Frequently asked questions
Straight answers on the REVSTAR system, connections, choosing parts, buying direct and care. Still stuck? support@oxzawind.com.
The REVSTAR system
What is REVSTAR?
REVSTAR is OXZA's modular hydrofoil system: frontwings, masts, fuselages, stabilizers and connection hardware designed together so any compatible combination rides as one piece. It covers windsurf-foil, parawing and wingfoil.
What do the letters A, Z and X mean?
The capital letter is the family. A = Alpha, the proven do-everything line. Z = Zenith, the newest performance line. X = Experimental, still in iteration. The family is not the connection — a wing's connection (T8, EZ) is about what it bolts to, and both Alpha and Zenith wings exist in more than one. The two numbers are span in mm and area in cm², and the lowercase letter at the end is what the wing is best at: s speed, g glide, u upwind, l lift, c carve. REVSTAR-A 630-560s is the Alpha wing that spans 630mm, carries 560cm² and is best at speed.
What is the difference between the family and the trait letter?
The capital letter at the front is the family — Alpha, Zenith or Experimental — and it is the whole categorisation: it says which line the wing belongs to and what it is built for. The lowercase letter at the end is what that particular wing is best at, so an Alpha and a Zenith can both be best at speed and still ride nothing alike. Every REVSTAR wing is an anhedral moustache outline, the centre carrying high with the tips swept down; the families differ in wedge and tip.
Who makes OXZA foils?
OXZA is a windsurf brand and builds REVSTAR in Hood River, Oregon, in the Columbia River Gorge. It was founded by Tony Logosz, who has been shaping since 1981, ran design at Slingshot Sports from 1999 to 2024, and is the named inventor on six US patents. Gear is sold direct to riders.
What is TRON-X?
TRON-X is the construction identity behind every REVSTAR part — carbon, aluminium and titanium laid up, machined and finished in-house. OXZA does not publish layup schedules, resin systems or fibre orientation.
Connections: OX, T8, T8C, KT, Armstrong, EZ, MTC
What is OX Lock?
OX Lock is OXZA's quick-connect between wing, fuselage and mast. The bending load sits on a machined shoulder, so bolts only clamp — lower torque, higher stiffness, no play over time. Fourteen revisions in.
What is T8 and will my T8 gear work?
T8 is the wing-to-fuselage interface used by SAB, Phantasm-style and other foils. Every REVSTAR Alpha wing, three of the Zenith wings, and every FU600 / FU700 / FU860 fuselage is available in T8, so you can keep your mast and migrate one part at a time. Connection and family are separate choices — check the connection badge on the wing, not its letter.
Do all REVSTAR wings fit all REVSTAR fuselages?
No. The wing and the fuselage must share a connection: T8 wings go on T8 fuselages. EZ wings use their own interface, so ask before ordering. Material never changes fit — an aluminium and a titanium FU700 T8 take the same wings and masts.
Can I put a T8 wing on an OX fuselage?
No. OX and T8 are not cross-compatible and OXZA does not make an adapter — an adapter adds a joint, and removing joints is the point of OX Lock. Buy the fuselage in the connection your wings use.
What is T8C?
T8 chopped: the T8 connection on a fuselage with a shorter nose. It takes the same T8 frontwings as T8. It is coming soon as a stock OXZA fuselage, and you can order it today as a custom build.
I ride KT or Armstrong frontwings. Can I use an OXZA fuselage?
Soon. KT and Armstrong are those brands' own frontwing connections, and OXZA fuselages in both are coming, so you can fly the frontwings you already own on an OXZA fuselage. Neither can be ordered as a stock part yet; both are available now as custom builds. The compatibility chart on the support page lists every brand and the fuselage it needs.
What is EZ?
EZ is the connection on most Zenith (Z) wings and the Experimental speed wings. It has its own fuselage interface. Ask before ordering if you intend to mix EZ wings with T8 or OX fuselages.
What does an MTC mast mount to?
MTC is the Twin-Connect mast. Its board-side head accepts a pedestal or a tuttle box, so one mast works across boards with different mounts. MTC comes in one length, 85 cm, and is coming soon.
