FSA SL-K Compact Carbon Drop Bar 31.8mm

The FSA SL-K Compact Carbon Drop Bar 31.8mm is a high-performance road handlebar engineered for competitive riders who demand a blend of lightweight strength, aerodynamic efficiency, and versatile fit. Made from unidirectional carbon monocoque construction, this bar offers a shallow 125 mm drop and 80 mm reach with a gentle 4° flare to help maintain comfort and control in aggressive riding positions.

Designed for both style and function, it features reinforced textured clamp zones to prevent lever slippage, a wide 120 mm center section for mounting GPS units or lights, and compatibility with integrated cable routing (ACR), semi-integrated routing (SCR), and internal Di2 setups. Available in multiple widths (380, 400, 420, 440 mm), it caters to a wide range of rider preferences and body types.

SL-K Compact Carbon Drop Bar Specs at a Glance

• Clamp Diameter: 31.8 mm
• Widths Available: 380 mm, 400 mm, 420 mm, 440 mm
• Drop: 125 mm
• Reach: 80 mm
• Flare: 4° outward bend
• Material: UD (Unidirectional) Carbon Monocoque
• Weight: Approx. 205 g (380mm), 210 g (400mm), 215 g (420mm), 220 g (440mm)
• Finish: UD Carbon
• Cable Routing: Internal options; ACR and SCR compatible; Di2 ready

Design Benefits

1. Lightweight & Stiff: Monocoque UD carbon construction keeps weight down while maintaining stiffness for responsive handling.
2. Ergonomics & Control: The compact drop and moderate reach make this bar easier to reach from the hoods, reducing fatigue without sacrificing aero posture.
3. Cable Integration: Compatibility with ACR, SCR, and Di2 internal routing lets you maintain a clean cockpit and minimal drag.
4. Adaptable Fit: Multiple width options and reinforced clamp areas allow secure fitment across diverse frames and stem systems.
5. Accessory Friendly: Wide center section makes it easy to attach computers, lights, or other accessories without interfering with cables or stem.

Final Take

The FSA SL-K Compact Carbon Drop Bar 31.8mm delivers pro-level features in a form that’s both aggressive and usable. If you want a handlebar that trades off little in performance for comfort, aero cleanliness, and versatility, this is a top choice for road racing, endurance rides, or any setup where lightweight, clean lines, and superior control are priorities.