Model Description


MC 125 2022

It’s hard to beat the pure joy of a screaming 125cc 2-stroke! The perfect bike on which to develop lifelong motocross skills, our MC 125 matches a competitive 125cc, 6-speed motor with a super agile and responsive chassis and suspension set-up to deliver fun, fun, fun.
 
BODYWORK
Red with a splash of white. That’s the way we like it! The bodywork fitted to all GASGAS motocross bikes not only reflects our vibrant, Spanish personality but also ensures complete harmony between rider and bike. Considered ergonomics allow unrestricted movement while our flat, high-grip seat profile delivers comfort and control in all conditions.
 
AIRBOX
Less time working on bikes means more time riding bikes, which is exactly why you’ll love the straightforward, no tools needed filter mounting system on all GASGAS motocross bikes. Allowing quick and easy filter changes, the airbox is designed with precisely positioned inlet ducts that ensure maximum airflow and protection of the Twin Air filter. 
 
HANDLEBARS, GRIPS AND THROTTLE ASSEMBLY
Hold on, it’s important! We fit all GASGAS motocross bikes with quality Neken tapered handlebars, guaranteeing comfort and control thanks to optimal pressure points on rider’s hands. The left side ODI grip doesn’t require gluing, while on the right, the vulcanized grip 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
We like to keep our fuel tanks simple and robust, that’s why we opted for a threaded filler cap that provides a tight and reliable seal and positioned the external fuel line to make sure it’s less exposed and susceptible to damage. The black 7-litre lightweight polythene fuel tanks feature direct internal line routing from the pump to the flange, for optimal fuel flow.
 
FRAME
The technology in our frames ensures riders enjoy playful handling and an energetic feeling on any motocross tracks. Underneath the red powder coating there’s a lightweight chromium molybdenum steel, hydro-formed, laser-cut and robot-welded chassis that’s built to perform. Designed to be rigid where it needs to be rigid and to flex where flex is needed, it provides exceptional rider feedback, energy absorption and straight-line stability.
 
SUBFRAME
With a short and compact profile all GASGAS motocross subframes are made from lightweight aluminum. The profile helps centralize mass while also keeping weight down.
 
FORGED TRIPLE CLAMPS
Featuring a 3-way handlebar adjustment that allows riders to set-up the front-end of their bikes just the way they like it, the forged, 22mm offset triple clamps work in harmony with our WP front forks to help deliver precise handling and stability.
 
FRONT SUSPENSION
All GASGAS motocross models are equipped with advanced, super-lightweight 48mm WP XACT upside-down forks that are easily adjustable. Delivering progressive and consistent damping no matter how rough the track, they feature a capsulated air spring and pressurized oil chamber together with other internal damping wizardry. The end result is outstanding rider comfort and front-end confidence.
 
REAR SUSPENSION
Traction is what it’s all about and our fully adjustable WP XACT rear shock provides the advanced damping that inspires confidence and ignites fun. Designed to work harmoniously with both frame and swingarm to offer incredible energy absorption, the shock is also matched to a linkage system with a specific geometry that further aids traction. Rebound and high/low speed compression adjustment and 300mm of travel means GASGAS motocross bikes are ready to take on the roughest tracks.
 
SWINGARM
Light, strong and featuring visible chain adjustment marks to make life at the track easier, our motocross swingarms are made using a gravity die-cast process to guarantee durability and precision.
 
MOTOR
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 power, allowing riders to benefit from free-revving power.
 
CARBURETTOR
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.
 
TRANSMISSION
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!
 
CRANKSHAFT
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.
 
CRANKCASE
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.
 
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 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.
 
DDS CLUTCH
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.

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Model Specification


  • Engine

    Displacement

    124.8 cc

    Engine Management System

  • Performance

    Bore x Stroke

    54 x 54.5 mm

    Clutch

    Wet multi-disc DS clutch, Brembo hydraulics

    Tank Capacity

    Power

    Torque

  • Frame

    Frame

    Central double-cradle type 25CrMo4 steel

    Seat height (unloaded)

    950 mm

    Chain

    Steering head angle

    Ground Clearance (unloaded)

    Weight without fuel

  • Brakes

    Front brake

    Disc brake 260 mm

    Rear brake

    Disc brake 220 mm

    ABS System

    Brake disc diameter front

    Brake disc diameter rear

  • Transmission

    Starter

    Kickstarter

    Transmission

  • Suspension

    Suspension Travel Front

    Suspension Travel Rear

    Front Suspension

    Rear Suspension