fits model: Rt180, Rt. make: Yamaha. year: 1990.

( Manufacturer Part Number: 5L9-E1111-00-AC ), ( Part Type: Engine Cylinder Head )
The 5L9-E1111-00-AC Yamaha RT180 engine cylinder head is a crucial component for the smooth operation of your classic motorcycle. This cylinder head, specifically designed for the RT180 model produced in 1990, is a testament to Yamaha's engineering excellence and dedication to delivering high-performance parts.
The 5L9-E1111-00-AC cylinder head is engineered with a precise combustion chamber design to ensure efficient fuel-air mixture ignition. This results in optimal power output, improved engine performance, and enhanced fuel efficiency. The cylinder head features a robust construction, with high-quality material used in its manufacture to withstand the rigors of high-speed operation.
The 5L9-E1111-00-AC cylinder head is also designed with a precise valve seat and valve guide system. This ensures accurate valve timing, reducing engine knock and improving overall engine performance. The cylinder head also features a multi-angle valve design, which allows for improved engine breathing and better combustion, further enhancing engine performance.
The 5L9-E1111-00-AC cylinder head is a direct replacement for the original part on your 1990 Yamaha RT180, ensuring a perfect fit and easy installation. This replacement cylinder head is also designed to meet or exceed the original equipment manufacturer's (OEM) specifications, ensuring that your engine continues to perform at its best.
In conclusion, the 5L9-E1111-00-AC Yamaha RT180 engine cylinder head is a high-quality, reliable, and durable part that will not only enhance the performance of your classic motorcycle but also ensure its long-term reliability. This cylinder head is a must-have for any Yamaha RT180 owner looking to get the most out of their motorcycle.
Pros of buying a 5L9-E1111-00-AC Yamaha RT180 engine cylinder head:1. OEM Part: This is an original equipment manufacturer (OEM) part, meaning it is made by Yamaha, ensuring compatibility and quality.
2. Performance: This cylinder head is designed to enhance engine performance, potentially improving power output and efficiency.
3. Durability: OEM parts are often built to last, reducing the likelihood of premature failure.
4. Warranty: Buying an OEM part may provide a warranty, giving you peace of mind and protection against defects.
Cons of buying a 5L9-E1111-00-AC Yamaha RT180 engine cylinder head:1. Cost: OEM parts are typically more expensive than aftermarket alternatives.
2. Availability: Depending on your location and the availability of the specific part, it may take time to source and receive the cylinder head.
3. Limited customization options: As this is an OEM part, it may not offer the same level of customization as aftermarket alternatives.
Conclusion: If you value originality, quality, and performance, and are willing to pay a premium, then an OEM engine cylinder head like the 5L9-E1111-00-AC Yamaha RT180 could be a good fit for your bike. However, if cost and customization are more important to you, you may want to consider aftermarket alternatives.
Recommendation: Before making a decision, weigh the pros and cons based on your specific needs and budget. Research the market to find the best price and availability for the part, and consider reaching out to a professional mechanic or Yamaha dealership for advice.
No broken fins.
I am parting out a 1990 Yamaha RT180. Item is in excellent condition. This is the cylinder head. Gasket surface is in great shape.
Threads for the spark plug hole is good.