FSA SL-K Lightweight Modular Crankset 172.5mm Road Bike Upgrade

The SL-K Modular BB386EVO Crankset from FSA is engineered for riders seeking seamless versatility across gravel, adventure, and road disciplines. Its innovative BB386 EVO spindle system allows effortless compatibility with multiple frame standards—whether you’re upgrading an older model or building a new rig—ensuring this crankset adapts to your setup without compromise. Crafted for performance and durability, hollow carbon fiber arms deliver a featherlight 670g weight while maintaining rigidity for efficient power transfer on every terrain.

Ideal for cyclists tackling everything from pavement to rugged trails, this double-chainring system features a 46/30T configuration paired with direct mount outer rings and 90 BCD inner chainrings. The design prioritizes simplicity and reliability: chromoly bolts secure chainrings effortlessly, while compatibility with Shimano and SRAM 10-11 speed drivetrains ensures smooth integration into existing groupsets. Whether you’re conquering all-day gravel epics or racing on tarmac, its optimized 130mm hub compatibility (and support for road disc hubs up to 415mm chainstay) guarantees precise chainline alignment and quiet operation.

Why Choose SL-K BB386EVO?
| Feature | SL-K BB386EVO | Competitor A (SRAM X1) | Competitor B (Shimano FC-M8000) |
|————————|————————|——————————-|———————————-|
| Spindle Compatibility | Universal BB386 EVO | Limited road-specific options | Narrow trail-focused range |
| Weight (grams) | 670 | 720 | 750 |
| Chainring Design | Direct Mount + 90 BCD | Traditional bolt-on | Heavier alloy construction |
| Drivetrain Support | Shimano/SRAM 10-11 spd | SRAM only | Shimano only |

Designed for riders who demand adaptability without sacrificing performance, this crankset excels in scenarios where frame upgrades or multi-bike setups are common. Its sleek black finish combines style with durability, while the 172.5mm crank length and 9/16″ pedal spindle cater to standard configurations. Unlike single-purpose cranks that limit your frame choices, SL-K BB386EVO empowers you to explore diverse terrains and drivetrain setups—making it an essential upgrade for gravel grinders and road enthusiasts alike.