Gas Gas Halley 125SM
| Make Model | Gas Gas SM 125 |
| Year | 2006-07 |
| Engine | Liquid cooled, two stroke, single cylinder, with reed intake directly |
| Capacity | 124 |
| Bore x Stroke | 54.5 x 54 mm |
| Compression Ratio | |
| Induction | Keihin PWK 26mm |
| Ignition / Starting | Digital CDI Multispark / |
| Clutch | Multidisc hydraulically operated |
| Max Power | 36.8 hp @ 10000 rpm |
| Max Torque | 25 Nm @ 10008 rpm |
| Transmission / Drive | 6 Speed / chain |
| Frame | Deltabox type built using cromoly, rectangular tubes, aluminum swingarm |
| Front Suspension | 41 mm upside-down fork, 255mm wheel travel |
| Rear Suspension | One-piece aluminium swing arm, ?hlins shock absorber with 246 mm wheel travel |
| Front Brakes | Single 260mm disc 4 piston caliper |
| Rear Brakes | Single 220mm disc 1 piston caliper |
| Front Tyre | 120/60 -17 |
| Rear Tyre | 150/60 -17 |
| Dry-Weight | 101 kg |
| Fuel Capacity | 9.5 Litres |
After more than 20 years (1985) since the debut of the first Halley 327, taken to the world trial championships by Gabino Renales, Gas Gas evokes the legendary model, transforming the Halley into a supermotard destined for a younger public: and so the Halley SM 125 is born.
It’s a prototype for about 15 hp, equipped with a 124 cc one-cylinder two stroke engine, liquid cooled, six speed shift and uses a 27mm carburettor.
The Halley SM 125 has a 9.5 litre tank and weighs 100kg. It will be the first model of the range and should be available commercially from May, with a new 450 SM and a 124 four-stroke version completing the package.