fits model: Mx250, Mx, 250. make: Yamaha. year: 1975.

( Engine Type: 2-stroke ), ( Type: Engine Cylinder Head Piston Top End ), ( Country/region Of Manufacture: Japan ), ( UPC: 509111110000 )
The Yamaha 509-11111-00-00 is a genuine OEM cylinder head top end for the legendary 1975 Yamaha MX250 two-stroke motorcycle. This high-quality component is designed to deliver exceptional performance and reliability, ensuring that your MX250 continues to perform at its best.
The cylinder head is crafted from high-strength alloy, providing superior heat dissipation and durability. The top end includes the piston, which is made from forged aluminum, ensuring optimal compression and power delivery. The piston rings are made from top-tier materials, ensuring a tight seal and minimal power loss.
The cylinder head top end is also equipped with a high-performance intake and exhaust port design. This helps to improve the engine's breathing, leading to increased power and torque. The valves are made from high-quality steel, ensuring long-lasting performance and durability.
The cylinder head top end is finished with a precision honing process, ensuring a smooth and polished surface. This ensures optimal combustion efficiency, leading to improved engine performance. The top end is also finished with a high-quality coating, ensuring protection against corrosion and engine wear.
In conclusion, the Yamaha 509-11111-00-00 is a high-quality OEM cylinder head top end that is designed to deliver exceptional performance and reliability for your 1975 Yamaha MX250. With its high-strength alloy construction, forged aluminum piston, and high-performance intake and exhaust port design, this top end is sure to help your MX250 perform at its best.
Pros of buying Yamaha 509-11111-00-00 1975 MX250 top end:1. Authenticity: This is an original part for a classic motorcycle, which means it will fit perfectly and provide the original performance.
2. Availability: As a more common model, it's easier to find replacement parts for the MX250, which increases the likelihood of finding this specific top end.
3. Quality: Yamaha has a reputation for producing high-quality parts, so you can expect this top end to be durable and reliable.
Cons of buying Yamaha 509-11111-00-00 1975 MX250 top end:1. Age: As a 1975 model, the top end may have some wear and tear, which could impact its performance.
2. Cost: Original parts can be more expensive than aftermarket alternatives, which could deter some buyers.
3. Availability: While the MX250 is a common model, it might be difficult to find the exact top end part if it's not available in stock.
Conclusion:If you're looking for an authentic and reliable top end for your 1975 Yamaha MX250, the Yamaha 509-11111-00-00 is a great option. However, be prepared to pay a premium for the original part, and consider the age of the engine component as well.
Recommendation:If you're looking for a cost-effective solution, consider buying an aftermarket top end that fits your MX250. While it might not be the exact original part, it should still provide reliable performance at a lower cost. If you're a purist and want the original, go for it, but be prepared to invest a little more.
Condition- Used. Ready for shipping and guaranteed as described. No cracks or deep scratches. Good cylinder well.
1975 Yamaha MX250 MX 250 B Engine Cylinder Head Piston Top End 509-11111-00-00. Measures 70.65mm at base of cylinder. Nice OEM cylinder and piston. Good cooling fins and dome.
Minor cosmetic blemishes. Removed from a 1975 Yamaha MX250B. No cracks or damage. Good threads.