Trials Bikes

2020GAS GAS TrialGP 125

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The 2020 GAS GAS TrialGP 125 is a lightweight Spanish trials bike designed for beginner to intermediate riders developing their technique on challenging terrain. Known for its exceptional maneuverability and low seat height of 24.8 inches, this compact machine excels in technical rock crawling and tight obstacles. Its minimal 146.6-pound weight and responsive handling make it ideal for riders learning precision balance and control.

Capacity: 124.8 ccm
Engine: Single, two-stroke
Gearbox: 6-speed
Dry weight: 66.5 kg
Seat height: 630 mm
Power: 15.0 HP (11.0 kW)

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How it rides

Editorial estimate from the spec sheet - not lab tested

Off-road & trail98%

Cornering60%

City riding5%

Daily riding5%

Touring3%

Two-up0%

Track5%

Best for: Built purely for competitive and recreational trials riding, where balance, throttle control, and obstacle negotiation matter far more than outright speed.
Built for: A featherweight, highly responsive two-stroke with premium suspension components that make it feel nimble, precise, and eager to hop, pivot, and climb over technical terrain.
Not ideal for: This is not the bike for anyone wanting a comfortable commuter, a highway tourer, or a passenger-friendly machine, since it lacks a real seat, luggage capacity, and sustained speed capability.

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: 0.2256 HP/kg (dry)
Bore x stroke: 54.0 x 54.5 mm
Cooling system: Liquid
Fuel system: Carburettor
Starting: Kick
Ignition: CDI digital magnetic flywheel
Lubrication system: 2.5 % Mixture

Transmission

Gearbox: 6-speed
Transmission type: Manual
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: 66.5 kg
Fuel capacity: 2.50 litres

Chassis & suspension

Frame: Chrom-Molybdenum tubular frame
Front suspension: TECH with aluminium bar Ø 39
Rear suspension: ÖHLINS hydraulic mono shock absorber (2 ways). Rebound and spring pre-load ajustable.
Front wheel travel: 167 mm
Rear wheel travel: 174 mm

Brakes & wheels

Front brakes: Single disc. Floating, 4-piston
Front brakes diameter: 185 mm
Rear brakes: Single disc. 2-piston
Front tyre: 2.75-21
Rear tyre: 4.00-18

Other

Color options: Red/black/white
Comments: Spanish bike.

Compiled from manufacturer documentation and user contributions, corrected on an ongoing basis. Spotted something wrong? Tell us.

Rider Reviews

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MotorcycleDB

The 2020 GAS GAS TrialGP 125 motorcycle is a top-of-the-line option for riders looking for a high-performance, reliable trials bike. With its powerful 125cc engine and lightweight frame, this bike delivers exceptional handling and control on a variety of terrains. The advanced suspension system and responsive brakes make it easy to navigate tight turns and obstacles, while the durable construction ensures long-lasting durability. Whether you're a seasoned competitor or a weekend warrior, the TrialGP 125 is a top choice for riders looking to take their skills to the next level.

Overall, the 2020 GAS GAS TrialGP 125 motorcycle offers an impressive combination of power, performance, and durability. Its advanced features make it a top choice for trial riders looking for a high-quality, reliable bike that can handle the challenges of off-road riding. With its sleek design and top-notch engineering, this motorcycle is sure to impress both seasoned riders and newcomers to the sport. If you're in the market for a trials bike that delivers on all fronts, the TrialGP 125 is definitely worth considering.

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