MOTOR
The DOHC 350cc motor might shares much of its design with the EX 250F motor but looks can be deceiving! Providing a significant increase in power and torque, the compact 4-stroke motor has a 450-rivalling power to weight ratio making it a strong and serious cross country racer. Compact and light, weighting just 27.2 kg the motor helps give our mid-sized cross country bike a lightweight, easy going character.
CYLINDER HEAD AND BALANCER SHAFT
The EX 350F features an advanced DOHC cylinder head layout that is meticulously engineered to deliver performance and reliability. Internally, the DOHC layout features polished camshafts and low-friction DLC coated finger followers, which ensure zero friction and faultless operation. Together with the lightweight valves - 36.3mm intake and 29.1mm exhaust - they deliver awesome performance. In order to counteract the rotational force of the crankshaft and reduce vibration, the EX 350F engine uses a multifunctional counter balancer shaft, which also drives the water pump and timing chain.
CYLINDER AND PISTON
A large diameter, lightweight forged bridged-box-type CP piston sits inside the 88mm bore, 57.5mm stroke cylinder, pumping out the power that makes the EX 350F the seriously capable cross country racer that it is. The piston crown geometry is perfectly matched to the high-compression combustion chamber and as a result, the low oscillating mass delivers exceptional power, high revs and a broad, user friendly power band.
TRANSMISSION
Allowing riders to maximize the full potential of the awesome EX 350F, the bike is fitted with a 6-speed forged transmission from Pankl Racing Systems. Ensuring the highest quality, durability and reliability, a transmission is used, which is specifically suited to cross country riding and racing. Additionally, a gear sensor allows the EMS to tailor a specific engine character suited for each gear
CRANKSHAFT
Rarely seen but always working! The crankshaft fitted inside the EX 350F is key to driving the extremely high-speed moving parts inside the engine, which in turn unleash the unrivalled power achieved by the 350cc engine. Additionally, thanks to an oil feed that brings enhanced engine durability, the EX 350F enjoys long, 135-hour crankshaft service intervals, which save time, effort and cost.
CRANKCASE
The EX 350F engine is designed to be compact while centralizing rotating masses, which means all internal moving shafts and parts are carefully positioned at the ideal center of gravity. As a result, riders can enjoy the best possible handling. Our high-pressure die cast production process guarantees minimal weight while maintaining strength.
EXHAUST SYSTEM
Ensuring cross country specific power, our EX exhaust systems are designed to deliver the highest possible quality. The EX 250F, EX 350F and EX 450F exhaust systems are designed using an innovative 3D hydroforming process to ensure the best performance and lowest weight as well as a 2-part header pipe, which 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.
DS CLUTCH
Fitted with a Diaphragm Steel (DS) clutch ensures riders can quickly and easily keep the revs up on the EX 350F. Featuring a single diaphragm steel pressure plate instead of traditional coil springs the clutch basket is a single-piece CNC machined steel component, which allows the use of thin steel liners. Light and precise the clutch ensures a smooth and constant action no matter how much abuse it receives!
HYDRAULIC BRAKES
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.<br>* The illustrated vehicles may vary in selected details from country to country and feature either Braktec or Brembo hydraulic systems.
HYDRAULIC CLUTCH
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. <br>* The illustrated vehicles may vary in selected details from country to country and feature either Braktec or Brembo hydraulic systems.
RADIATORS
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.
WHEELS
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.
TIRES
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, long 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 traction and braking performance across all terrain types.
ENGINE MANAGEMENT SYSTEM - EMS
As well as controlling the Electronic Fuel Injection (EFI) on all our 4-strokes, the Keihin EMS system also features a gear sensor, tailoring the delivery of power for each gear. Small and light, the Keihin unit is super-fast at processing engine data.
THROTTLE BODY
Our 4-stroke cross country bikes use 44mm Keihin throttle bodies , ensuring precision, smooth action and high-performance. On the EX 350F the injector is positioned to deliver the most efficient flow into the combustion chamber, guaranteeing super sharp throttle response.
ELECTRIC START AND LI-ION BATTERY
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.