2023 Gas Gas EC 250

Electronics

• ENGINE MANAGEMENT SYSTEM - EMS: All GASGAS EC 2-stroke models feature the most advanced Engine Management System (EMS) of any 2-stroke off-road competition motorcycle, which means riders only need to focus on the trails ahead of them. The brain of the system is the Electronic Control Unit (ECU), which is updated with the latest digital maps to ensure the very best performance and power delivery. Controlling the ignition timing and the amount of fuel injected, using sensor data such as intake air pressure, throttle position and coolant temperature it takes care of everything related to fuel, air and oil. Inconsistent starting and time consuming setting changes are a thing of the past!
• THROTTLE BODY: Things are a little more involved on the 39mm Dellorto throttle body on our 2-stroke bikes, where a Throttle Position Sensor (TPS) relays airflow data to the ECU, which in turn calculates the amount of oil and fuel delivered to the engine! The end result on all bikes is crisp, clean running motors that deliver smooth, strong power.
• ELECTRIC START AND LI-ION BATTERY: The best invention since the wheel! With an electric starter fitted to all of our 4-stroke and 2-stroke enduro bikes we can ensure that all GASGAS enduro models start super easily, no matter the weather. Using a Li-Ion battery, which weighs approx. 1kg less than a conventional lead battery, we can offer the convenience of electric starting while also keeping overall bike weight to a minimum. It's a win, win for everyone!

Handling

• FRAME: All GASGAS enduro frames are built using lightweight, laser-cut chromium molybdenum steel, which is robot welded for complete accuracy and strength! incorporating specifically engineered flex into all 2-stroke and 4-stroke frames we ensure riders have complete confidence no matter how gnarly the terrain. Together with proven geometry, our frames ensure playful handling and the very best stability. We then finish them with durable, red powder coating.
• SUBFRAME: With a short and compact profile all GASGAS enduro subframes are made from lightweight aluminum. The profile helps centralize mass while also keeping weight down.
• FORGED TRIPLE CLAMPS: Our 22mm offset forged triple clamps offer 4-way handlebar adjustment, which ensures riders of all sizes can accurately set the handlebars to best suit their needs. Delivering maximum stiffness, they ensure precise handling and front suspension action.
• WP FORKS: 48 is the magic number when it comes to our enduro bikes. 48mm to be exact, the precise diameter of the WP XPLOR USD forks. They use a split fork design with each side fitted with springs, compression damping is on the left and the rebound on the right. They also provide progressive damping and simple and fast clicker adjustments. And thanks to a calibrated mid-valve piston for consistent damping, the advanced setup keeps the front end higher in the stroke, providing impressive reserves against bottoming out.
• WP SHOCK: Matched to the linkage system fitted to all GASGAS enduro bikes, the WP XACT rear shock delivers 300mm of rear wheel travel to ensure awesome handling, the very best traction and maximum fun in the woods. With specific internal settings giving complete rider 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.
• SWINGARM: The hollow, cast aluminum swingarms fitted to all enduro bikes provide exceptional strength at the lowest possible weight. With clearly visible chain adjuster marks they also ensures chain adjustment is quick and accurate.

Motor

• MOTOR: For decades the 250cc 2-stroke has been the choice of enduro riders and racers across the world, offering the best combination of unsurpassed power and lightweight construction. The 6-speed EC 250 delivers incredible motor performance, simplicity and low maintenance costs thanks to an advanced electronic fuel injection system, an enduro specific transmission and a twin-valve controlled power valve system. As well as reducing fuel usage and emissions our 250cc woods racer consistently delivers a clean, smooth power delivery.
• OIL TANK & PUMP: No need for premix and an average fuel-to-oil ration of 1:80 means one tank of oil is enough for at least five tanks of fuel on the EC 250, which features an electronic oil pump that feeds vital 2-stroke oil into the throttle body and on into the engine to keep it lubricated. Using engine speed and throttle position sensor data, the oil pump is precisely managed by the Engine Management System (EMS), ensuring the perfect amount of oil no matter the conditions. The tank holds 0.7 liters of oil and is fitted with a sensor, which illuminates a warning light when the oil needs to be refilled. Automatic, electronically controlled oil injection reduces exhaust smoke by up to 50 % compared to conventional pre-mix lubrication.
• CYLINDER & PISTON: Delivering smooth and controlled power throughout the RPM range, the EC 250 cylinder features a 66.4mm bore and a Twin-Valve Controlled (TVC) power valve system. 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. Delivering 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 EC 250 cylinder to ensure the highest levels of reliability and performance. It's as simple as that!
• COUNTER BALANCER SHAFT: The EC 250 motor houses a laterally mounted counter balancer shaft, which significantly reduces and minimizes vibration, resulting in smoother and more comfortable rides, especially on longer and more demanding enduro routes.
• TRANSMISSION: We use a forged 6-speed wide-ratio Pankl Racing Systems transmission across our EC enduro range, guaranteeing durability and reliability and ensuring riders can take on both the slowest and fastest types of terrain with confidence. Additionally, an innovative shift lever reduces dirt build up for easy operation in all conditions.
• CRANKSHAFT: Balanced in conjunction with the counter balancer shaft to ensure the smoothest possible running of the EC 250 motor, the crankshaft features a 72mm stroke and produces more inertia than its motocross equivalent. By incorporating a heavier ignition rotor, riders gain increased torque and control of the motor when riding at lower RPM.
• CRANKCASE: The EC 250 motor is designed around mass centralization. As a result, the lightweight, die-cast crankcases have been developed to accommodate the internal shaft arrangements in the ideal position, centralizing oscillating mass and improving handling and overall rideability. Additionally, there is also a compact counter balance shaft to remove unwanted vibrations while the water pump casing is designed for effective cooling by optimizing the flow of coolant.
• EXHAUST SYSTEM: Ensuring enduro specific power across the full GASGAS enduro range, all our exhausts are designed and built to meet FIM sound regulations! Our 2-stroke header pipes are super strong and offer optimal geometry, performance and ground clearance, making them less susceptible to damage. The 2-stroke mufflers also feature an advanced internal construction for excellent noise damping and weight saving.
• DDS CLUTCH: Stop, start. Stop, start. We know what it's like sometimes, which is why the EC 250 has a super light clutch action. We fit a Damped Diaphragm Steel (DDS) clutch and Braktec hydraulic system to our GASGAS EC 250, which creates a clutch that has a light and consistent action and is almost maintenance free. With a single diaphragm spring instead of the more common coil spring, the design also incorporates a damping system, which increases both traction and durability.

