The 175 RG Sachs comes from the Lombardy-based manufacturer SWM (Speedy Working Motors), producing from 1971 to 1984 and specialised in enduro and motocross models. This lively, light model has a Sachs 7-speed two-stroke engine without oil mixing, powered and lubricated with 2.5% petrol-oil mix. As regards the structure, it has a closed duplex cradle frame made from steel tubing with front suspension with 35 mm Marzocchi ZTI telescopic hydraulic fork and doublecross rear suspension with Marzocchi preload adjustment. Both brakes are 140 mm drum brakes.