What is the engine displacement of the 1987 Donghai SM 750?

The 1987 Donghai SM 750 has an engine displacement of 745.00 ccm (45.46 cubic inches).

How much horsepower does the 1987 Donghai SM 750 have?

The 1987 Donghai SM 750 produces 26.00 HP (19.0 kW)) @ 4500 RPM of power.

What is the top speed of the 1987 Donghai SM 750?

The 1987 Donghai SM 750 has a top speed of 138.0 km/h (85.7 mph).

1987 Donghai SM 750 Price, Specs, Review

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Review

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The 1987 Donghai SM 750 represents a fascinating chapter in Chinese motorcycle manufacturing, emerging from a period where domestic production was gaining traction and looking to compete with established global brands. As a vintage machine, it stands within a lineage of motorcycles that aimed to provide accessible two-wheeled transport, often drawing inspiration from foreign designs. In its era, direct competitors might have included more utilitarian models from other Asian manufacturers, or even older, less powerful Japanese parallel twins that were still common on the roads, such as certain models from Suzuki or Kawasaki that prioritized durability over outright speed.

At its heart, the Donghai SM 750 featured a 745.00 ccm (45.46 cubic inches) twin, four-stroke engine. This powerplant produced a modest 26.00 HP (19.0 kW) at 4500 RPM, indicating a design focused on reliability and usable torque rather than high-revving excitement. This allowed the motorcycle to achieve a top speed of 138.0 km/h (85.7 mph). Fuel capacity was a generous 25.00 litres (6.61 gallons), suggesting good touring range for its time. These specifications position the SM 750 as a practical, mid-range machine, capable of comfortable cruising and long-distance travel, rather than a performance-oriented sport bike.

Riding characteristics of the Donghai SM 750 would have leaned towards a comfortable, upright stance, typical for a motorcycle of its vintage and category. Its design likely prioritized rider comfort for extended journeys, with a plush seat and a handlebar position that didn't demand an aggressive lean. The twin-cylinder engine, while not exceptionally powerful, would have provided a smooth power delivery, suitable for navigating diverse road conditions without being overly demanding. The vintage category it falls into suggests a riding experience that values the mechanical connection between rider and machine, rather than electronic aids.

The Donghai SM 750 would appeal primarily to vintage motorcycle enthusiasts, collectors, or those with a specific interest in the history of Chinese automotive engineering. Its charm lies not in cutting-edge performance or modern features, but in its historical significance and the unique character of a machine from a developing industrial landscape. It offers a glimpse into a bygone era of motorcycling, providing a distinctive ownership experience for those who appreciate the simpler, more analog nature of classic bikes. As a vintage motorcycle, its value is often in its rarity and the story it tells.

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Pros (Advantages)

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✅ Why buy this bike?

The Donghai SM 750 1987 has a powerful engine that delivers a thrilling and responsive performance on the road.
It features a comfortable riding position and ergonomic design, making long rides more enjoyable and less fatiguing.
The motorcycle has a classic and timeless aesthetic appeal that draws attention and admiration from fellow riders and enthusiasts.
The Donghai SM 750 1987 is known for its durability and reliability, requiring minimal maintenance and delivering consistent performance over the years.
It offers good value for money, providing a high level of performance and features at a competitive price point compared to other motorcycles in its class.

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Cons (Disadvantages)

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⚠️ Things to consider

Limited aftermarket support for parts and accessories due to the age of the motorcycle.
Outdated technology and performance compared to modern motorcycles.
Reliability issues may arise due to the age of the bike.
Difficulty finding qualified mechanics familiar with servicing older models.
Lower resale value compared to newer motorcycles.

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Alternatives

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⚖️ Comparison & Competition

Honda CB750
The Honda CB750 is a classic choice known for its reliability and smooth performance. It offers a comfortable riding experience and a timeless design.
Yamaha XJ750
The Yamaha XJ750 is another popular option with a strong inline-four engine and agile handling. It is known for its durability and versatility on various road conditions.
Suzuki GS750
The Suzuki GS750 is a well-rounded motorcycle with a responsive engine and solid build quality. It provides a good balance of power and comfort for both city commuting and long-distance rides.
Kawasaki KZ750
The Kawasaki KZ750 is a reliable and easy-to-maintain motorcycle with a reputation for solid performance. It is a great choice for riders looking for a dependable and affordable bike.
BMW R80
The BMW R80 is a unique alternative with a boxer twin engine and distinctive styling. It offers a smooth ride, excellent build quality, and a touch of retro charm for riders seeking something different

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License Class (EU)

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The Donghai SM 750 produces 26 HP, fitting A2 license limits (max 35 kW / 47 HP). For riders 18+.

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Fuel Economy & Running Costs

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Estimated average for 745cc class: 35-50 mpg (5.0-7.0 L/100km)

⛽ Tank: 25.00 litres (6.61 gallons)

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Insurance Class

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Insurance grouping for Donghai SM 750 (745cc):

📋 Group 15-20+ — performance class, higher premiums

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Insurance Calculator (UK est.)

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Personalised premium estimate for the Donghai SM 750 (UK rates):

💡 Estimate based on UK market averages. For real quotes, compare on Compare the Market, MoneySuperMarket, GoCompare.

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Price Estimate

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Estimated price range for the Donghai SM 750 based on comparable motorcycles:

AVERAGE

$2,587

📊 Category-based (18 motorcycles) · Approximate (USD)

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Buy New & Used

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Find new and used Donghai SM 750 1987 listings:

🛒 eBay Motors 🏍️ Cycle Trader 🇬🇧 Auto Trader UK 🔍 Google Listings

💡 Third-party listings. MotoBike Info is informational only.

👤 Final premium varies by rider age, history, location.

Donghai SM 750

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