2018 GAS GAS TXT GP 250 Technical Analysis & Specification Breakdown
Built around GAS GAS's trial motorcycle platform, the 2018 GAS GAS TXT GP 250 pairs a 247.7 cc (15.1 cu in) liquid-cooled single cylinder, two-stroke architecture with road-focused gearing. Internal engine geometry specifies a bore and stroke of 72.5 x 60.0 mm (2.9 x 2.4 inches).
On the scales, the TXT GP 250 measures 67 kg (148 lbs) dry. Rider ergonomics and chassis geometry center around a 650 mm (25.6 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
650 mm (25.6 in)
Engine
Displacement247.7 ccm (15.11 cubic inches)
Engine TypeSingle cylinder, two-stroke
Engine DetailsReed valve.
Bore x Stroke72.5 x 60.0 mm (2.9 x 2.4 inches)
Fuel SystemCarburettor
Lubrication2-stroke-oil/fuel mixed 1:50
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)
WheelsAluminium rims, wire spoked.
Dimensions & Weight
Dry Weight67.0 kg (147.7 pounds)
Seat Height650 mm (25.6 inches) If adjustable, lowest setting.
Overall Height1130 mm (44.5 inches)
Overall Length2010 mm (79.1 inches)
Overall Width825 mm (32.5 inches)
Fuel Capacity2.50 litres (0.66 US gallons)
Other
StarterKick
Color OptionsRed/white/black
Notes
Various carbon fiber parts. Limited edition. Spanish made bike.
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.
