and superior chain retention under heavy loads.

Components & Technology:

- Direct Mount 50/40T Chainrings: Compatible with Shimano HG+ 12-speed drivetrains, combining durability with lightweight design.

- MEGATORQ Chainring Technology: Cold forged for superior strength, featuring optimized tooth profiles for reduced chain drops and smooth shifting.

- Hollow Carbon Arms: FSA's Hollow Technology ensures excellent stiffness and weight savings for elevation-grade performance.

- Premium Spindle Interface: 30mm CNC-machined 7050 BB386EVO spindle offers a robust, wobble-free connection to your bottom bracket.

- Versatile Compatibility: Suitable for 130, 135, and 142mm hub spacing, with compatibility for road and gravel wheelsets.

Style & Use Case:

Sporting a sleek UD carbon black finish, this crankset pairs outstanding technical performance with a clean, modern aesthetic. Its modular design facilitates ease of maintenance and customization, making it ideal for competitive road cyclists, gravel adventurers, and endurance riders who demand reliable, high-performance components.

Innovative & Differentiating Features:

- Fully in-house engineered with proprietary Hollow Technology for unmatched stiffness-to-weight ratio.

- MEGATORQ's innovative tooth profile enhances chain retention and shifting accuracy at high speeds and under load.

- Compatible with a broad range of wheelsets and drivetrain configurations, ensuring versatile integration across your bike.

Upgrade your ride with the Full Speed Ahead SL-K 2x Modular Carbon Crankset - where advanced materials, precise engineering, and innovative technology come together to deliver unparalleled performance.

  • Lightweight Full Carbon Construction with Hollow Technology for superior stiffness-to-weight ratio, ensuring optimal power transfer and durability on climbs and sprints.
  • Designed specifically for Shimano HG+ 12-Speed systems with 50/40t chainrings and 90 BCD, providing precise, smooth shifting and reliable chain retention for both road and gravel cycling.
  • Advanced MEGATORQ technology in cold-forged 7075 aluminum chainrings offers exceptional wear resistance, enhancing chain grip, reducing drops, and maintaining efficiency over long rides and demanding conditions.
  • Sleek UD carbon finish combined with 30mm CNC-machined BB386EVO spindle delivers a professional aesthetic and compatible, high-performance interface for enhanced stiffness and power application.
  • Engineered with innovative updated derailment angles and optimized tooth profiles for faster, more accurate gear shifts, making it ideal for competitive cycling, endurance rides, and versatile road/gravel applications.
Rings50/40
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)165
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!

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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

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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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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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