The sound of a 125cc 2-stroke ripping around a motocross track is one of life's simple pleasures! Step forward the awesome GasGas MC 125 at Lings GasGas. This little ripper is fully equipped with everything you'll need to find the fastest way around any circuit, making it the real deal and sitting proudly at the top of the small-bore pre-mix class!
At its core is a powerful 124.8 cm³, 1-cylinder, 2-stroke engine, weighing just 17.86 kg. This engine is designed to churn out relentless torque and impressive horsepower figures, retaining its typical high-revving character while providing grunt where it matters most. A major technological leap for the 2-stroke SX range is the Electronic Fuel Injection (EFI). This Keihin EFI system, combined with a reed valve case design and electronic power valve, ensures smooth, more usable power throughout the rev range, eliminating fiddly jetting setups. An electric starter, powered by a robust 12.8V 2 Ah lithium-ion battery, means instant restarts even in the heat of a race. Riders can also choose between two engine maps via a map select switch: Map 1 (White Map) offers a linear, predictable power delivery ideal for hard-packed dirt, while Map 2 (Green Map) is tuned for loose, thick, sandy conditions with a richer mix.
The chassis receives multiple technical upgrades for 2025. The central double-cradle-type 25CrMo4 steel frame features a reworked rear shock mount area and updated engine mounts with cut-outs, resulting in improved chassis flex, better cornering behavior, and a 300g weight saving. The frame is also optimized for better anti-squat behavior. The all-aluminium subframe is light, strong, and works as one with the new frame, helping to centralize mass. Forged aluminum triple clamps offer precise flex and align the fork tubes perfectly for smooth action and predictable handling.
Plush WP XACT suspension ensures consistent damping and exceptional comfort. The 48mm, split-air WP XACT forks and WP XACT rear shock with linkage have been re-tuned for 2025, offering improved response and easy, tool-free adjustability for both high and low-speed compression, as well as rebound. Braktec calipers with GasGas specific brake disks (260mm front, 220mm rear) ensure amazing braking performance. Lightweight and robust black anodized D.I.D rims are fitted with new Dunlop GEOMAX MX34 Motocross tyres for exceptional traction. The unmistakable, all-red bodywork for a classic GasGas look, with new black-emblazoned graphics applied using IML technology, stays super fresh for a long time. NEKEN handlebars with lock-on ODI grips ensure a comfortable setup. A stronger one-piece air intake guarantees maximum airflow, and a beefier rubber tank support holds the fuel tank firmly in place while protecting the frame.
Category |
Specification |
Engine |
1-cylinder, 2-stroke, liquid-cooled |
Displacement |
124.7 cm³ |
Power |
(N/A) |
Torque |
(N/A) |
Fuel System |
Mikuni VM 32 carburettor |
Transmission |
6-speed |
Final Drive |
Chain (520, non-sealed) |
Suspension (Front) |
WP XACT 43 Upside-Down fork, Ø 43 mm, 278 mm travel |
Suspension (Rear) |
WP XACT PDS mono shock, 289 mm travel |
Brakes (Front) |
260 mm disc brake |
Brakes (Rear) |
220 mm disc brake |
Wheels |
1.60 x 21"; 2.15 x 18" |
Tyres |
80/100-21 (Front); 100/90-18 (Rear) |
Seat Height |
900 mm |
Wheelbase |
1,390 mm |
Rake / Trail |
63.5° / (N/A) |
Tank Capacity / Range |
6.3 L / (N/A) |
Weight (Wet) |
81.5 kg (without fuel) |
Display |
(N/A) |
Service Interval |
General maintenance 10-15h of riding |