Parts

• BRAKTEC BRAKES: Providing superior stopping power while giving riders control and confidence, we fit Braktec braking systems to all of our enduro bikes. With a smooth, sensitive action the front brake features an 11mm piston within the master cylinder and 2x25mm pistons in the caliper, together with a waved 260mm front disc. The rear brake has a 12.7mm master cylinder piston and a 1x25mm piston caliper and uses a 220mm rear brake disc. Keeping weight to a minimum and offering complete confidence Braktec brakes ensure serious stopping power!
• BRAKTEC HYDRAULIC CLUTCH: The Braktec hydraulic clutch system we fit to all GASGAS enduro bikes provides even wear, near maintenance-free operation and perfect action in all conditions. It's also extremely light. Free play is constantly adjusted to ensure a biting point and action that never changes.
• RADIATORS: A cool running motor is a well performing motor, which is why all GASGAS enduro bikes feature an integrated cooling system that ensures maximum cooling efficiency. It also eliminates the need for additional hoses while the slim design of the radiators ensures a narrower bike with class-leading ergonomics. Expertly crafted using high strength aluminum, all radiators also give our enduro bikes a low center of gravity for best possible handling.
• WHEELS: No matter if axle deep in mud, bouncing over rocky trails or being put through their paces over sandy, whooped out straightaways, our silver, alloy wheels are super high-strength. Featuring CNC machined hubs that use lightweight spokes and silver anodized aluminum nipples, GASGAS enduro wheels combine minimal weight with maximum stability.
• TYRES: All GASGAS Enduro bikes come fitted with a Dunlop MX33 tire up front with an AT81 at the rear with both designed to be durable, grippy and deliver the performance that completes our proven performance bikes. Inspiring confidence across a wide range of terrain, the tread patterns are designed to maximize both traction and braking performance.

Style

• BODYWORK: GASGAS Enduro bikes are built to look good and perform to the very highest levels, which is why all of our bodywork ensures complete harmony between rider and bike, providing the perfect ergonomics and contact points for maximum freedom of movement. The updated design and new red plastics reflect our vibrant, Spanish personality while our straightforward graphics proudly say GASGAS! An ergonomically designed flat seat profile, combined with a high grip seat cover, deliver superior comfort and control in all conditions.
• AIRBOX: There is nothing a rider can't love about the straightforward and completely safe no tools needed filter mounting system on all GASAGAS enduro bikes. In the workshop or out at the track, air filter removal and changing takes only minutes. Designed with precisely positioned inlet ducts that ensure maximum airflow and protection of the Twin Air filter, our Airbox allows easy and fast maintenance and maximum air flow.
• NEKEN HANDLEBAR, GRIPS & THROTTLE ASSEMBLY: Ensuring rider comfort and control thanks to optimal pressure points on rider's hands, we fit high-quality Neken tapered handlebars to all of our enduro bikes. With a left side ODI grip that doesn't require gluing, on the throttle side there is a vulcanized grip that 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.
• FUEL TANK: All GASGAS enduro bikes feature 8.5-liter (2.25 gal) fuel tanks ensuring fun forest rides can go on and on. Made from transparent polythene that allows riders to easily see how much fuel is inside the tank, a bayonet style filler cap provides a tight, reliable seal. With a specific routing keeping the external fuel line safe, all bikes are fitted with a fuel level sensor.