Data sheet updated in May 2026
The Razor 847-SDW360-75 Blackbird Kit, Modular Full Carbon Backtail. This high-aspect Front Wing delivers exceptional glide, unmatched pumping capability, and top-tier performance for downwind and prone surf. It features a modular configuration with an FC/M Full Carbon fuselage, a Downwind Kraken SDW 360 stabilizer, and a Blackbird 75 mast. The result is a smooth, fast, and infinitely efficient ride.
KEY INFORMATION
SABFOIL RAZOR 847 BLACKBIRD COMPLETE FOIL KIT, MODULAR FULL CARBON DOWNWIND
What we like
- Razor 847 high-aspect Front Wing: At 784 cm² with an AR of 9.2, it offers infinite glide and surprising pumping capability for its size.
- Downwind Kraken SDW 360 Stabilizer: This ultra high-aspect (AR 11.78) stabilizer, with a reduced surface area of 110 cm², is specifically designed for downwind glide and pumping.
- FC/M Full Carbon Modular Fuselage: This innovative fuselage lets you test different stabilizers and fine-tune your trim with the included shims.
- Blackbird 75 mast: Crafted from UHM Carbon + W-Core, this compact 750 mm mast is ideal for surf foil.
- Shim set included: Both positive and negative shims are included to optimize your trim.
- Optimal speeds of 13-15 / 22-24 knots, focused on maximizing glide and efficiency.
Kit Type
Modular Full Carbon
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 Downwind Kraken 360 Stabilizer (SDW/360) x 1
- ✓ Blackbird Full Carbon modular fuselage size M (FC/M) 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 S330Y/S370/S376/S399/S400/SRD339/SRD379 (MH107) x 1
- ✓ Negative Shim Set for stabilizers (MHW060) x 1
- ✓ Positive Shim Set for stabilizers (MHW061) x 1
- ✓ Additional Blackbird screw set MH173 x 1
- ✗ Board (sold separately)
- ✗ Protection bag (sold separately)
DETAILED DESCRIPTION
Extreme Glide, Uncompromising Efficiency
The Razor Line is for riders who demand a pure, fluid, and continuous flight experience. This high-aspect front wing delivers 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 transform your input into pure speed and directional control. The result is an ultra-efficient Front Wing, capable of maintaining clean and stable water flow even through the most delicate transitions. Experience infinite glide thanks to its high-aspect profile, surprising pumping capability for its size, incredible speed and control over long distances, and fluid response in carves and glides. This complete foil kit includes the Blackbird Razor 847 Front Wing, the FC/M full carbon modular fuselage, the Blackbird 75 mast, and the Downwind Kraken SDW 360 stabilizer.
Blackbird Technology and Full Carbon Modular Fuselage
Experience superior hydrodynamic efficiency and drag reduction: the streamlined shape and monobloc construction cut through both water and air, improving flow and reducing turbulence for significantly smoother transitions, touchdowns, and rail-to-rail passages. Enjoy Active Lift and optimized trim: the Front Wing generates additional lift, allowing for earlier take-off and reducing pressure on the rear stabilizer. Benefit from extreme structural stiffness: the aeronautics-inspired fuselage design increases torsional stiffness by over 20% compared to cylindrical fuselages. The FC/M Full Carbon modular fuselage minimizes flex and torsion, lets you test different stabilizers and fine-tune the trim with shims, and ensures even smoother transitions.
Who is it for?
The Razor 847 Modular Full Carbon Downwind kit is designed for ambitious and technical riders, freestylers seeking pop and control, and downwind and wave riders looking for speed and flow. The Downwind Kraken SDW 360 stabilizer (AR 11.78, reduced surface 110 cm²) makes this a configuration particularly suited for downwind and long-distance pumping, where glide and efficiency take precedence over pure stability. The modular nature allows for setup adjustments, alternating between several stabilizers, or fine-tuning the trim with the included shims.
| Specifications | |
|---|---|
| Sabfoil Reference | KR847-FCM-SDW360-75/BB |
| Range | Blackbird |
| Range | Razor |
| Type | Modular Full Carbon Backtail |
| 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 | 9.20 |
| Front Wing, Root Chord | 115 mm |
| Front Wing, Maximum thickness | 16 mm |
| Stabilizer, Wingspan | 360 mm |
| Stabilizer, Surface | 110 cm² |
| Stabilizer, Aspect Ratio | 11.78 |
| Stabilizer, Root Chord | 44 mm |
| Stabilizer, Maximum thickness | 6.74 mm |
| Fuselage, Type | FC/M Modular Full Carbon |
| Fuselage, Total length | 650 mm |
| Mast, Height | 750 mm |
| Mast, Construction | UHM Carbon + W-Core |
| Mast, Board Connection | Carbon Plate |
| Total Weight (approx.) | 3.61 kg |
| Take-off speed | 13 to 15 knots |
| Top speed (80 kg rider) | 22 to 24 knots |
| Color | Black |
FAQ, SABFOIL RAZOR 847 BLACKBIRD MODULAR KIT
Sabfoil presents the KR847-FCM-SDW360-75/BB as a complete foil kit for ambitious riders seeking maximum efficiency and glide, downwind and prone surf enthusiasts, and those who want an adjustable modular setup. The presence of the Downwind Kraken SDW 360 stabilizer (AR 11.78) makes it an option specifically oriented towards downwind and long-distance pumping.
Both Razor 847 kits share the same Front Wing (WR847/BB) and mast (M75/BB), at the same price of €1889. The Modular Full Carbon (this kit) combines the modular FC/M fuselage and the Downwind Kraken SDW 360 stabilizer (110 cm², AR 11.78), which is very high-aspect and downwind-oriented; it weighs 3.61 kg. The Integrated Backtail uses a fuselage integrated with the more allround Progressive 345 stabilizer (150 cm², AR 8.2); it weighs 3.5 kg. Sabfoil announces the same take-off and top speeds for both versions (13-15 and 22-24 knots).
The SDW 360 comes from the Kraken Downwind line. With a wingspan of 360 mm, a reduced surface of 110 cm², and a very high aspect ratio of 11.78, it is specifically designed to minimize drag and maximize glide in long-distance pumping and downwind. It is a sharper stab than the Progressive 345 in the Integrated kit, better suited for experienced downwind riders.
Sabfoil describes the modular Full Carbon fuselage as a construction that minimizes flex and torsion, allows for testing different stabilizers and fine-tuning the trim with shims (positive and negative included in this kit), and ensures smoother transitions.
Yes, the complete foil kit includes all necessary components: WR847/BB Front Wing, FC/M fuselage, Downwind Kraken SDW 360 stab, Piantone Blackbird 75 mast, Carbon Rail plate with titanium inserts (CP02K/Ti), and all the screw set and shims (MHQ02, MH144, MH160, MH164, MH173, MH107, MHW060 and MHW061). Only the board needs to be provided.
Sabfoil offers the Cover Mast A bag (reference MA021) for the M75/BB mast, which is explicitly compatible with M63K, M73K, M73PLK, M75BB, and M76. For the Front Wing, Sabfoil offers the Cover Front Wing D bag (reference MA028), explicitly compatible with WR847, WR977, WR1077, WB800, WB1000, WR880, WR980, WRP875, WRP975, WRP1075, and W1110.
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