The 2021 GAS GAS TXT Racing 125 is a lightweight two-stroke trial bike designed for competitive riders and those seeking technical off-road challenge. Known for its agility and precision handling, it excels in rocky terrain and demanding trial sections thanks to its responsive reed-valve engine and low seat height. Ideal for experienced trial enthusiasts seeking factory-level performance in a 125cc platform.
Editorial estimate from the spec sheet - not lab tested
Off-road & trail97%
Cornering60%
City riding5%
Daily riding5%
Touring3%
Two-up0%
Track10%
Best for
Built purely for competitive observed trials riding, tackling extreme low-speed technical obstacles rather than any form of transport or road use.
Built for
An ultra-light, razor-responsive two-stroke trials iron built for pinpoint control, explosive low-end grunt, and instant direction changes over rocks and obstacles.
Not ideal for
This bike is entirely unsuitable for anyone wanting a comfortable, fast, or practical machine for road, touring, or passenger use.
Scores are derived from the spec sheet using the same model across every bike, so they compare like for like.
Full specifications
Engine
Capacity
124.8 ccm
Power
15.0 HP (11.0 kW)
Engine type
Single, two-stroke
Power/weight ratio
0.2239 HP/kg (dry)
Bore x stroke
54.0 x 54.5 mm
Cooling system
Liquid
Fuel system
Injection
Starting
Kick
Ignition
CDI
Lubrication system
2-stroke-oil/fuel mixed 1:50
Transmission
Gearbox
6-speed
Transmission type
Manual
Final drive
Chain
Clutch
GG 1/3 hydraulic-diaphragm-system
Dimensions & weight
Wheelbase
1320 mm
Overall length
2010 mm
Overall width
825 mm
Overall height
1130 mm
Seat height
630 mm
Dry weight
67.0 kg
Fuel capacity
2.40 litres
Ground clearance
325 mm
Chassis & suspension
Frame
Chrome-moly tubular space frame, powder-coated
Front suspension
TECH with aluminium bar Ø 39
Rear suspension
REIGER hydraulic shock absorber with linkage
Front wheel travel
167 mm
Rear wheel travel
174 mm
Rake (fork angle)
23.0°
Brakes & wheels
Front brakes
Single disc. Monoblock 4 pistons BRAKTEC caliper, NG WAVE floating
Front brakes diameter
185 mm
Rear brakes
Single disc. 2 pistons BRAKTEC caliper, autostand system, NG WAVE
Rear brakes diameter
150 mm
Front tyre
2.75-21
Rear tyre
4.00-18
Other
Color options
Red/white/black
Comments
Spanish made bike.
Compiled from manufacturer documentation and user contributions, corrected on an ongoing basis. Spotted something wrong? Tell us.
What changed, year to year
Differences highlighted
Specification
2014
2016
2019
2021
2025
Capacity
125 cc
125 cc
125 cc
125 cc
125 cc
Dry weight
66 kg
66 kg
66 kg
67 kg
67 kg
Seat height
650 mm
650 mm
650 mm
630 mm
630 mm
Fuel capacity
2.5 L
2.5 L
2.5 L
2.4 L
2.4 L
Illustrative - generated automatically by diffing the year records already on file, not a manufacturer-published changelog.
Rider Reviews
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MotorcycleDB
The 2021 GAS GAS TXT Racing 125 is an impressive and high-performing motorcycle that is perfect for off-road adventures. This bike offers a 125cc engine that delivers powerful and responsive performance, making it an exciting choice for riders looking for a thrilling ride. With its lightweight and agile design, the TXT Racing 125 is easy to handle and maneuver on challenging terrains, providing an exhilarating experience for riders of all skill levels.
In addition to its exceptional performance, the GAS GAS TXT Racing 125 features a durable and stylish design that is sure to turn heads. Its modern and eye-catching aesthetics are complemented by top-notch components and advanced technology, ensuring a premium riding experience. Whether you're hitting the trails or competing in off-road races, the 2021 GAS GAS TXT Racing 125 is a top contender in its class and is an excellent choice for riders who demand nothing but the best.
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The 2021 GAS GAS TXT Racing 125 is an impressive and high-performing motorcycle that is perfect for off-road adventures. This bike offers a 125cc engine that delivers powerful and responsive performance, making it an exciting choice for riders looking for a thrilling ride. With its lightweight and agile design, the TXT Racing 125 is easy to handle and maneuver on challenging terrains, providing an exhilarating experience for riders of all skill levels.
In addition to its exceptional performance, the GAS GAS TXT Racing 125 features a durable and stylish design that is sure to turn heads. Its modern and eye-catching aesthetics are complemented by top-notch components and advanced technology, ensuring a premium riding experience. Whether you're hitting the trails or competing in off-road races, the 2021 GAS GAS TXT Racing 125 is a top contender in its class and is an excellent choice for riders who demand nothing but the best.
Please log in or register if you'd like to leave a comment.
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