fits model: Cr125, Cr, 125. make: Honda. year: 1977–1978.

( Manufacturer Part Number: 12200-400-000 ), ( Part Type: Cover Motor Head Cylinder Engine )
The 12200-400-000 1978 CR125 is a vintage Honda motorcycle engine, specifically designed for the CR125 Elsinore model. This is a two-stroke, air-cooled, single-cylinder, 125cc engine that was at the heart of Honda's legendary motocross lineup in the 1970s.
The engine features a 78mm bore and a 58.8mm stroke, resulting in a total displacement of 124.7cc. The crankshaft is supported by two main bearings, and the connecting rod is of forged steel. The cylinder head is a 125cc unit with a single overhead camshaft (SOHC) operating via a chain drive. The camshaft has four valves, two intake and two exhaust, which are actuated by a single rocker arm per valve.
The engine is equipped with a Mikuni VM20 carburetor, which ensures a smooth and responsive power delivery. The ignition system is a CDI (Capacitive Discharge Ignition), which provides reliable and efficient spark for the engine. The engine also features a reed valve intake system, which helps in improving the engine's power and efficiency.
The crankcase is made of aluminum alloy, which not only reduces the engine's weight but also enhances its durability. The engine is air-cooled, with a cooling fin design that effectively dissipates the heat generated by the engine. The engine is also equipped with a kick-start system, making it easy to start in any condition.
The engine is housed in a steel frame, which provides a strong and robust foundation for the machine. The engine cover is made of plastic, which is durable and lightweight. The engine is also equipped with a wet sump lubrication system, which ensures that the engine's moving parts are adequately lubricated.
In summary, the 12200-400-000 1978 CR125 engine is a classic piece of motocross history. Its air-cooled, single-cylinder design, combined with its SOHC, reed valve intake system, and CDI ignition, provides a potent and responsive power delivery. Its robust construction and ease of maintenance make it a favorite among vintage motocross enthusiasts.
Pros of buying a 1978 Honda CR125 Elsinore engine:1. Historical value: The CR125 Elsinore is a classic motocross bike that has a rich history and is highly respected in the motocross community. Owning such a piece of motorcycle history can be a source of pride and enjoyment.
2. Power and performance: The 12200-400-000 engine is known for its power and performance, making it an excellent choice for off-road enthusiasts who enjoy high-speed riding.
3. Reliability: Honda is known for producing reliable engines, and the CR125 Elsinore engine is no exception. With proper maintenance, the engine should be able to provide years of reliable service.
Cons of buying a 1978 Honda CR125 Elsinore engine:1. Age and wear: The engine is over 40 years old, which means it may have worn out components or require extensive repairs to bring it back to its original condition.
2. Availability of parts: Replacement parts for the engine may be difficult to find or expensive, which can make repairs more costly.
3. Compatibility with modern bikes: The engine may not be compatible with modern motocross bikes, which could limit the options for customization or upgrades.
Conclusion:The 1978 Honda CR125 Elsinore engine is a classic and powerful piece of motorcycle history, but it also comes with some drawbacks. If you are an enthusiast who values historical value and enjoys the thrill of high-speed riding, this engine may be a good fit for you. However, if you are looking for a reliable engine for everyday use or are concerned about the cost of repairs, you may want to consider a newer or more modern engine.
Recommendation:Before making a decision, it is important to do your research and thoroughly inspect the engine to assess its condition. You should also consider the cost of repairs and the availability of replacement parts before committing to a purchase. If you are comfortable with the potential costs and are interested in owning a piece of motocross history, the 1978 Honda CR125 Elsinore engine could be a great addition to your collection.
Just because other years model's are suggested listed does not mean it fits them, again contact a dealer to make sure this will fit your bike. All I know is this came off a 1978 Honda CR125, it may fit other years and model's but please do your research before buying.
Everything in the photo is what is included. Being sold as is with no warranty or guarantees.