Our 250cc motor is designed to be light, compact and amazingly powerful. The lively 250cc electric-start power unit is incredibly user friendly yet massively capable. Designed to boost handling as well as best in class performance, it’s a small but potent 4-stroke package.
It's the magic that happens inside the DOHC cylinder head that guarantees the EC 250F produces efficient, high-level power across the entire rev range. Featuring large titanium valves and finger followers with a tough Diamond Like Coating (DLC) the high-revving cylinder head ensures minimum drag for maximum performance.
CYLINDER AND PISTON
Both professionally engineered from high strength aluminum, the EC 250F cylinder and piston perform an important role in delivering the lively performance that makes the bike so much fun to ride. Guaranteeing outstanding performance and reliability the 78mm bore houses a rigid, forged bridged-box-type piston made by CP.
COUNTER BALANCER SHAFT
In order to counteract the rotational force of the crankshaft and reduce vibration, the EC 250F engine uses a multifunctional counter balancer shaft that also drives the water pump and timing chain.
Gear changes, lots of gear changes, that is part of what makes riding and racing a 250cc 4-stroke fun. The EC 250F comes with a wide-ratio enduro specific, 6-speed forged transmission made by PANKL RACING SYSTEMS that ensures the highest durability and reliability. Additionally, a gear sensor allows the EMS to tailor a specific engine character suited for each gear.
Specifically positioned within the motor, the EC 250F crankshaft helps centralize oscillating masses for super easy handling. A plain big end bearing with force-fitted bearing shells increase service intervals, ensuring durability and the best possible performance. Plain big end bearings with force-fitted bearing shells ensure 135-hour service intervals!
The EC 250F motor is designed to house the motor’s internal shaft arrangements at the ideal center of gravity to improve overall handling. The casings, manufactured using a high-pressure die cast production process, integrate the oil supply to the main bearing and ensure minimal weight while retaining exceptional reliability and strength.
Ensuring enduro specific power across the full GASGAS enduro range, all our exhausts are designed and built to meet FIM sound regulations! The 4-stroke exhaust systems are expertly designed to deliver the very best performance at the lowest possible weight while a joining position allows it to be removed without having to take out the rear shock. Further innovation allows for a short, compact silencer that doesn't increase noise levels. The muffler shell is crafted from lightweight aluminum.
Ensuring riders have precise control over the EC 250F we use a Dampened Diaphragm Steel (DDS) clutch. Using a single diaphragm steel pressure plate instead of traditional coil springs, together with a damping system the clutch delivers better traction and durability. We use a Braktec hydraulic master cylinder to ensure a smooth, progressive lever action.
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.
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.
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.
All GASGAS Enduro bikes come fitted Maxxis Maxx Enduro medium tires as standard, 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 pattern is designed to maximize both traction and braking performance.
ENGINE MANAGEMENT SYSTEM - EMS
The brains of our EC line-up! Working away behind the scenes to ensure the smooth running of the high-performance GASGAS enduro bikes, on our 4-strokes the Keihin EMS system controls everything to do with the electronic fuel injection system as well as featuring a gear sensor, that tailors power delivery for each gear.
We use a 42mm Keihin unit on our 4-strokes enduro bikes. On the EC 250F and EC 350F immediate throttle response is guaranteed due to the throttle cable being mounted directly, without a throttle linkage. The injector is positioned to ensure the most efficient flow into the combustion chamber.
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!