| Alpha 4 | 23 | 25 | 28 | 31 | |
| 2007 | 2007 | 2007 | 2007 | ||
| In-Flight-Weight | kg | 55 - 75 | 65 - 88 | 78 - 106 | 96 - 130 |
| Main-Use | Initiation | Initiation | Initiation | Initiation | |
| Certifications | ; | ; | ; | ; | |
| Naked-Pilot | kg | 50 | 61 | 75 | 94 |
| Wing-Load | kg/m² | 2,7 | 3,0 | 3,2 | 3,6 |
| Wing-Weight | kg | 5,3 | 5,6 | 6,1 | 6,6 |
| Area | m² | 23,66 | 25,59 | 28,47 | 31,79 |
| Area proj | m² | 20,27 | 21,92 | 24,39 | 27,23 |
| Span | m | 10,60 | 11,03 | 11,63 | 12,29 |
| Span proj | m | 8,45 | 8,79 | 9,27 | 9,80 |
| Ratio | 4,75 | 4,75 | 4,75 | 4,75 | |
| Ratio proj | 3,52 | 3,52 | 3,52 | 3,52 | |
| Rows | 4 | 4 | 4 | 4 | |
| Boxes | 27 | 27 | 27 | 27 | |
| Cells | 39 | 39 | 39 | 39 | |
| Closed Cells | 4 | 4 | 4 | 4 | |
| Lines Ø diam. | 1,9 mm; 1,5 mm; 1,4 mm; 1,2 mm | 1,9 mm; 1,5 mm; 1,4 mm; 1,2 mm | 1,9 mm; 1,5 mm; 1,4 mm; 1,2 mm | 1,9 mm; 1,5 mm; 1,4 mm; 1,2 mm | |
| Lines distance | m | 6,74 | 7,01 | 7,39 | 7,81 |
| Lines total | m | 306 | 315 | 332 | 356 |
| Flattening | % | 14 | 14 | 14 | 14 |
| Accelerated speed | km/h | 47 | 47 | 47 | 47 |
| Basic speed | km/h | 38 | 38 | 38 | 38 |
| Minimum speed | km/h | 22 | 22 | 22 | 22 |
| Best-Sink-Rate | m/s | 1,2 | 1,2 | 1,2 | 1,2 |
| Best-Glide-Ratio | 1,3 m/s - 36 km/h | 1,3 m/s - 36 km/h | 1,3 m/s - 36 km/h | 1,3 m/s - 36 km/h | |
| GR/Fmax Estimations | 7,9 - 8,2 (8,3 p) | 7,9 - 8,2 (8,3 p) | 7,9 - 8,2 (8,3 p) | 7,9 - 8,2 (8,3 p) | |
| Upper-Surface | S9092-E77A 45 g/m² | S9092-E77A 45 g/m² | S9092-E77A 45 g/m² | S9092-E77A 45 g/m² | |
| Under-Surface | S9017-E77A 40 g/m² | S9017-E77A 40 g/m² | S9017-E77A 40 g/m² | S9017-E77A 40 g/m² | |
| Lines type | Dyneema; Technora | Dyneema; Technora | Dyneema; Technora | Dyneema; Technora | |
| Risers | 5(2A+1A'/3B/4C/2D) | 5(2A+1A'/3B/4C/2D) | 5(2A+1A'/3B/4C/2D) | 5(2A+1A'/3B/4C/2D) | |
| Accelerator | cm | 13 | 14 | 14 | 15 |
| Trims | No | No | No | No | |
| Ears | m/s | 2 | 2 | 2 | 2 |
| B Lines | m/s | 6 | 6 | 6 | 6 |