| 64-66 TwinPipe 250 | 67-69 SidePipe 250 | 70-72 YellowTank 250 | 73 "Radial" 250 | |
| Engine/Frame ID | 968 | 980 | 980.3 - 980.4 | 980.7 |
| Bore/Stroke (metric) | 70mm X 64mm | 70mm X 64mm | 70mm X 64mm | 70mm X 64mm |
| Stock Carb | 2930 sz12 | 30mm Jikov | 32mm Jikov | 33mm Jikov |
| Horsepower | 26 | 28 | 31 | 31 |
| Compression Ratio | 10.5:1 | 10.5:1 | ||
| Primary Drive | 2.304:1 (23/53) | 2.304:1 (23/53) | 2.304:1 (23/53) | 2.304:1 (23/53) |
| 1st Gear Ratio | 1.846:1 (13/24) | 1.846:1 (13/24) | 1.846:1 (13/24) | 2.45:1 (11/27) |
| 2nd Gear Ratio | 1.466:1 (15/22) | 1.47:1 (15/22) | 1.466:1 (15/22) | 1.85:1 (13/24) |
| 3rd Gear Ratio | 1.18:1 (17/20) | .072:1 (17/20) | 1.18:1 (17/20) | 1.46:1 (15/22) |
| 4th Gear Ratio | 0.95:1 (19/18) | 0.95:1 (19/18) | 0.95:1 (19/18) | 1.23:1 (17/21) |
| 5th Gear Ratio | n/a | 1.11:1 (18/20) | ||
| Teeth: C/S Sprocket | 14 | 14 | 14 | 14 |
| Teeth: Rear Sprocket | 62 | 62 | 62 | 52 |
| Susp Travel - Front | 6.7" | 6.7" | 6.7" | 6.7" |
| Susp Travel - Rear | 3.3" | 3.5" | 3.5" | 3.5" |
| Weight | 214 (Dry) | 238 (Wet) | 227 Dry | 227 Dry |
| Tires | 2.75X21, 4.00X18 | 2.75X21, 4.00X18 | 2.75X21, 4.00X18 | 2.75X21, 4.00X18 |
| Rims | 1.60X21, 1.85X18 | 1.60X21, 1.85X18 | 1.60X21, 1.85X18 | 1.60X21, 1.85X18 |
| Ignition ADV. | 2.8 - 3 BTDC | 2.8 - 3 BTDC | 2.8 - 3.0 BTDC | 2.8 - 3.0 |
| Fuel Capacity | 2.5 Gal | 2.5 Gal | 1.8 Gal | 2.5 Gal |
| Std Bore | 69.95mm | 69.95mm | 69.95mm | 69.95mm |
| 1st Over (+.25) | 70.20mm | 70.20mm | 70.20mm | 70.20mm |
| 2nd Over (+.50) | 70.45mm | 70.45mm | 70.45mm | 70.45mm |
| 3rd Over (+.75) | 70.70mm | 70.70mm | 70.70mm | 70.70mm |
| 4th Over (+1.00) | 70.95mm | 70.95mm | 70.95mm | 70.95mm |
| Price (MSRP) | N/A | $1,075 | N/A | N/A |
| 74 Red Frame 250 | 75-76 Falta 250 | 513 | 73 "ENDURO" 250 | |
| Engine/Frame ID | 980.9 | 980.5 | 513 | 988 |
| Bore/Stroke (metric) | 70mm X 64mm | 70mm X 64mm | 70mm X 64mm | 70mm X 64mm |
| Stock Carb | 33mm Jikov | 33mm Jikov | 36mm Jikov | 33mm Jikov |
| Horsepower | 24.5 | 26.8 | 25.8 | 24 |
| Compression Ratio | 10.5:1 | 11.5:1 | 12.2:1 | 9.5:1 |
| Primary Drive | 2.304:1 (23/53) | 2.304:1 (23/53) | 2.690 (21/55) | 2.304:1 (23/53) |
| 1st Gear Ratio | 2.45:1 (11/27) | 2.454:1 (11/27) | 1.846:1 (13/24) | 1.90:1 (9/28) |
| 2nd Gear Ratio | 1.85:1 (13/24) | 1.846:1 (13/24) | 1.466:1 (15/22) | 1.17:1 (13/25) |
| 3rd Gear Ratio | 1.46:1 (15/22) | 1.466:1 (15/22) | 1.294:1 (17/22) | 1.00:1 (15/22) |
| 4th Gear Ratio | 1.23:1 (17/21) | 1.235:1 (17/21) | 0.947:1 (19/18) | .072:1 (17/20) |
| 5th Gear Ratio | 1.11:1 (18/20) | 1.111:1 (18/20) | N/A | .061:1 (19/19) |
| Teeth: C/S Sprocket | 14 | 14 | 14 | 18 |
| Teeth: Rear Sprocket | 52 | 52 | 58 | 52 |
| Susp Travel - Front | 7.75" | 7.87" | 270mm | 6.7" |
| Susp Travel - Rear | 3.6" | 5.0" | 170mm | 3.5" |
| Weight | 231 Dry | 231 (Dry) | 107.5kg | 262 Dry |
| Tires | 2.75X21, 4.50X18 | 2.75X21, 4.25X18 | 3.00X21, 4.75X18 | 2.75X21, 4.00X18 |
| Rims | 1.60X21, 1.85X18 | 1.60X21, 1.85X18 | 1.60X21, 2.15X18 | 1.60X21, 1.85X18 |
| Ignition ADV. | 2.8 - 3.0 | 3.2 | 2.5mm | 2.8 - 3.2 |
| Fuel Capacity | 2.1 Gal | 2.1 Gal | 8 liters | 3 Gal |
| Std Bore | 69.95mm | 69.95mm | 69.95mm | 69.95mm |
| 1st Over (+.25) | 70.20mm | 70.20mm | 70.20mm | 70.20mm |
| 2nd Over (+.50) | 70.45mm | 70.45mm | 70.45mm | 70.45mm |
| 3rd Over (+.75) | 70.70mm | 70.70mm | 70.70mm | 70.70mm |
| 4th Over (+1.00) | 70.95mm | 70.95mm | 70.95mm | 70.95mm |
| Price (MSRP) | N/A | $1565 (75) | N/A | $1,295 |