Distinctive package

EX 250

EX 250

Base Price: 15,229.00 NZD*
Base Price: 15,229.00 NZD*
The EX 250 is the lightest bike in our Cross Country line up. Featuring the same highlights as it's bigger brother the EX 300, the smaller 250 takes it all easier. It's easier on your arms, easier on your wallet and easier on the trail. There is no need for premixing fuel or tedious jetting changes, the innovative electronic fuel injection system allows for true 'gas-and-go' riding simplicity. With significantly reduced emissions and extended fuel range, this is the easiest bike to enter the two stroke side of cross country.
Features & Benefits




The new 2023 Cross Country design is very red and features the very same graphics as found on our awesome motocross bikes! Enabling riders to feel at one with their bike while darting in and out of trees, the vibrant bodywork on all GASGAS cross country bikes is also a visual expression of our Spanish personality. Considered ergonomics allow unrestricted movement while our flat, high-grip seat profile delivers comfort and control in all conditions.


Allowing quick and easy filter changes, the airbox on all GASGAS cross country bikes is designed with precisely positioned inlet ducts that ensure maximum airflow and protection of the Twin Air filter. Ensuring perfect airflow to the engine guarantees maximum performance. The straightforward, no tools needed filter mounting system is super quick to use and 100 per cent reliable.


We fit high-quality Neken tapered handlebars to all of our cross country bikes. Ensuring rider comfort and control thanks to optimal pressure points on rider's hands, the left side ODI grip doesn't require gluing, while on the right, the vulcanized grip features an innovative integrated throttle mechanism. With easy to adjust free-play, by changing a cam, the progression of the throttle can also be altered.


Allowing riders to ride further and enjoy longer rides, all GASGAS cross country bikes feature 8.5-liter fuel tanks, 1.5 liters bigger than on our motocross bikes. Made from transparent polythene to allow riders to easily see how much fuel is inside the tank, a bayonet style filler cap is also used to provide a tight, reliable seal. With a specific routing keeping the external fuel line safe, all bikes are fitted with a fuel level sensor.

Features & Benefits




If you're going to race in the woods, you need to be tough! We build our frames to be tough using lightweight, laser-cut chromium molybdenum steel, which is robot welded for complete accuracy. We also ensure riders have complete confidence crossing tree roots and rocks thanks to specifically engineered flex. Together with proven geometry, our frames deliver playful handling and the very best stability and are finished with a durable, red powder coating.


With a short and compact profile all GASGAS cross country subframes are made from lightweight aluminum. The profile helps centralize mass while also keeping weight down.


Our triple clamps offer 4-way handlebar adjustment, which ensures riders of all sizes can accurately set the handlebars to best suit their needs. Featuring a 22mm offset the forged triple claps also ensure maximum stiffness for precise handling and front suspension action.


Set-up for woods competition, all GASGAS cross country bikes comes fitted with 48mm WP XACT front forks with AER technology, providing incredible front-end damping for complete rider control. Firm enough to consistently handle high-speed bumps while also supple enough to ensure outstanding comfort across rough, broken edged terrain, they feature easy access clicker dials for quick adjustments and perfect rider set-up. Effective internal wizardry ensures consistent damping no matter how rough the terrain.


Matched to the linkage system fitted to all GASGAS cross country bikes, the WP XACT rear shock deliver 300mm of rear wheel travel to ensure awesome handling, the very best traction and maximum fun in the woods. With specific internal settings giving riders complete confidence across a wide-range of offroad terrains, in offering full rebound and high/low-speed compression adjustability the shock can easily be fine-tuned to meet the needs of beginners and seasoned racers alike.


Exceptional strength at the lowest possible weight, and with visible chain adjuster marks to make chain adjustment quick and accurate. Our hollow, die-cast swingarms deliver durability and precision.

Features & Benefits




The 6-speed EX 250 features a high-performance offroad motor that in the hands of an expert racer can be used to power the bike up and across terrain few would imagine passable. The perfect bike for 2-stroke fun, it's lightweight construction, twin-valve controlled power valve, true cross country specific transmission ratios and vibration reducing balancer shaft combine to give the much loved 2-stroke a competitive edge. Keeping life easy, our innovative fuel injection system does away with the need for time consuming jetting changes while also reducing fuel consumption and emissions.


There's no need for pre-mixing fuel with the super-convenient EX 250! Instead, the bike features an electronic oil pump that feeds 2-stroke oil into the motor, keeping it lubricated via the throttle body. Using engine speed and throttle position sensor data, the engine management systems's precise control of the oil pump delivers the perfect amount of oil for any given conditions. The result? Reduced emissions by up to 50 per cent compared to a conventional pre-mix lubricated engine. The EX 250 maintains an average fuel-to-oil ratio of 80:1, which means one tank full of oil is enough for at least five tanks of fuel. Result!


The 66,4mm bore EX 250 cylinder features a Twin-Valve Controlled (TVC) power valve system, which delivers smooth and controlled power throughout the RPM range. Optimal exhaust port timing is achieved with the combination of the state-of-the-art, adjustable power valve drive and a machined exhaust port window. Additionally, the cylinder features two inlet positions located on the transfer ports at the rear of the cylinder where a pair of fuel injectors are mounted. Deliver the fuel downwards into the transfer port these injectors guarantee perfect atomization with the air travelling upward to the combustion chamber. This ensures a more efficient combustion resulting in reduced fuel consumption and emissions. We match a lightweight piston to the EX 250 cylinder to ensure the highest levels of reliability and performance. It's as simple as that!


Reducing rider fatigue by significantly decreasing motor vibrations the EX 250 houses a laterally mounted counter balance shaft, which ensures fun, enjoyable days in the saddle.


