The heart of our MC 125 is a compact, 40hp, 17.2kg, 125cc 2-stroke motor. Delivering lots of torque, our power unit makes the bike super easy to use but also highly competitive - perfect for both beginners and top-flight racers. Designed to centralize all internal moving parts, the motor also plays a huge role in the bike's agile handling.
CYLINDER AND PISTON
Hidden away inside our MC 125 cylinder is an innovative power valve system. Responsible for controlling both the main and lateral exhaust ports (we said it was innovative!) when combined with the two-part cylinder head it does its thing to make sure the motor delivers seriously impressive free-revving power.
A 38mm flat slide Mikuni TMX carburetor ensures our little 2-stroke screamer receives a constant supply of fuel, filling the motor with energy and giving riders smooth and controllable power across the full rev range.
Delivering quality, durability and reliability, the 6-speed transmission by PANKL Racing Systems is built tough, and does ensure easy and accurate gear shifting no matter how tough the conditions. The lever features an innovative tip design that prevents dirt build-up when ruts get deep and the dirt get sticky!
The magic at the heart of the motor! Made to be as light as possible and balanced perfectly to reduce unwanted vibrations, the 54.5mm stroke crankshaft is positioned to ensure it has little effect on handling while allowing the 125cc motor to produce it's high-revving fun.
Key to keeping the weight of the MC 125 to a minimum, the motor's thin and strong crankcases are made from a high-pressure die cast process. Allowing motor internals to be positioned closer together, the compact design allows for improved centralization of masses while ensuring the highest levels of rideability. A durable kickstart intermediate gear ensures exceptional starting reliability.
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 125 header pipe offers optimal geometry, performance and ground clearance and is fitted to a muffler that features an advanced internal construction for excellent noise damping.
The MC 125 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, is also has a clutch basket CNC machined from a single piece of steel.
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.
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.
INTEGRATED COOLING SYSTEM AND RADIATORS
Keeping our bikes slim means better handling, which is why the GASGAS motocross range features cooling systems that are integrated into the frames. Also allowing for improved cooling due to eliminating the need for additional hoses, together with the high-strength, lightweight radiators the complete system ensures, well, our bike stay super cool no matter how tough the conditions!
Built to take a beating, our wheels are ready to play rough. No matter how heavy the landing or how rough the track, the silver, high-strength rims, CNC machined hubs and lightweight spokes deliver maximum strength for complete peace of mind.
Connecting rider and bike to the track the Maxxis MaxxCross MX-ST tires are designed to be durable, grippy, and deliver the performance that completes our proven performance bikes. Inspiring confidence and boosting predictability, the tread pattern is designed to maximize traction and braking performance.