CR500 Engine for Sale: Everything You Need to Know
cr500 engine for sale, The CR500 engine, known for its legendary power and performance, remains one of the most iconic two-stroke engines in motocross history. Despite being discontinued, enthusiasts continue to seek out these engines for their raw power, reliability, and versatility in modern projects. If you’re considering purchasing a CR500 engine, this article will guide you through its specifications, uses, and frequently asked questions.
Specifications of the CR500 Engine
| Feature | Details |
|---|---|
| Engine Type | Single-cylinder, two-stroke |
| Displacement | 491cc |
| Bore x Stroke | 89mm x 79mm |
| Compression Ratio | 7.0:1 |
| Horsepower | Approximately 55-65 HP (varies by year and tuning) |
| Cooling System | Liquid-cooled |
| Ignition | CDI (Capacitor Discharge Ignition) |
| Carburetor | Keihin 38mm (varies by year) |
| Fuel Type | Premixed gasoline (typically 32:1 ratio) |
| Weight | ~76 lbs (engine only) |
| Applications | Motocross, hill climbing, flat track racing, custom builds |
Why is the CR500 Engine So Popular?
- Unmatched Power: The CR500 engine delivers immense torque and high-end power, making it a favorite among riders who crave adrenaline.
- Durability: Built with robust components, the CR500 engine is known for its reliability in harsh conditions.
- Custom Projects: Many enthusiasts retrofit the CR500 engine into modern dirt bikes, quads, or custom projects for a unique blend of vintage power and contemporary handling.
- Easy Maintenance: Two-stroke engines like the CR500 are simpler to maintain and rebuild compared to four-stroke alternatives.
Where to Find a CR500 Engine for Sale
Finding a CR500 engine can be a challenge due to its discontinued production, but it’s not impossible. Here are some popular sources:
- Online Marketplaces: Websites like eBay, Craigslist, and Facebook Marketplace often have listings for CR500 engines or complete bikes.
- Motocross Forums: Enthusiast communities like ThumperTalk or CR500 Riders often feature classified sections.
- Specialized Dealers: Some dealers and shops specialize in vintage motocross parts and may stock CR500 engines.
- Engine Builders: Companies or individuals who specialize in rebuilding and selling CR500 engines may offer fully restored units or customized versions.
Things to Consider Before Buying a CR500 Engine
- Condition: Ensure the engine is in good condition or can be rebuilt. Look for cracks, rust, or excessive wear.
- Year Model: Different years may have slight variations in components or performance.
- Compatibility: Confirm that the engine will fit your intended bike or project.
- Cost: CR500 engines can be expensive due to their rarity, with prices ranging from $1,500 to $5,000 depending on condition and modifications.
- Availability of Parts: While parts are generally available, some specific components may be harder to find.
Frequently Asked Questions (FAQs)
1. Can I still find parts for a CR500 engine?
Yes, many aftermarket manufacturers produce parts for the CR500 engine, and used parts are available through forums, classifieds, and vintage motocross shops.
2. What bikes can I swap a CR500 engine into?
The CR500 engine is commonly swapped into modern dirt bike frames like the Honda CRF450R or other lightweight motocross frames. Custom builds may require fabrication for proper fitment.
3. How much does a CR500 engine cost?
Prices vary based on condition and modifications. Expect to pay between $1,500 and $5,000 for a complete engine.
4. Why was the CR500 discontinued?
The CR500 was discontinued due to stricter emissions regulations and the shift toward four-stroke engines in competitive motocross.
5. Is a CR500 engine suitable for beginners?
No, the CR500 engine is best suited for experienced riders due to its high power output and aggressive performance characteristics.
6. What fuel mix should I use for a CR500 engine?
A common fuel mix ratio is 32:1, using high-quality two-stroke oil and premium gasoline. Always consult the owner’s manual for specific recommendations.
7. How often does the CR500 engine need maintenance?
Regular maintenance includes cleaning the air filter, checking the spark plug, and inspecting the piston and rings after every 20-30 hours of use.
8. Can I use a CR500 engine for racing?
Yes, the CR500 engine is still competitive in certain racing formats like hill climbs, flat track, and vintage motocross events.
9. Are there any modern alternatives to the CR500 engine?
Modern four-stroke engines like the Honda CRF450R or KTM 500 EXC offer powerful performance, but they lack the raw power and simplicity of the two-stroke CR500.
10. What makes the CR500 engine unique compared to other two-stroke engines?
The CR500’s large displacement, high torque, and iconic reputation make it a standout in the world of two-stroke engines.
Conclusion
The CR500 engine remains a sought-after piece of motocross history. Whether you’re restoring a vintage bike, building a custom project, or simply looking for raw power, the CR500 engine is an excellent choice. However, it’s essential to research thoroughly and ensure compatibility with your intended use.
If you’re in the market for a CR500 engine, patience and diligence are key. With its legendary performance and iconic status, owning one is a rewarding experience for any motocross enthusiast.

