The Delta 4 offers the largest performance gain we have yet seen with the Delta model range whilst retaining the comfort and ease of use that has made this series the best-selling sport class wing of all time.
2-Liner technology in the wing tips significantly reduces drag while improving spanwise lift distribution.
A new lower-drag profile developed from the Mantra series with smaller openings and higher efficiency.
The D4 has a massive +12cm/s sink rate advantage over the D3 during full speed glides. In calm air, this results in a full glider-cone height gain every minute. In turbulence, the gain is larger as the D4 cuts through turbulence using gusts for altitude gain, much like a competition wing. The max speed of the D4 is 3kph faster, walking away from the D3 in accelerated flight.
Intuitive and efficient AoA control, an improved airfoil design, and optimised internal structure make the D4 an XC glide machine in turbulence. Its structure is the strongest we have yet made. Even in aggressive turbulence the profile remains undisturbed, retaining its shape and efficiency without performance loss from chordwise deformation.
New ACR System
The new Ozone Active Control Risers, inherited from the Mantra series, allows full AoA control throughout the speed range without deforming the camber of the profile. The ACR system acts on B & C lines giving 2-liner control with the comfort of a 3-liner design.