We use a forged 6-speed Pankl Racing Systems transmission that features specific cross country gearing in our EX 250, ensuring durability and reliability as well as ensuring riders can tackle high-speed fields and tight, technical woods. Additionally, an innovative shift lever reduces dirt build up guaranteeing easy operation in all conditions.


The EX 250 crankshaft features a 66,4mm stroke and is balanced in conjunction with the counter balancer shaft for minimum motor vibrations. By incorporating a heavier ignition rotor, the crankshaft produces more inertia for a smooth, cross country specific power delivery.


To us they are designed to centralize oscillating masses. All any rider needs to know is that our crankcases help make the EX 250 super-agile and easy to weave in and out of trees! Lightweight and die-cast, as well as being built to house internal shafts in the ideal position, they include a counter balancer shaft to keep the motor smooth. They're also seriously strong!


Ensuring cross country specific power, our EX exhaust systems are designed to deliver the highest possible quality. Comfortably meeting all FIM sound regulations, The EX 250 header pipe is produced with an innovative 3D stamping process to offer optimal geometry, performance and ground clearance, making it less susceptible to damage. The EX 250 muffler also features an advanced internal construction for excellent noise damping and weight saving.


To ensure a super light and consistent clutch action we fit a Damped Diaphragm Steel (DDS) clutch and Brembo hydraulic system to our GASGAS EX 250. Using a single diaphragm spring instead of the more common coil spring, the design also incorporates a damping system, which increases both traction and durability. Additionally, the light and robust basket and inner hub guarantee optimal oil supply and cooling to the clutch. It's almost maintenance free, too!

Features & Benefits




Fast is fun but slowing down is essential, which is why all GASGAS motocross bikes are fitted with high quality calipers and controls. With 260mm front and 220mm rear disks, braking is easy, inspiring riders to push harder and ride faster.
* The illustrated vehicles may vary in selected details from country to country and feature either Braktec or Brembo hydraulic systems.


No need for adjustment and a near maintenance-free operation, but the best thing about a hydraulic clutch is that it delivers a perfectly smooth action time and time again. With lever free-play automatically adjusted, the biting point and function of the clutch remain constant no matter if it's hot or cold.
* The illustrated vehicles may vary in selected details from country to country and feature either Braktec or Brembo hydraulic systems.


Efficient and lightweight radiators give all of our cross country bikes a low center of gravity for best possible handling and are expertly crafted using high strength aluminum. They also keep our bikes cool no matter how hard they're raced, or how challenging the super muddy, slow speed forest trails become. Integrated into the frame eliminates the need for additional hoses while the slim design of the radiators ensures a narrower bike with class-leading ergonomics.


Built to take a beating as well as being super-easy to take in and out when changing tires. The silver, high-strength wheels we fit to our cross country bikes are built around CNC machined hubs, using lightweight spokes and silver anodized aluminum nipples for strong and reliable construction.


Digging into slippery grass tracks, muddy, rutted forest trails and gripping super-slick rocks and stones, Dunlop tires are standard on all GASGAS cross country bikes. Delivering top performance, durability, and the highest levels of grip, a Dunlop MX33 tire is fitted up front with a Dunlop Geomax AT81 at the rear. The optimized tread pattern of both tires is designed to inspire confidence and improve both traction and braking performance across all terrain types.

Features & Benefits




On the EX 250 the EMS features an electronic control unit (ECU) that is responsible for determining ignition timing and the amount of fuel & oil that is injected. Additionally, it receives information from the throttle position sensor, ambient air and intake pressure sensors as well as crankcase pressure and water temperature sensors and makes corrections for automatic temperature and altitude compensation. What that means in layman's terms is that riders don't need to make jetting changes!


Our 2-stroke cross country bike uses 39mm Dellorto throttle body , ensuring precision, smooth action and high-performance. On the EX 250 the 39mm throttle body regulates the amount of air entering the engine via a butterfly valve, which is operated by dual throttle cables connected to the handlebar throttle assembly.


All GASGAS EX models are fitted with an E-starter, guaranteeing the one thing all cross country riders and racers want, super easy electric starting! A Li-Ion 2.0 Ah battery, which weighs approx. 1kg less than a conventional lead battery, ensures bikes conveniently fire into life each and every time while keeping overall weight down. No matter if riding conditions are super cold, or a bike has got super hot, all of our cross country models guarantee reliable starting.

Technical Details


  • Transmission 6-speed
  • Battery capacity 2 Ah
  • Cooling Liquid cooled
  • Starter Electric starter
  • Stroke 72 mm
  • Bore 66.4 mm
  • Clutch DDS multidisc clutch in oil bath, hydraulically activated
  • Displacement 249 cm³
  • EMS Continental EMS
  • Design 1-cylinder, 2-stroke engine
  • Fuel-mixture generation Transfer port injection


  • Weight (without fuel) 101.3 kg
  • Tank capacity (approx.) 8.5 l
  • Wheelbase 1485 mm
  • Front brake disc diameter 260 mm
  • Rear brake disc diameter 220 mm
  • Front brake Disc brake
  • Rear brake Disc brake
  • Chain X-Ring 5/8 x 1/4"
  • Frame design Central double-cradle-type 25CrMo4 steel
  • Front suspension WP XACT-USD, Ø 48 mm
  • Ground clearance 370 mm
  • Handlebar Neken, aluminium Ø 28/22 mm
  • Rear suspension WP XACT Monoshock with linkage
  • Seat height 950 mm
  • Silencer Aluminium
  • Steering head angle 63.9 °
  • Rear subframe design Aluminium
  • Suspension travel (front) 310 mm
  • Suspension travel (rear) 300 mm
  • Wheels Spoked wheels with aluminium rims