Product sheet updated May 2026
The Armstrong Performance MK II Carbon Mast is the new standard in the Armstrong lineup: a stiffer evolution of the Performance MK I with a refined 13.8 mm profile, delivering 30% more flex stiffness and 20% more torsional stiffness. This do-it-all carbon mast is designed for downwind, freestyle, and loaded turns. It's fully compatible with the Armstrong A+ system and comes with a 0.5° mast shim and all required hardware.
KEY INFORMATION
ARMSTRONG PERFORMANCE MK II CARBON MAST 13.8 mm
What we like
- Refined 13.8 mm profile: A reworked section delivers increased stiffness and a more efficient profile.
- +30% flex stiffness and +20% torsional stiffness compared to the Performance MK I.
- Integrated 0.5° angle: Pre-calculated geometry, supplied with a 0.5° mast shim for trim adjustment.
- Premium hardware: 316L stainless steel screws with a Rainbow Titanium coating and a titanium barrel nut.
- Do-it-all mast: Excels in downwind, freestyle, powerful turns, and provides precise feedback at high speed.
- Armstrong A+ compatible: Assembles without an adapter on the entire A+ range.
Available sizes
4 sizes:
72.5 • 79.5 • 86.5 • 93.5 cm
Riding Style
Do-it-all mast • Downwind • Freestyle • Powerful turns
Level
Advanced to expert riders.
Included / Not included
✓ Included: 0.5° mast shim, protective bag, complete titanium/316L stainless steel hardware kit, Torx T30 key.
✗ Not included: Front Wing, fuselage, stabilizer, board.
COMPARISON: THE ARMSTRONG CARBON MAST RANGE
| Criterion | MK II | Performance MK II | Performance-X |
|---|---|---|---|
| Profile | 15.8 mm | 13.8 mm, refined | 12 mm, ultra-thin |
| Chord | 116 mm | 114 mm | 106 mm |
| Mast angle | Standard | 0.5° integrated (shim included). | 0.5° integrated (shim included). |
| Construction | Carbon | Carbon (+30% stiffness) | UHM Carbon |
| Riding Style | Allround, daily use | Do-it-all, downwind / freestyle | Specialist: speed, pure glide. |
| Target Audience | All levels | Advanced to expert | Advanced to expert |
| Price from | €919 | €1,689 | €2,399 |
Verdict: The Performance MK II is the new mid-range standard: stiffer than the MK II and much more accessibly priced than the Performance-X, it's a versatile performer across all demanding disciplines. The right choice for stepping up to a performance mast without going for an ultra-specialist model.
DETAILED DESCRIPTION
The New Armstrong Standard
Armstrong positions the Performance MK II as the new standard in its range. This mast is a stiffer evolution of the Performance MK I, with a reworked section. The profile is now 13.8 mm thick (compared to 15.8 mm on the entry-level MK II and 12 mm on the specialist Performance-X), with a refined 114 mm chord. This all adds up to a more hydrodynamically efficient profile that can handle all demanding foil disciplines. It's the mast that experienced riders will use in the majority of conditions, without having to choose between stiffness and versatility.
+30% Flex Stiffness, +20% Torsional Stiffness
The figures from Armstrong are clear: +30% more flex stiffness and +20% more torsional stiffness compared to the Performance MK I. In practice, this translates to more precise feedback under your feet, solid confidence at high speeds, and a mast that won't flex in loaded turns. The Performance MK II offers fine, direct control, making it an excellent choice for experienced riders who want a direct feel for the water.
Integrated 0.5° Geometry and A+ System
Like the Performance-X, the Performance MK II has a built-in 0.5° mast angle and comes with a 0.5° mast shim for adjustment. This pre-calculated geometry optimizes the foil's hydrodynamic efficiency, so you don't need extra shims to get the standard trim. The 114 mm chord ensures geometric compatibility with A+ front wings and fuselages, keeping the wings within the same angle range as with other Armstrong performance masts. The mast connects directly to all wings, fuselages, and boards in the current Armstrong A+ range without an adapter.
