FSA K-Force WE Crankset 170mm – High-Performance Road Bike Compact Design

Engineered for elite triathletes and time trial specialists chasing every second advantage, this Hollow Carbon Crankset redefines performance with its featherweight build and race-proven rigidity. Designed to excel in high-stakes endurance events or aerodynamic time trials, it merges advanced materials science with precision engineering to deliver unmatched power efficiency without sacrificing frame compatibility or rider comfort.

The cranks’ hollow carbon fiber construction uses unidirectional (UD) carbon layup technology to achieve an ultra-light profile while maintaining unwavering lateral stiffness during sprints or sustained efforts. This innovative variable-thickness design strategically reinforces stress-prone zones—like the chainring interface—while minimizing material elsewhere for gram-shaving weight savings that translate directly into faster accelerations.

At its core lies a forged AL7050 alloy spindle compatible with BB386EVO bottom brackets, ensuring seamless integration across modern road/triathlon frames while resisting flex under maximum power output. The chainrings feature AL7075 alloy pins subjected to full CNC 3D machining processes—a combination that enhances outer ring stiffness by up to 22% compared to standard designs—and incorporates an optimized upshift geometry for flawless gear transitions during critical moments of a race or training session.

Perfectly suited for competitive scenarios requiring both precision and durability, this black-finished system comes equipped with Torx T-30 alloy bolts for secure fastening and includes a double-ring setup (50/34T) engineered for seamless 11-speed drivetrain operation. With a pedal spindle diameter of 9/16″ and standard 170mm crank length, it balances responsive handling with ergonomic alignment—ideal for athletes prioritizing speed over bulk in demanding environments like IRONMAN competitions or velodrome training circuits.

Performance Comparison
| Feature | This Crankset | Competitor Model A | Competitor Model B |
|————————|————————|———————–|———————–|
| Weight | 534g | 612g | 598g |
| Material Construction | Hollow Carbon UD | Aluminum | Carbon/aluminum hybrid|
| Spindle Reinforcement | Forged AL7050 | CNC Aluminum | Billet Aluminum |
| Stiffness-to-Weight | Optimized via variable thickness design | Uniform thickness | Uniform thickness |
| Aerodynamic Profile | Low-drag hollow arms | Standard box-section | Semi-hollow design |

Whether tackling open-water transitions or slicing through wind barriers on paved courses, this crankset’s minimalist yet robust architecture ensures you’re always ahead of the pack—without compromising on durability or drivetrain responsiveness.