Donghai SM 750 - Specifications & Review

SM 750

Article Complete Info

Articleid479205
CategoryClassic
MakeDonghai
ModelSM 750
Year1987

Chassis, Suspension, Brakes & Wheels

FrontbrakesExpanding brake
Fronttyre120/90-17
RearbrakesExpanding brake
Reartyre120/90-17

Engine & Transmission

Borexstroke78.0 x 78.0 mm (3.1 x 3.1 inches)
Compression7.0:1
CoolingsystemAir
Displacement745.00 ccm (45.46 cubic inches)
EnginedetailsTwin, four-stroke
Gearbox4-speed
Power26.00 HP (19.0 kW)) @ 4500 RPM
Topspeed138.0 km/h (85.7 mph)
TransmissiontypefinaldriveChain
Valvespercylinder2

Physical Measures & Capacities

Fuelcapacity25.00 litres (6.61 gallons)
Weightincloilgasetc258.0 kg (568.8 pounds)

About Donghai

Country of Origin: China
Founder: Not publicly documented
Best Known For: Low-cost step-throughs, scooters, and utility two/three-wheelers

Company History

Donghai appears among numerous Chinese manufacturers focused on essential mobility—durable, inexpensive step-throughs and scooters sold domestically and via regional importers abroad. The typical Donghai recipe centers on air-cooled singles, steel frames, and CVT or simple geared transmissions, with emphasis on load-carrying racks and fuel efficiency. In many cities and provincial towns, such machines underpin last-mile delivery and family transport, with dealers stocking consumables and common hard parts to keep downtime minimal. Over time, the brand’s offerings followed broader industry improvements: better wiring looms and connectors, tighter plastics, and EFI adoption in stricter markets. Electric three-wheel cargo variants have also entered the portfolio where regulations favor quiet, low-emission vehicles for dense neighborhoods. Historically, Donghai stands for the democratization of powered transport—the idea that mobility is a utility before it is a luxury. While little marketing lore surrounds the badge, the impact is tangible in kilometers ridden and paychecks earned. For owners, the calculus is practical: a bike that starts each morning, hauls what’s needed, and can be fixed with basic tools. That quiet competence is Donghai’s legacy.

Other Years

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