14 August. Friday 2026
GAS GAS TXT Pro 125 - 2012 Specifications and Reviews
The 2012 GAS GAS TXT Pro 125 is a lightweight trial motorcycle designed for competitive and recreational riders seeking precision handling and technical performance. Its liquid-cooled two-stroke engine and rigid chromoly frame deliver responsive power delivery and excellent maneuverability through challenging terrain. Best known for its exceptional balance and control in trial competitions, it remains a popular choice for riders developing advanced off-road skills.
General information | |
| Category | Trial |
| Year | 2012 |
| Model | GAS GAS TXT Pro 125 |
Engine and Transmission Specifications | |
| Clutch | GG 1/3 hydraulic-diaphragm-system |
| Transmission type,final drive | Chain |
| Gearbox | 6-speed |
| Cooling system | Liquid |
| Lubrication system | 2-stroke-oil/fuel mixed 1:50 |
| Ignition | CDI |
| Fuel system | Carburettor. Dell´Orto PHBL26BS - Intake by reed valve |
| Bore x stroke | 54.0 x 54.5 mm (2.1 x 2.1 inches) |
| Engine type | Single cylinder, two-stroke |
| Capacity: | 124.80 ccm (7.62 cubic inches) |
| | |
Brakes, suspension, Frame and wheels | |
| Wheels | Light aluminium spoke rim |
| Rear brakes diameter | 150 mm (5.9 inches) |
| Rear brakes | Single disc |
| Front brakes diameter | 185 mm (7.3 inches) |
| Front brakes | Single disc. Floating disk, 4-piston caliper |
| Rear tyre dimensions | 4.00-18 |
| Front tyre dimensions | 2.75-21 |
| Rear suspension travel | 164 mm (6.5 inches) |
| Rear suspension | Aluminium swingarrm, Progressive linkage system. Sachs hydraulic mono shock absorber |
| Front suspension travel | 177 mm (7.0 inches) |
| Front suspension | Marzocchi 40 mm Aluminium Right-Sight-Up |
| Frame type | Chrom-Molybdenum tubular frame |
Physical measures and capacities | |
| Fuel capacity | 2.50 litres (0.66 gallons) |
| Wheelbase | 1,340 mm (52.8 inches) |
| Overall width | 825 mm (32.5 inches) |
| Overall length | 2,045 mm (80.5 inches) |
| Overall height | 1,130 mm (44.5 inches) |
| Seat height | 650 mm (25.6 inches) If adjustable, lowest setting. |
| Dry weight | 66.0 kg (145.5 pounds) |
Other specs | |
| Maintenance | Find parts, fluids, filters, maintenance tools and service items on eBay |
| Color options | Red/white/black |
| Starter | Kick |
Performance Profile & Rider Fit
Best For
Track10%
City5%
Cornering60%
Daily Riding5%
Touring2%
Passenger0%
Rider Profile
| Best For | This is a specialist machine best suited to skilled or dedicated novice trials riders rather than someone wanting a first bike of any kind. |
| Purpose | Built purely for competitive and recreational observed trials riding, tackling rocks, logs, steep slopes and technical obstacles at walking pace. |
| Rider Fit | Its featherweight 66kg dry mass and low seat height make it extremely easy to manhandle, hop, and balance, though standing riding posture demands core strength and balance skills. |
| Character | A featherlight, razor-responsive two-stroke tool designed for tight throttle control and instant direction changes rather than outright speed or comfort. |
| Not Ideal For | This is not the bike for anyone wanting to ride on the road, cover distance, carry a passenger, or sit down for long periods. |
Character map is an editorial estimate based on this bike's specifications, not a lab-tested measurement.
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