Choosing parts
Which frontwing should a beginner buy?
An Alpha wing. Riders 75–95 kg start on the REVSTAR-A 901; heavier riders or light wind go A 1001; lighter or more powered riders go A 801. Read the first-foil guide in the Journal for the full path.
What mast length should I get?
84–94 cm covers most wingfoilers. 74 cm is a learning tool for flat water. 104 cm for advanced wing and downwind. 110–128 cm for windsurf-foil freeride, 146 cm for windsurf-foil race.
Which fuselage length?
FU700 is the all-round default. FU600 for reactive, freestyle or speed. FU860 for glide, stability and big wings. FU1000 is titanium-only for windsurf race.
Aluminium, carbon or titanium?
Fit is identical. Aluminium 7075-T6 is the best value and very durable. Carbon saves weight. Titanium is stiffest and corrosion-proof. Start on AL and upgrade the fuselage later — the wings and mast carry over.
What is the difference between REVSTAR-M and REVSTAR-MX masts?
M is the standard thicker tapered profile — stable, trusted, supports the largest wings. MX is a thinner wetted profile for lower drag and a cleaner, faster feel; MXT is the same MX with a tuttle head. All of them bolt to every REVSTAR fuselage.
What is the FU1000 fuselage for?
Windsurf-foil race. It is titanium-only and OX-only, built for maximum stiffness under high load, and takes ST-S stabilizers only. It is coming soon.
What does a foil stabilizer do?
The stabilizer (rear wing) sets pitch stability and how the foil releases into turns. A larger or more cambered stab is more stable and easier to pump; a smaller, flatter stab is faster and looser.
How do I read a REVSTAR stabilizer name?
Line, then span and area, then what it is best at. ST-A 350-165c is the Allround stabilizer carrying 165 cm² on a 350 mm span, cut to carve. It is the same shape of name a REVSTAR frontwing carries.
Does aspect ratio matter more than size?
Yes. Area sets how much lift; aspect ratio sets how the wing makes it. High AR (11–13) glides and pumps efficiently but demands technique. Mid AR (7–9) is forgiving and progressive. Pick family, then AR, then size.
Why are the Experimental (X) specs blank?
The three Experimental speed wings now carry measured span and area — 621-385, 681-451 and 781-551 — but aspect ratio is still open while the geometry finishes. A spec publishes when it is measured, not when it is estimated, so a blank means absent rather than withheld.
Buying direct
Why doesn't OXZA sell through dealers?
Direct removes the distributor, dealer and rep layers between the workshop and the rider. Prices are what the gear costs plus what it takes to build the next one.
Where do you ship?
Orders ship direct from Hood River, Oregon. US shipping is live at launch; international shipping is being added by region. Email orders@oxzawind.com for your country.
What currency are prices in?
US dollars.
What is the warranty?
Two-year structural warranty on carbon parts. Hardware and consumables are replaced at cost. Impact damage is assessed case by case.
Can I visit the workshop?
Yes. If the door in Hood River is open, come in.
Care and hardware
How tight should the bolts be?
Snug plus a quarter turn with a 6 mm key — hand-tight, not wrench-tight. Never use a power driver on titanium into aluminium; it galls the thread.
Do I need anti-seize?
Yes — a small amount of marine anti-seize or Tef-Gel on every thread, every assembly, especially titanium into aluminium.
How do I look after the foil?
Rinse in fresh water after salt, break down and re-grease every few weeks, inspect threads for galling, store dry and disassembled over winter.
How do I order a replacement part?
Email support@oxzawind.com with the SKU printed on the part and a photo. Bolt kits and spares ship direct; structural parts are assessed first.
Sizing and geometry
How much does board thickness change a foil setup?
Directly, because the board is part of the height you ride. True foil height runs board-bottom to fuselage-bottom; true rider height adds the board on top. Carry 85 cm of foil height under a typical 13 cm board and your feet are 98 cm up; under a 10 cm board, 95; under a 7 cm board, 92. Nothing under the water changed.
Where does a foil mast measurement start and stop?
