Product page updated May 2026
The Blackbird Razor 847-345-75 complete hydrofoil set. This full carbon Blackbird kit features a high-aspect front wing for exceptional glide, unmatched pumping capability, and top-tier performance in downwind and prone surf. A smooth, fast, and incredibly efficient ride.
KEY INFORMATION
SABFOIL RAZOR 847 BLACKBIRD COMPLETE FOIL KIT, INTEGRATED BACKTAIL
What we like
- Razor 847 high-aspect front wing: With a 784 cm² area and 9.2 aspect ratio, it offers endless glide and surprising pumping power for its size.
- Progressive 345 stabilizer: At 150 cm² with an 8.2 aspect ratio, it ensures a clean and stable flow even through tricky transitions.
- Top-tier performance in downwind and prone surf, with incredible speed, control, and long-distance glide.
- Blackbird 75 mast: Made from UHM Carbon + W-Core, its compact 750 mm height is ideal for surf foil.
- MONOBLOC Full Carbon construction: Engineered for minimal flex and torsion.
- Speed range of 13-15 / 22-24 knots, built for maximum glide and efficiency.
Kit Type
Integrated Backtail
Color
Black
Disciplines
Wing foil, Surf foil, Downwind
Recommended for
Freeride, Wave, Downwind, SUP, Pumping.
Included in the kit
- ✓ Sabfoil Razor 847 Blackbird Front Wing (WR847/BB) x 1
- ✓ Sabfoil Progressive 345 Blackbird Stabilizer (SP345/BB) x 1
- ✓ Sabfoil Piantone Blackbird 75 Mast (M75/BB) x 1
- ✓ Sabfoil Carbon Rail Plate with titanium inserts (CP02K/Ti) x 1
- ✓ Sabfoil Screw Set for Q02K (MHQ02) x 1
- ✓ Foam Pads for plate (MH144) x 1
- ✓ Hardware Carbon Plate to Mast (MH164) x 1
- ✓ Hardware Carbon Plate to Rail Board (MH160) x 1
- ✓ Hardware Kit Blackbird Glider (MH171) x 1
- ✓ Additional Blackbird screw set MH173 x 1
- ✗ Board (sold separately)
- ✗ Protective bag (sold separately)
DETAILED DESCRIPTION
Extreme Glide, Uncompromising Efficiency
The Razor Line is designed for riders seeking a pure, fluid, and continuous flying experience. This high-aspect front wing is built for exceptional glide, unprecedented pumping capability, and remarkable performance in downwind and prone surf.
Power, Flow, and Precision in a Single Profile
Every detail of the Razor's design has been optimized to turn your every input into speed and directional control. The result is an ultra-efficient front wing that maintains a clean and stable water flow, even through the most technical transitions. It delivers endless glide thanks to its high-aspect profile, surprising pumping power for its size, speed and control over long distances, and a fluid response in carves and turns. This set includes the Blackbird Razor 847 front wing, the Progressive 345 stabilizer, and the UHM Blackbird 75 mast. To experiment with different fuselage lengths or use your Kraken stabilizers, try it with the Blackbird Back Tail fuselages for maximum modularity!
Blackbird Technology: Engineered to Perform
Superior hydrodynamic efficiency and reduced drag: the streamlined shape and monobloc construction slice through the water, improving flow and reducing turbulence for smoother transitions, touchdowns, and rail-to-rail moves. Active Lift and trim optimization: the front wing generates extra lift for earlier take-offs and reduces pressure on the rear stabilizer. This creates a flatter, faster, and more balanced ride, even at high speed. Extreme structural stiffness: the aerospace-inspired fuselage design increases torsional stiffness by over 20% compared to standard cylindrical fuselages. Full Carbon MONOBLOC construction: the integrated one-piece connection between the front wing, fuselage, and tail ensures minimal flex and torsion, smoother transitions, instant feedback, and a truly connected ride feel.
Who is it for?
The Razor 847 Integrated kit is for riders seeking maximum efficiency and glide. It's ideal for downwind and prone surf enthusiasts, anyone who wants a foil that flies further with minimal effort, and experienced foilers looking to push their limits on a high-aspect setup.
| Specifications | |
|---|---|
| Product Code | KR-847-345-75/BB |
| Range | Blackbird |
| Range | Razor |
| Type | Integrated Backtail (integrated fuselage) |
| Disciplines | Wing foil, Surf foil, Downwind |
| Recommended for | Freeride, Wave, Downwind, SUP, Pumping |
| Front Wing, Wingspan | 847 mm |
| Front Wing, Surface | 784 cm² |
| Front Wing, Aspect Ratio | 9.2 |
| Front Wing, Root Chord | 115 mm |
| Front Wing, Maximum thickness | 16 mm |
| Stabilizer, Wingspan | 345 mm |
| Stabilizer, Surface | 150 cm² |
| Stabilizer, Aspect Ratio | 8.2 |
| Stabilizer, Root Chord | 64.4 mm |
| Stabilizer, Maximum thickness | 7.3 mm |
| Fuselage, Total length | 640 mm |
| Mast, Height | 750 mm |
| Mast, Construction | UHM Carbon + W-Core |
| Mast, Board Connection | Carbon Plate |
| Total Weight (approx.) | 3.5 kg |
| Take-off speed | 13 to 15 knots |
| Top speed (80 kg rider) | 22 to 24 knots |
| Color | Black |
FAQ: SABFOIL RAZOR 847 BLACKBIRD INTEGRATED COMPLETE FOIL KIT
Sabfoil designed the KR-847-345-75/BB kit for riders seeking maximum efficiency and glide. It's perfect for downwind and prone surf enthusiasts, foilers who want to fly further with less effort, and experienced riders ready to explore a high-aspect setup. This kit excels in Freeride, Wave, Downwind, SUP, and Pumping.
Both kits share the same M75/BB mast. The 737 (€1869) is designed for surf and carving, featuring a smaller, narrower front wing (648 cm², AR 8.4) and a Flat 325 stabilizer. The 847 (this kit, €1889) delivers superior glide and pumping with its larger, high-aspect front wing (784 cm², AR 9.2) and a Progressive 345 stabilizer. The 847 is also suited for Downwind, while the 737 is more surf-focused.
Sabfoil offers two versions of the Razor 847 kit. The Integrated Backtail (this kit, KR-847-345-75/BB) has a one-piece fuselage and Progressive 345 stabilizer. The Modular Full Carbon version (KR847-FCM-SDW360-75/BB, same price at €1889) has a separate FC/M modular fuselage and a Downwind 360 stabilizer. The Modular version is for riders who want to swap out different stabilizers.
The Razor front wing comes in four sizes: 737 (648 cm²), 847 (in this kit, 784 cm²), 977 (953 cm²), and 1077 (1069 cm²). Larger front wings provide earlier lift and are better suited for light wind, pumping, and downwind.
Yes, the kit includes everything you need for assembly: the WR847/BB front wing, the integrated Progressive 345 stabilizer and fuselage, the Piantone Blackbird 75 mast, a Carbon Rail plate with titanium inserts (CP02K/Ti), and all required hardware (MHQ02, MH144, MH160, MH164, MH171, MH173). You just need to supply the board.
For the M75/BB mast, we recommend the Sabfoil Cover Mast A bag (SKU: MA021), which is compatible with models M63K, M73K, M73PLK, M75BB, and M76. For the front wing, the Sabfoil Cover Front Wing D bag (SKU: MA028) is compatible with models WR847, WR977, WR1077, WB800, WB1000, WR880, WR980, WRP875, WRP975, WRP1075, and W1110.
▶ Need some advice?
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