| General |
| Comments | Model ID: CRF125F. | - |
| Colours | Red | Team Yamaha Blue |
| Warranty | Six Months transferable limited warranty | 30 Day Limited Factory Warranty |
| Dimensions |
| Ground Clearance (mm) | 211 mm | 361 mm |
| Height (in.) | 39.8 inches | 50.8 inches |
| Height (mm) | 1010 mm | 1290 mm |
| Length (in.) | 69.7 inches | 86.0 inches |
| Length (mm) | 1770 mm | 2184 mm |
| Ground Clearance (in.) | 8.3 inches | 14.2 inches |
| Seat Height (mm) | 739 mm | 975 mm |
| Wheelbase (in.) | 48.0 inches | 58.3 inches |
| Wheelbase (mm) | 1219 mm | 1481 mm |
| Width (in.) | 29.1 inches | 32.5 inches |
| Width (mm) | 740 mm | 826 mm |
| Seat Height (in.) | 29.1 inches | 38.4 inches |
| Seat Height | 739 mm / 29.1 in. | 975 mm / 38.4 in. |
| Wheelbase | 1219 mm / 48.0 in. | 1481 mm / 58.3 in. |
| Height | 1010 mm / 39.8 in. | 1290 mm / 50.8 in. |
| Length | 1770 mm / 69.7 in. | 2184 mm / 86.0 in. |
| Width | 740 mm / 29.1 in. | 826 mm / 32.5 in. |
| Weights & Capacities |
| Wet Weight (lbs.) | 194.0 pounds | 227.0 pounds |
| Wet Weight (kg) | 88.0 kg | 103.0 kg |
| Fuel Capacity (gal.) | 1.00 US gallons | 2.11 US gallons |
| Fuel Capacity (l) | 3.79 litres | 8.00 litres |
| Oil Capacity (l) | - | 0.80 litres |
| Oil Capacity (Quarts) | - | 0.85 US quarts |
| Fuel Capacity | 3.79 litres / 1.00 US gallons | 8.00 litres / 2.11 US gallons |
| Wet Weight | 88.0 kg / 194.0 lbs | 103.0 kg / 227.0 lbs |
| Performance |
| Max Torque | 10.2 Nm (1.0 kgf-m or 7.5 ft.lbs) @ 4500 Revolutions" | - |
| Engine |
| Bore x Stroke (in,) | 2.1 x 2.3 inches | 2.6 x 2.8 inches |
| Bore x Stroke (mm) | 52.4 x 57.9 mm | 66.4 x 72.0 mm |
| Displacement (ci) | 7.62 cubic inches | 15.19 cubic inches |
| Fuel Control | Single Overhead Cams (SOHC) | - |
| Engine Type | Single cylinder, four-stroke | Single cylinder, two-stroke |
| Displacement (cc) | 124.9 cc | 249.0 cc |
| Engine Detail | - | Reed-valve inducted |
| Fuel System | Injection. 22mm throttle bore | Carburettor. Hitachi Astemo® Keihin PWK38S |
| Compression Ratio | 9.0:1 | 10.6:1 |
| Emissions | Meets current California Air Resource Board (CARB) and EPA off-road emissions standards. | - |
| Engine Lubrication | - | Premix |
| Ignition | Full Transistorized | CDI |
| Starter | Electric | Electric |
| Valve System | 2 | - |
| Drivetrain |
| Final Drive | Chain (final drive) | Chain (final drive) |
| Gearbox | 4-speed | 5-speed |
| Primary Drive | Chain 13T/49T | Constant-mesh |
| Chassis |
| Wheel Travel - Rear (mm) | 140 mm | 315 mm |
| Wheel Travel - Rear (in.) | 5.5 inches | 12.4 inches |
| Wheel Travel - Front (in.) | 5.2 inches | 11.8 inches |
| Trail (mm) | 81 mm | 122 mm |
| Trail (in.) | 3.2 inches | 4.8 inches |
| Wheel Travel - Front (mm) | 132 mm | 300 mm |
| Frame Type | Diamond, steel | Semi-double cradle, aluminium |
| Suspension - Front | 31mm telescopic fork | KYB® Speed-Sensitive System inverted fork; fully adjustable |
| Suspension - Rear | Pro-Link single-shock | KYB® single shock; fully adjustable |
| Rake | 27.3° | 27.7° |
| Trail | 81 mm / 3.2 in. | 122 mm / 4.8 in. |
| Wheel Travel - Front | 132 mm / 5.2 in. | 300 mm / 11.8 in. |
| Wheel Travel - Rear | 140 mm / 5.5 in. | 315 mm / 12.4 in. |
| Wheels & Brakes |
| Brakes - Front | Single disc. Hydraulic. | Single disc |
| Brakes - Rear | Expanding brake (drum brake) | Single disc |
| Rims | - | Dunlop® Geomax MX33 tyres |
| Tyres - Front | 70/100-17 | 80/100-21 |