| Engine | Displacement | Power output (max.) |
| VERTICAL ENGINES | ||
| XT140 | 141 cc, (8.6 cu·in) | 3.9 HP at 3,600 rpm |
| XT160 | 159 cc, (9.7 cu·in) | 5.0 HP at 3,600 rpm |
| XT200 | 196 cc, (11.96 cu·in) | 6.5 HP at 3,600 rpm |
| HORIZONTAL ENGINES | ||
| XT097 | 97 cc, (5.92 cu·in) | 2.4 HP at 3,600 rpm |
| XT196 | 196 cc, (11.96 cu·in) | 6.5 HP at 3,600 rpm |
| XT270 | 270 cc, (16.48 cu·in) | 9.0 HP at 3,600 rpm |
| XT390 | 390 cc, (23.80 cu·in) | 13.0 HP at 3,600 rpm |
| XT420 | 420 cc, (25.63 cu·in) | 15.0 HP at 3,600 rpm |
