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Technical Overview
2020 Gas Gas TrialGP 125 Technical Analysis & Specification Breakdown
Engineered by Gas Gas for the trial motorcycle segment, the 2020 Gas Gas TrialGP 125 relies on a 124.8 cc (7.6 cu in) liquid-cooled single cylinder, two-stroke powerplant. Internal engine geometry specifies a bore and stroke of 54.0 x 54.5 mm (2.1 x 2.1 inches).
On the scales, the TrialGP 125 measures 66.5 kg (147 lbs) dry. Rider ergonomics and chassis geometry center around a 630 mm (24.8 in) seat height — giving shorter riders and urban commuters confident flat-foot reach at traffic stops, combined with a 1,320 mm (52 in) wheelbase engineered for quick, flickable steering geometry. The 2.5-liter (0.7 US gal) fuel tank supports practical everyday commuting and weekend road stints.
Standover Height
630 mm (24.8 in)
Engine
Displacement124.8 ccm (7.62 cubic inches)
Engine TypeSingle cylinder, two-stroke
Bore x Stroke54.0 x 54.5 mm (2.1 x 2.1 inches)
Fuel SystemCarburettor. Dell´Orto PHBL26BS - Intake by reed valve
IgnitionCDI digital magnetic flywheel
Lubrication2.5 % Mixture
CoolingLiquid
Transmission
Gearbox6-speed
Final DriveChain (final drive)
ClutchGG 1/3 hydraulic-diaphragm-system
Chassis
Frame TypeChrom-Molybdenum tubular frame
Front SuspensionTECH with aluminium bar Ø 39
Front Travel167 mm (6.6 inches)
Rear SuspensionÖHLINS hydraulic mono shock absorber (2 ways). Rebound and spring pre-load ajustable.
Rear Travel174 mm (6.9 inches)
Wheelbase1320 mm (52.0 inches)
Wheels & Brakes
Front Tyre2.75-21
Rear Tyre4.00-18
Front BrakesSingle disc. Floating, 4-piston
Front Brake Ø185 mm (7.3 inches)
Rear BrakesSingle disc. 2-piston
Rear Brake Ø150 mm (5.9 inches)
WheelsIn aluminium with spokes.
Dimensions & Weight
Dry Weight66.5 kg (146.6 pounds)
Seat Height630 mm (24.8 inches) If adjustable, lowest setting.
Use this page to compare this motorcycle by its real specifications, not only by model name. Focus on the details that affect fit, comfort, handling, range and ownership.
Seat Height
Check the seat height against your inseam and riding posture before choosing a motorcycle.
Weight
Compare weight carefully because it affects low-speed handling, parking and confidence.
Fuel Capacity
Fuel capacity helps estimate touring range and how often you may need to stop.
Brakes
Brake setup is worth comparing if you ride in traffic, mountains or with a passenger.
Suspension
Suspension details can matter for comfort, road feel and long-distance riding.
Transmission
Transmission and final drive affect maintenance, smoothness and everyday usability.
