2018 GAS GAS TXT GP 300 Technical Analysis & Specification Breakdown
At the heart of the 2018 GAS GAS TXT GP 300 trial motorcycle, GAS GAS pairs a 294 cc (17.9 cu in) liquid-cooled single cylinder, two-stroke architecture with road-focused gearing. Internal engine geometry specifies a bore and stroke of 79.0 x 60.0 mm (3.1 x 2.4 inches).
On the scales, the TXT GP 300 measures 67 kg (148 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.
Within MotoLibrary's GAS GAS archive, this model family spans 6 indexed model years from 2017 to 2025, allowing buyers to track year-over-year changes in emissions tuning, weight and equipment.
Standover Height
630 mm (24.8 in)
Engine
Displacement294.0 ccm (17.94 cubic inches)
Engine TypeSingle cylinder, two-stroke
Engine DetailsReed valve.
Bore x Stroke79.0 x 60.0 mm (3.1 x 2.4 inches)
Fuel SystemCarburettor. Keihin PWK 28
IgnitionCDI digital magnetic flywheel
CoolingLiquid
Transmission
Gearbox6-speed
Final DriveChain (final drive)
ClutchGG 1/3 hydraulic-diaphragm-system
Chassis
Frame TypeChrom-Molybdenum tubular
Front SuspensionTECH with aluminium bar Ø 39. Rebound, compression, end stroke and spring preload regulation.
Front Travel180 mm (7.1 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. NG WAVE floating, monoblock 4 pistons BRAKTEC caliper
Front Brake Ø185 mm (7.3 inches)
Rear BrakesSingle disc. NG WAVE, autostand system 2 pistons BRAKTEC caliper
Rear Brake Ø150 mm (5.9 inches)
WheelsMichelin Trial X11 tyres
Dimensions & Weight
Dry Weight67.0 kg (147.7 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.
