| BIPLACE | DIAMOND 40 | DIAMOND 42 |
| Area flat [m2] | 40.15 | 42.05 |
| Area projected [m2] | 37.05 | 38.95 |
| Span flat [m] | 14.00 | 14.50 |
| Aspect ratio flat | 4.88 | 5.00 |
| Rood cord [m] | 3.60 | 3.60 |
| Cells | 52 | 54 |
| Weight [kg] | 9.50 | 10.00 |
| Weight range [kg]* | 130/190 | 145/210 |
| Min. speed [km/h] | 24 | 24 |
| Max. speed [km/h] | 39 | 39 |
| Top speed (accelerator) [km/h] | 46 | 46 |
| Gliding ratio | + 7.5 | + 7.5 |
| Min. Sink rate [m/s] | 1.20 | 1.20 |
| Tested size | * all-up weight | |
