GAS GAS TrialGP 125 - Specifications & Review

TrialGP 125

Article Complete Info

Articleid641971
CategoryTrial
MakeGAS GAS
ModelTrialGP 125
Year2020

Chassis, Suspension, Brakes & Wheels

FrametypeChrom-Molybdenum tubular frame
FrontbrakesSingle disc. Floating, 4-piston
Frontbrakesdiameter185 mm (7.3 inches)
FrontsuspensionTECH with aluminium bar Ø 39
Fronttyre2.75-21
Frontwheeltravel167 mm (6.6 inches)
RearbrakesSingle disc. 2-piston
Rearbrakesdiameter150 mm (5.9 inches)
RearsuspensionÖHLINS hydraulic mono shock absorber (2 ways). Rebound and spring pre-load ajustable.
Reartyre4.00-18
Rearwheeltravel174 mm (6.9 inches)
WheelsIn aluminium with spokes.

Engine & Transmission

Borexstroke54.0 x 54.5 mm (2.1 x 2.1 inches)
ClutchGG 1/3 hydraulic-diaphragm-system
CoolingsystemLiquid
Displacement124.80 ccm (7.62 cubic inches)
EnginedetailsSingle cylinder, two-stroke
FuelsystemCarburettor. Dell´Orto PHBL26BS - Intake by reed valve
Gearbox6-speed
IgnitionCDI digital magnetic flywheel
Lubricationsystem2.5 % Mixture
TransmissiontypefinaldriveChain

Other Specifications

ColoroptionsRed/black/white
CommentsSpanish bike.
StarterKick

Physical Measures & Capacities

Dryweight66.5 kg (146.6 pounds)
Fuelcapacity2.50 litres (0.66 gallons)
Overallheight1,130 mm (44.5 inches)
Overalllength2,010 mm (79.1 inches)
Overallwidth825 mm (32.5 inches)
Seatheight630 mm (24.8 inches) If adjustable, lowest setting.

About GAS GAS

Country of Origin: Spain
Founder: Narcís Casas & Josep Pibernat
Best Known For: World-class trials bikes and competitive enduro/motocross machines; later KTM Group era

Company History

GASGAS was born in Catalonia’s trials heartland in the 1980s, when dealers Narcís Casas and Josep Pibernat turned their experience supporting riders into a purpose-built brand for observed trials. The early TXT models balanced featherweight agility with tractable torque, letting riders hop, pivot, and climb with uncanny control. Success in trials bled into enduro and later motocross, where two-strokes like the EC series earned reputations for crisp response and neutral handling on tight Iberian terrain. Financial turbulence in the mid-2010s led to restructuring, and in 2019 the KTM Group acquired and relaunched GASGAS globally. Under the red livery, modern GASGAS enduro, MX, and cross-country machines share core platforms with Austrian cousins but retain their own setup philosophy and playful brand voice. Trials remains a pillar, with competition-proven bikes that continue Spain’s dominance. The rally program—including Dakar entries—underscored the new era’s ambition. Historically, GASGAS represents the Catalan craft of light, communicative chassis that reward technique, and the brand’s second life shows how heritage and scale can coexist: a boutique trials specialist that grew into a full-line off-road contender without losing the fun, free-riding personality that made it famous.

Other Years

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