Unifoil Hydrofoils
High Modulus Katana 830 Carbon Mast with cover
High Modulus Katana 830 Carbon Mast with cover
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The next evolution of our original Katana 830. This new construction uses high modulus carbon to deliver an even more direct, super-stiff feel with the same Katana focus on speed, strength, and precision.
The Katana 830 High Modulus Carbon Mast is the next evolution of our original Katana 830 construction—built for riders who want the most locked-in, high-performance feel possible. This updated version introduces a new construction using high modulus carbon, delivering an even more direct connection with reduced twist and flex under load.
The Katana concept was inspired by traditional Japanese sword making. To forge the toughest blades, swordsmiths combined an outer layer of hard steel with a tougher core for strength. In the same spirit, Katana uses advanced carbon layups to create a mast that feels super-stiff, built for real-world riding, not just lab numbers.
Combined with one-piece construction and a slightly thicker performance profile, Katana is tuned to reduce twist and flex for a more precise ride—especially noticeable with larger wings where mast stiffness directly affects control, pump, and top-end confidence.
Katana also features slotted holes designed for countersunk titanium hardware for cleaner alignment and fitment. The taper-lock mast-to-fuse connection improves engagement and helps eliminate play by holding the mast mechanically—so you’re not relying on bolts alone to carry load.
Cover included — every Unifoil mast ships with a protective cover.
Bolts sold separately.
Performance highlights
• Updated from the original Katana 830 with a new high modulus carbon construction
• Super-stiff feel for maximum control and response
• Thicker chord/profile to reduce twist and flex
• Direct, locked-in connection for high-speed precision
• One-piece construction for strength and performance
• Slotted, countersunk hardware interface for cleaner fitment
• Taper-lock mast-to-fuse connection for a more secure, no-play fit
Best for
• High-aspect setups where stiffness improves performance and confidence
• Winging, downwind, pump, and fast surf foiling
• Riders who want less twist under load and a more direct feel
• Anyone upgrading from the original Katana construction to the new high modulus build
Specs (Katana 830 High Modulus Carbon Mast)
• Length: 830 mm
• Average weight: 2.21 kg (4.88 lb) (may vary slightly)
• Hardware: slotted holes accept countersunk titanium hardware
• Optional: titanium wingnuts for adjustments on the fly
(Bolts sold separately)
| Length | 830 mm |
| Chord at Base | 150 mm |
| Chord at Fuse | 115 mm |
| Max Thickness at Base | 19 mm |
| Max Thickness at Fuse | 14.5 mm |
| Weight | 2.21 kg / 4.88 lbs |
| Construction | High Modulus Carbon, One-Piece |
| Hardware | Countersunk Titanium |
| Connection | Taper-Lock |
| Compatible Wings | All UniFoil wings |
| Includes | Cover |
The next evolution of Katana.
High Modulus. Higher Connection.
A new construction built around high modulus carbon — engineered for riders who want the most locked-in, direct feel possible. Reduced twist, less flex under load, and a more immediate connection between your input and the foil. Same Katana focus on speed, strength, and precision. Sharper edge.
Forged like a blade.
Stiffness Where It Counts
Inspired by traditional Japanese sword making — hard outer layers wrapped around a tougher core. Advanced carbon layups, one-piece construction, and a slightly thicker performance profile work together to kill twist and flex. The difference shows up where it matters most: large wings at speed, where mast stiffness directly controls pump, precision, and top-end confidence.
Mechanical engagement. No play.
Taper-Lock Connection. Titanium Ready.
Slotted holes accept countersunk titanium hardware for cleaner alignment and tighter fitment. The taper-lock mast-to-fuse connection holds the mast mechanically — so load passes through the joint itself, not just the bolts. The result is a setup that stays locked in, ride after ride, with zero slop in the most critical interface on your foil.
