BTS Hydro 4x TopoCarbon Blades

Features: 

• TopoCarbon Design
• SharkSkin Texture
• 4x4 Carbon Fabric (vs. 2x2)
• 81cm Length
• **NEW** 27 Degree Angle

Engineered for serious divers who demand precision, power, and style beneath the surface. The Hydro 4x TopoCarbon Blades feature our exclusive TopoCarbon™ weave — a cutting-edge carbon fiber layup with a topographic contour design inspired by ocean currents and seafloor mapping.

Sharkskin-textured fins mimic the ribbed micro-grooves of real shark skin, reducing drag and improving hydrodynamic efficiency. This design channels water smoothly along the blade for straighter, more stable kicks with less effort. The texture also helps minimize noise and resists visible wear, keeping your fins performing and looking sharp longer.

Built with 4-axis directional carbon reinforcement, these blades deliver unmatched energy transfer, lightning-fast recoil, and reduced diver fatigue, whether you’re hunting deep reef or chasing pelagics offshore. The unique topo lines aren’t just for looks — they reflect the precision mapping and calculated engineering that went into every layer.

The 27 degree angle have better ergonomics, making kicking more natural and comfortable! The 27 degree angle blade will break the surface more easily, making surface kicking more comfortable and optimizing the power of the push through the water relative to effort.

These will mount to all the top companies footpockets. 

When blades only are ordered, they do not have pre-drilled holes, so you can match them up to your footpockets.

Key Features:

• SharkSkin Texture - reducing drag and improving hydrodynamic efficiency. 
• 4x Multi-Directional Weave – Optimal stiffness and snap for powerful kicks with minimal energy loss
• TopoCarbon™ Construction – Distinctive topographic pattern fused with premium carbon fiber for strength, performance, and style
• Hydrodynamic Profile – Streamlined shape for reduced drag and smoother ascents/descents
• Lightweight & Responsive – Engineered for maximum efficiency in prolonged dives
• Universal Fit – Compatible with most foot pockets for easy customization
• 27° blade angle - for optimal power transfer, reducing strain on the ankles and calves.
  

It's time to step up your freediving & step into the Hydro 4x Carbon Fins! 

Firmness

Medium - 120 lbs - 185 lbs (55-85kg)

Hard - 185 lbs - 220 lbs (90kg)