Data sheet updated in May 2026
Blackbird Razor 977-375-75 hydrofoil complete set. This full carbon Blackbird set delivers exceptional glide, unparalleled pumping capability, and top-tier performance for downwind and prone surf. It includes the Razor 977 Front Wing (AR 10.2), the Downwind 375 stabilizer, and the Blackbird 75 mast. The ride is smooth and fast. It is also infinitely efficient.
KEY INFORMATION
SABFOIL RAZOR 977 BLACKBIRD COMPLETE FOIL KIT, INTEGRATED BACKTAIL
What we like
- Razor 977 high-aspect Front Wing: At 953 cm² with an AR of 10.2, this Front Wing is positioned perfectly between the 847 and 1077 for maximum versatility.
- Downwind 375 Stabilizer (SDW375/BB): This 130 cm² stabilizer, with an AR of 10.4, is specifically designed for pumping and long-distance downwind runs.
- Early take-off is achievable from just 10-12 knots, with a top speed of 22-24 knots.
- Blackbird 75 mast: Crafted from UHM Carbon + W-Core, this compact 750 mm mast is ideal for surf foil.
- MONOBLOC Full Carbon construction: Engineered to minimize flex and torsion.
- 5-discipline versatility: This complete foil is perfect for Wing, Surf, Pump foil, SUP foil, and Downwind riding.
Kit Type
Integrated Backtail
Color
Black
Disciplines
Wing foil Surf foil Pump foil SUP foil Downwind
Recommended for
Freeride, Dock-Start, Downwind, SUP, Pumping.
Included in the kit
- ✓ Sabfoil Razor 977 Blackbird Front Wing (WR977/BB) x 1
- ✓ Sabfoil Downwind 375 Blackbird stabilizer (SDW375/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)
- ✗ 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 every input into pure speed and precise directional control. The result is an ultra-efficient Front Wing, capable of maintaining clean and stable water flow even through the most delicate transitions. You'll 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 set includes the Blackbird Razor 977 with the Downwind 375 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
Experience superior hydrodynamic efficiency and reduced drag: the streamlined shape and monobloc construction slice through water and air, improving flow and reducing turbulence for smoother transitions, touchdowns, and rail-to-rail passages. Active Lift and trim optimization: the Front Wing generates additional lift, allowing for earlier take-off and reducing pressure on the rear stabilizer, for 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 cylindrical fuselages. Full Carbon MONOBLOC construction: the integrated monobloc connection between the front wing, fuselage, and tail ensures minimal flex and torsion, smoother transitions, instant feedback and control, and a truly connected ride feel.
Who is it for?
The Razor 977 Integrated kit is designed for riders who demand maximum efficiency and glide, downwind and prone surf enthusiasts, those who want a foil capable of flying further with minimal effort, and experienced foilers eager to explore a high-aspect setup. The intermediate size of the Front Wing (953 cm², AR 10.2) makes it a versatile option, sitting perfectly between the faster 847 and the earlier take-off 1077. This complete foil is capable of addressing five distinct disciplines: wing foil, surf foil, pump foil, SUP foil, and downwind.
| Specifications | |
|---|---|
| Sabfoil Reference | KR-977-375-75/BB |
| Range | Blackbird |
| Range | Razor |
| Type | Integrated Backtail (integrated fuselage) |
| Disciplines | Wing foil, Surf foil, Pump foil, SUP foil, Downwind |
| Recommended for | Freeride, Dock-Start, Downwind, SUP, Pumping |
| Front Wing, Wingspan | 977 mm |
| Front Wing, Surface | 953 cm² |
| Front Wing, Aspect Ratio | 10.2 |
| Front Wing, Root Chord | 119 mm |
| Front Wing, Maximum thickness | 16.7 mm |
| Stabilizer, Wingspan | 375 mm |
| Stabilizer, Surface | 130 cm² |
| Stabilizer, Aspect Ratio | 10.4 |
| Stabilizer, Root Chord | 50 mm |
| Stabilizer, Maximum thickness | 7.7 mm |
| Fuselage, Total length | 650 mm |
| Mast Height | 750 mm |
| Mast, Construction | UHM Carbon + W-Core |
| Mast, Board Connection | Carbon Plate |
| Total Weight (approx.) | 3.7 kg |
| Take-off speed | 10 to 12 knots |
| Top speed (80 kg rider) | 22 to 24 knots |
| Color | Black |
FAQ: SABFOIL RAZOR 977 BLACKBIRD INTEGRATED KIT
Sabfoil introduces the KR-977-375-75/BB as an allround complete foil kit, perfectly positioned between the Razor 847 and the Razor 1077. This versatile kit excels across five riding disciplines: Wing foil, Surf foil, Pump foil, SUP foil, and Downwind. It's highly recommended for Freeride, Dock-Start, Downwind, SUP, and Pumping.
All three complete foil kits share the same M75/BB mast. The key difference lies in the Front Wing surface area and Aspect Ratio: the 847 (784 cm², AR 9.2) is faster, with a Top End of 22-24 kn and a take-off speed of 13-15 kn. This 977 kit (953 cm², AR 10.2) sits in an intermediate position, with a take-off speed of 10-12 kn. The 1077 (1069 cm², AR 11) is for light wind and pumping. It has a take-off speed of 7-9 kn and a Top End of 19-21 kn. Both the 977 and 1077 kits share the same Downwind 375 stabilizer (SDW375/BB).
Sabfoil offers two configurations for the Razor 977 complete foil kit: the Integrated Backtail (KR-977-375-75/BB, this kit), which features the fuselage integrated into the Downwind 375 stabilizer, and the Modular Full Carbon (KR977-FCM-SDW375-75/BB), a modular configuration available at the same price of €1899. Sabfoil states that both versions deliver identical performance.
The SDW375/BB is a Sabfoil stabilizer with a high Aspect Ratio of 10.4, a wingspan of 375 mm, and a surface area of 130 cm². This is for downwind and long-distance pumping. It optimizes glide and minimizes hydrodynamic drag for sessions where efficiency is paramount. This stabilizer is also featured in the Razor 1077 Integrated kit.
Yes, this complete foil kit includes all necessary components: the WR977/BB Front Wing, the Downwind 375 stabilizer integrated into the fuselage, the Piantone Blackbird 75 mast, a Carbon Rail plate with titanium inserts (CP02K/Ti), and the complete screw set (MHQ02, MH144, MH160, MH164, MH171, MH173). You only need to provide your board.
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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