Page updated May 2026
Blackbird Razor 977-375-75 hydrofoil complete set. This full carbon Blackbird set offers 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. Smooth, fast, and incredibly efficient.
KEY INFORMATION
SABFOIL RAZOR 977 BLACKBIRD COMPLETE FOIL KIT, INTEGRATED BACKTAIL
What we like
- Razor 977 high-aspect front wing: With 953 cm² and an AR of 10.2, it sits perfectly between the 847 and 1077 models for maximum versatility.
- Downwind 375 Stabilizer (SDW375/BB): At 130 cm² with an AR of 10.4, it's designed for pumping and long-distance downwind runs.
- Early takeoff from just 10-12 knots, with a top speed of 22-24 knots.
- Blackbird 75 mast: Made from UHM Carbon + W-Core, its compact 750 mm height is ideal for surf foil.
- MONOBLOC Full Carbon construction: Designed to minimize flex and torsion.
- 5-discipline versatility: Excels in Wing, Surf, Pump foil, SUP foil, and Downwind.
Kit Type
Integrated Backtail
Colorway
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)
- ✗ Protective bag (sold separately)
DETAILED DESCRIPTION
Extreme Glide, Uncompromising Efficiency
The Razor line is designed for riders looking for a pure, fluid, and continuous flying experience. This high-aspect front wing is built to provide exceptional glide, unparalleled pumping capability, and outstanding performance in downwind and prone surf.
Power, Flow, and Precision in One Profile
Every detail of the Razor's design is optimized to turn your input into pure speed and precise directional control. The result is an ultra-efficient front wing, able to maintain clean and stable water flow even through the most delicate transitions. It offers infinite glide from its high-aspect profile, surprising pumping power for its size, incredible speed and control over long distances, and a fluid response in carves and turns. This 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, combine it with the Blackbird Back Tail fuselages for maximum modularity.
Blackbird Technology, Designed to Perform
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 transfers. Active Lift and trim optimization: the front wing generates extra lift, allowing for earlier takeoff and reducing 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. MONOBLOC Full Carbon construction: the integrated one-piece connection between the front wing, fuselage, and tail guarantees minimal flex and torsion for direct feedback and a connected ride feel.
Who is it for?
The Razor 977 Integrated kit is for riders who want maximum efficiency and glide. It's ideal for downwind and prone surf enthusiasts, anyone looking to fly further with less effort, and experienced foilers wanting to try a high-aspect setup. The front wing's intermediate size (953 cm², AR 10.2) makes it a versatile option, positioned between the faster 847 and the 1077, which offers earlier lift. This complete foil performs across five disciplines: wing foil, surf foil, pump foil, SUP foil, and downwind.
| Specifications | |
|---|---|
| Sabfoil Product Code | 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 Area | 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 Area | 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 positions the KR-977-375-75/BB as an allround foil kit sitting between the Razor 847 and the Razor 1077. It covers five disciplines: Wing foil, Surf foil, Pump foil, SUP foil, and Downwind. It is recommended for Freeride, Dock-Start, Downwind, SUP, and Pumping.
All three kits use the same M75/BB mast. The main difference is the front wing's 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 of 13-15 kn. This 977 kit (953 cm², AR 10.2) is the intermediate option, with a take-off of 10-12 kn. The 1077 (1069 cm², AR 11) is for light wind and pumping, with a take-off of 7-9 kn and a top end of 19-21 kn. Both the 977 and 1077 kits use the same Downwind 375 stabilizer (SDW375/BB).
Sabfoil offers two configurations for the Razor 977 kit: the Integrated Backtail (KR-977-375-75/BB, this kit), with the fuselage integrated into the Downwind 375 stabilizer, and the Modular Full Carbon (KR977-FCM-SDW375-75/BB), a modular setup available for 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 375 mm wingspan, and a 130 cm² surface area. It is specifically designed for downwind and long-distance pumping, optimizing glide and minimizing drag for sessions where efficiency is the priority. It is also used on the Razor 1077 Integrated kit.
Yes, the kit includes all the 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). All you need is a board.
Sabfoil offers the Cover Mast A bag (product code MA021) for the M75/BB mast; it is compatible with the M63K, M73K, M73PLK, M75BB, and M76. For the front wing, Sabfoil has the Cover Front Wing D bag (product code MA028), which is compatible with the WR847, WR977, WR1077, WB800, WB1000, WR880, WR980, WRP875, WRP975, WRP1075, and W1110.
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