The Do-It-All Carbon Mast
Armstrong describes the Performance MK II as the mast that does it all: downwind, freestyle, and powerful turns. It delivers on the promise of a high-end, versatile mast, ideal for an experienced rider who regularly switches between disciplines. The hardware is the same as the rest of the range: three M6 28.5 mm and five M7 26 mm screws in 316L stainless steel with a Rainbow Titanium coating, five M7 T-nuts, one 8 mm titanium barrel nut, and a Torx T30 key. A protective bag is also included.
VIDEOS
TESTS AND REVIEWS
ARMSTRONG PERFORMANCE MK2
The Performance MK2 (13.8 mm profile) is Hydro Gav's top pick, offering the best versatility-to-price ratio in the Armstrong range. It has more stiffness and support than the Carbon MK2, without the flagship price tag. So much so, he's torn between it and the Performance-X. He breaks down all three Armstrong masts in his full review.
Hydro Gav
YouTube Foil Tester
TECHNICAL SPECIFICATIONS
| Size | Length | Weight | Profile | Chord |
|---|---|---|---|---|
| 72.5 cm | 725 mm | 1 740 g | 13.8 mm | 114 mm |
| 79.5 cm | 795 mm | Not specified | 13.8 mm | 114 mm |
| 86.5 cm | 865 mm | Not specified | 13.8 mm | 114 mm |
| 93.5 cm | 935 mm | Not specified | 13.8 mm | 114 mm |
The weight provided by Armstrong is for the 72.5 cm size only. For other sizes, please refer to the manufacturer.
| Specifications | |
|---|---|
| Brand | Armstrong Foils |
| Model | Performance MK II Carbon Mast 13.8 mm |
| Type | Performance do-it-all carbon foil mast. |
| System | A+ Armstrong |
| Sizes | 72.5 / 79.5 / 86.5 / 93.5 cm |
| Profile (thickness) | 13.8 mm |
| Chord | 114 mm |
| Mast angle | 0.5° |
| Construction | Carbon (+30% flex stiffness and +20% torsional stiffness compared to the Performance MK I) |
| Screw set | 316L stainless steel with Rainbow Titanium coating + titanium barrel nut |
| Included | 0.5° mast shim, protective bag, complete screw set, Torx T30 key |
| Level | Advanced to expert |
FAQ - ARMSTRONG PERFORMANCE MK II CARBON MAST
The MK II is the carbon entry point (15.8 mm profile, 116 mm chord) for accessible versatility. The Performance MK II is the mid-range do-it-all mast (13.8 mm profile, +30% stiffness, 0.5° angle) for advanced to expert riders. The Performance-X is the specialist for speed and pure glide (12 mm profile, UHM carbon) for riders looking to extract maximum performance from their foil.
Yes, if your foil uses the Armstrong A+ system. The Performance MK II uses the standard A+ connection and assembles without an adapter on all current A+ range Front Wings, fuselages, and boards. Just check that your setup is A+ and not the older V1 system.
The 72.5 cm is the standard compromise between speed and handling for most conditions. The 79.5 cm gives you more clearance in chop. The 86.5 cm is suitable for downwind and more demanding conditions. The 93.5 cm is for long-distance pumping and large bodies of water where ride height is an advantage. To maximize responsiveness, choose the shortest length that suits your discipline.
The 0.5° mast shim is a wedge that fits between the mast and the board to fine-tune the foil's pitch. Armstrong provides the shim that matches the Performance MK II's nominal geometry (0.5° angle). This allows you to achieve the pitch the mast was designed for, or to make slight adjustments depending on the board you use.
In practice, this means more precise feedback underfoot and more confidence at high speeds. The mast flexes less in loaded turns, resulting in better tracking and more predictable handling under heavy load (downwind, freestyle, powerful turns). For any rider pushing their foil, it's a real gain in control.
GlissEvolution has over 20 years of expertise in board sports. Our passionate team of advisors tests the gear on the local spots of La Baule and Pornichet. We offer responsive, France-based after-sales support, a 2-year warranty, and free shipping on orders over €150 (conditions apply).
▶ Need some advice?
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