One-Lock Pro HM Carbon Mast

The Slingshot One-Lock Pro HM Carbon Mast is a high-performance foil mast built from high modulus carbon fiber, positioned at the top of Slingshot's mast lineup. Available in a single 102 cm length, it sits above the standard One-Lock HM Carbon Mast series and targets riders seeking maximum stiffness and speed from their foil setup. The mast uses Slingshot's One-Lock internal connection system, which keeps hardware and seams away from water flow for a cleaner hydrodynamic profile.

Slingshot engineered the Pro HM with a solid core layup and a tapered chord that narrows from 145 mm at the base to 118 mm at the foot. This lowered average chord is intended to increase yaw responsiveness, giving riders quicker directional changes at speed. The mast ships with a protective cover and an RTS (Ready to Shred) Complete Kit for simplified assembly.

• Length: 102 cm
• Weight: 2.22 kg
• Material: High Modulus Carbon
• Core: Solid core layup
• Chord taper: 145 mm (base) to 118 mm (foot)
• Connection: One-Lock internal connection
• Mounting options: Flush Mount (T30 Torx), T-Lock, or RTS
• Included: Protective cover, RTS Complete Kit

The Pro HM Carbon Mast is aimed at advanced kite foilers and experienced wing foilers who prioritize stiffness and direct feedback over forgiveness. At 102 cm, it provides generous ride height suited to riders comfortable managing a taller mast in varied conditions, including chop and swell where the extra clearance helps maintain a smooth ride above the surface.

The solid core construction and high modulus carbon layup deliver high longitudinal and torsional rigidity, which translates to precise input response at speed. Riders focused on top-end acceleration, tight carving lines, and efficient energy transfer through the foil stack will find this mast well-matched. It is not designed as a learning tool — newer foilers would benefit from shorter, more forgiving options lower in the Slingshot range.

Within Slingshot's current mast catalog, the Pro HM Carbon Mast sits at the flagship tier. Below it, the standard One-Lock HM Carbon Mast shares the high modulus carbon construction but is offered in shorter lengths — 72 cm, 82 cm, and 92 cm — at lower price points ranging from $1,429 to $1,629. Slingshot also offers a One-Lock Carbon Mast line using standard-modulus carbon for riders who want carbon weight savings without the premium of the HM layup.

All three mast tiers share the One-Lock connection interface, so riders can swap between them on the same fuselage and board without changing hardware. The Pro HM's 102 cm length and solid core construction distinguish it as the stiffest, tallest option in the ecosystem, filling the role of a dedicated race or high-performance freeride mast for riders already invested in Slingshot's One-Lock platform.