| Attribute | Value |
| General |
| Production from | 2006 year |
| Make | GAS GAS |
| Model | GAS GAS TXT 125 Pro |
| Category | Trial |
| Engine and transmission |
| Engine type | Single cylinder, two-stroke |
| Valves per cylinder | Add |
| Fuel system | Carburettor. Dell´Orto PHBHL 26 BS. |
| Engine details | Add |
| Displacement | 124.8 cm³ |
| Power | Add |
| Max RPM | Add |
| Fuel consumption | Add |
| Cooling system | Add |
| Transmission type,final drive | Chain |
| Torque | Add |
| Bore | 54 mm |
| Stroke | 54.5 mm |
| Gearbox | 6-speed |
| Greenhouse gases | Add |
| Fuel control | Add |
| Emission details | Add |
| Driveline | Add |
| Ignition | CDI Kokusan, digital magnetic flywheel. |
| Clutch | Command hidrulic of 1/3 discs progressif variable with diafragm of Gas Gas* (Patented) |
| Lubrication system | Engine oil continuous with bypass. |
| Compression | Add |
| Exhaust system | Add |
| Chassis |
| Front suspension | 40 mm adjustable telehidraulic Marzocchi* fork. |
| Rear suspension | Variable progressive system with single Sachs* shock absorber. |
| Front brakes | Single disc |
| Rear brakes | Single disc |
| Diameter | 150 mm |
| Frame type | Eliptic profile in CrMo. |
| Front tyre | Add |
| Rear tyre | Add |
| Seat | Add |
| Wheels | Add |
| Front wheel travel | Add |
| Rear wheel travel | Add |
| Trail | Add |
| Rake (fork angle) | Add |
| Other |
| Battery capacity | Add |
| Starter | Kick |
| Color options | Add |
| Carrying capacity | Add |
| Light | Add |
| Instruments | Add |
| Electrical Voltage | Add |
| Dimensions |
| Wheelbase | 1,330 mm |
| Kerb weight | Add |
| Dry weight | 65 kg |
| Power/weight ratio | Add |
| Overall height | Add |
| Overall length | Add |
| Overall width | Add |
| Seat height | 665 mm |
| Alternate seat height | Add |
| Ground clearance | Add |
| Front percentage of weight | Add |
| Rear percentage of weight | Add |
| Performance |
| Top speed | Add |
| Acceleration 0-100 km/h | Add |
| Length | Add |
| Reserve fuel capacity | Add |
| Fuel capacity | 3.1 l |
| Oil capacity | Add |
| Width | Add |
| Height | Add |