CYLINDER HEAD AND BALANCER SHAFT
The MC 250F loves to be revved, which is all possible thanks to the DOHC cylinder head that features large titanium valves and finger followers with a tough Diamond Like Carbon (DLC). The result is minimal friction and optimal performance. The carefully designed combustion chamber produces efficient, high-level power across the entire rev range with the motor also fitted with a multifunctional balancer shaft, which drives the coolant pump and the timing chain.
CYLINDER & PISTON
Performing an important role in delivering the lively performance that makes the MC 250F so much fun to ride, both the cylinder and piston are professionally engineered from high strength aluminum. Guaranteeing outstanding performance and reliability the 78mm bore houses a rigid, forged bridged-box-type piston made by CP.
TRANSMISSION
The right gear, every time. With a low-friction coating on the internal shifting fork, all 5 gear changes on the MC 250F are smooth and purposeful. Light and durable, and featuring motocross specific ratios, the 5-speed transmission itself ensures all power is transferred to the rear wheel, exactly when it’s needed.
CRANKSHAFT
Up and down, round and round... life's tough being a 250F crankshaft. Good job that the spinning heart of the MC 250F motor is designed to offer durability and the best possible performance. Carefully located within the motor it also helps centralize oscillating masses for super easy handling.
CRANKCASE
The protective housing that keeps all internal components safe and secure! Holding all internal parts in the perfect positions to achieve the ideal center of gravity, the high-pressure casting process ensures strength and thin wall thickness for minimal weight.
EXHAUST SYSTEM
Our exhaust systems are key to the power delivery of all GASGAS motocross bikes. Developed to be slim using an innovative 3D process, they comply with FIM sound regulations, look great and most importantly deliver the very best performance.The MC 250F features two-part exhaust systems that are expertly designed to deliver awesome performance at the lowest possible weight. They can also be removed without needing to take out the rear shock! Further innovation allows for a short, compact silencer that keeps sound levels down and looks up.
DS CLUTCH
The MC 250F features a Diaphragm Steel (DS) clutch, which is robust, super reliable and contributes to the compact design of the engine. Featuring a single diaphragm steel pressure plate instead of traditional coil springs, it also has a clutch basket CNC machined from a single piece of steel for incredible durability.