Nowhere agreed, and that is the trouble. Brands begin and end the tape in different places, so two masts both labelled 85 cm can hang the foil at different depths. Measure the assembled setup instead — board-bottom to fuselage-bottom, and deck to fuselage-bottom.
Should I change foil mast length when I change boards?
Check the total rather than the component. Foil height plus board thickness is where your feet end up, and it is that sum which wants to stay in the range you like. Swap a typical board for a thin one and you drop several centimetres closer unless you put the difference back below.
What does a thinner foil board actually give you?
A budget to spend, not a single benefit. Keep the same foil height and ride with your feet closer to it, which feels more direct. Or put the thickness you saved back into true foil height — same true rider height, more usable foil below the board. Or split it between the two.
Should you compare frontwings by area?
Read it third. Area counts surface; it says nothing about where the lift comes from or how the wing rolls. Span is the number that predicts turn feel, the section decides low-speed lift, drag and top end, and area only describes how that lift is spread out.
Can a smaller frontwing out-lift a bigger one?
Yes, when its section carries more camber. A 600–650 cm² wing on a high-lift profile can match or beat a larger one built thin for low drag, and it will still change direction faster because there is less of it to swing.
What does a hydrofoil fuselage actually decide?
Three distances: frontwing to mast, mast to tail, and the reach the tail therefore has. The first sets where your weight meets the lift; the second sets how strongly the tail resists a pitch input. Bolt one wing to two fuselages and you get two foils.
How does fuselage length change the way a foil turns?
Yes, because length is stabilizer position. Bring the tail forward and the nose moves more freely, so the foil answers quicker and carves tighter; push it back and pitch is damped. Across REVSTAR that is 400 mm of travel, with nothing changed at the front.
What does a stabilizer shim actually change?
Its incidence — the angle it runs at — and therefore how much force it makes at a given speed. Because the tail works through the leverage the fuselage gives it, half a degree is enough to move the balance underfoot. REVSTAR stocks 0.5°, 1° and 1.5°.
Can a longer fuselage run a smaller stab?
It allows one, and that is the trade worth understanding. Leverage and force multiply together, so moving the tail further back buys the same pitch control at lower stabilizer load — and a lightly loaded stabilizer makes less drag as the speed comes up.
Why does OXZA name its wings by span?
How it rolls. Shorter span rolls more easily and feels quicker rail to rail; longer span sits more locked-in and takes more input. It is the most useful single number for turn feel, which is why OXZA names wings by span rather than area.
How fast do downwind bumps actually move?
Faster with every second of period. In deep water a 4 s bump's crest travels near 22 km/h, a 6 s one near 34, a 10 s one near 56 — and the set carrying them moves at half that pace, so any single crest leaves you before the set does.
What angle should you ride across swell on a downwinder?
Off the line of the swell, not along it. Holding one crest at 45° takes about 1.4 times its speed and at 60° twice its speed, so an angled line is how you go faster than the bump itself while making the same progress downwind.
Will 20 knots be enough for a downwinder?
Only with time and open water behind it. At 20 knots, about two hours over 10 km raises knee-high bumps, and around five hours over 40 km reaches waist height. Short of either, the wind is there but the bumps are not.
Does a longer wind period mean a faster downwind run?
Usually. The longer the bumps' period, the faster they travel: 3 seconds is near 17 km/h, 5 seconds near 28. Long, fast bumps let a smaller frontwing stay on them; short, slow ones call for the biggest, most gliding frontwing you own.
Team riders and collaborations
Does OXZA sponsor riders?
Yes. A small team rider program: REVSTAR on team terms, a personal code that pays a commission on every order using it, and a rider page — in exchange for sessions, content and feedback.
How do I become an OXZA team rider?
Apply on the collaborate page with your handles, links to your best content and three short answers on why you, your audience and what you would make. Tony reads every application and answers within about a week.
Can a brand sell through OXZA?
Not as a dealer. Gear Tony rides is listed on The Grid under Collabs and linked to the brand's own store. Brands can also co-develop a part with Tony or put gear through Hood River test days.