YAMAHA 1LX-11111-00 Cylinder Head

( Manufacturer Part Number: 1LX-11111-00 ), ( Part Type: Cylinder Head ), ( Country Of Origin: United States ), ( Manufacturer Warranty: Unspecified Length ), ( Storage Location: J8 Crp1-n Buk 5 )

Review YAMAHA Cylinder Head fits YZ125 1986–1987

Introducing the Yamaha YZ125 cylinder head from the 1986-1987 model years, a legendary component of the iconic YZ125 motorcycle. This cylinder head, model number 1LX-11111-00, is a testament to Yamaha's unwavering commitment to high-performance engineering and innovative design.

The YZ125 cylinder head showcases a sophisticated design with a compact combustion chamber. The combustion chamber's shape and size were meticulously engineered to optimize the air-fuel mixture's compression and ignition, resulting in enhanced power output and improved engine efficiency. The cylinder head also features a large intake valve and a smaller exhaust valve, which allows for optimal gas flow in and out of the cylinder.

The cylinder head is made of high-quality aluminum alloy, ensuring both durability and lightweight construction. The cooling fins on the exterior of the cylinder head provide effective heat dissipation, maintaining optimal engine temperature during rigorous use. The cylinder head also includes a reliable and robust valve train system, consisting of sturdy valves, springs, and retainers, ensuring excellent valve control and reliability.

Additionally, this Yamaha cylinder head comes with pre-installed spark plug and exhaust valve seat, making for a seamless installation process. The cylinder head is compatible with the Yamaha YZ125 motorcycles from 1986 to 1987, providing a perfect fit and performance enhancement for these classic bikes.

In summary, the Yamaha YZ125 cylinder head, model number 1LX-11111-00, is an essential upgrade for any vintage YZ125 enthusiast. Its compact yet sophisticated design, durability, and high-performance features make it a must-have component for those seeking to boost the power and efficiency of their cherished motorcycle.

Buying a Yamaha YZ125 cylinder head from the 1986-1987 model years (specifically the Yamaha 1LX-11111-00 part number) comes with both advantages and disadvantages for motorcycle enthusiasts and mechanics. Here's a breakdown of the key points:

1. Replacement: If you own a 1986-1987 Yamaha YZ125 and its original cylinder head is worn out or damaged, buying a new or used replacement head can help restore your motorcycle's performance and reliability.

2. Performance: The Yamaha YZ125 is known for its excellent power-to-weight ratio and handling capabilities. Installing a new or rebuilt cylinder head can help improve engine performance, potentially leading to better acceleration and top speed.

3. Cost-effective: In some cases, buying a used cylinder head from a salvage yard or online marketplace can be more cost-effective than purchasing a new one from an authorized dealer.

1. Quality concerns: When purchasing a used cylinder head, there is a risk of receiving a head with hidden damage or wear that may not be apparent until after installation.

2. Compatibility: Ensure that the cylinder head you're considering is compatible with your specific motorcycle model and year. A mismatch could lead to poor performance, damage to other components, or even safety concerns.

3. Installation: Installing a cylinder head can be a complex and time-consuming process, requiring specialized tools and knowledge. If you're not confident in your abilities, it may be best to hire a professional mechanic.

The decision to buy a Yamaha 1LX-11111-00 cylinder head for a 1986-1987 YZ125 depends on your specific needs, budget, and expertise. If you're looking for improved performance, a used or rebuilt head could be a cost-effective solution. However, it's essential to ensure the head is in good condition and compatible with your motorcycle. If you're unsure about the installation process, consider seeking professional help.

If you're confident in your mechanical abilities and have access to a good source for a tested and guaranteed compatible used cylinder head, purchasing one could be a cost-effective solution for restoring performance in your 1986-1987 Yamaha YZ125. Alternatively, consider purchasing a new cylinder head from a reputable dealer for the peace of mind that comes with a warranty and guaranteed quality.

Details:

Spotlight: A Day Inside . This is a critical component for engine rebuilds or repairs. Fits: 1986 Yamaha YZ125. The image to watch on YouTube.

Yamaha Cruisers. Genuine Yamaha cylinder head for 1986 1987 YZ125 model's, ensuring proper engine compression and performance.

part #: 1lx1111100 prices

• $231.32-$315.88

specifications cylindermotorcycleiz:

• for models: Yz125
• for makes: Yamaha
• for years: 1986-1987
• mpn: 1lx-11111-00
• part type: Cylinder Head
• country of origin: United States
• manufacturer warranty: Unspecified Length
• storage location: J8 Crp1-n Buk 5

shipping cylindermotorcycleiz:

• service: FedEx Ground / FedEx Home Delivery, USPS Priority Mail, FedEx 2Day, Overnight
• type: Fixed
• cost: $0.00
• transit: 4-8 Days
• class: Standard, Expedited, One-day
• carrier: FedEx, USPS

general cylindermotorcycleiz:

• condition: New other see details
• Motorcycle Scooter Parts Accessories > Engines Engine Parts > Cylinder Heads

seller cylindermotorcycleiz:

• city: Odessa, Florida
• # reviews: 206275
• rating: 99.3%

payments cylindermotorcycleiz:

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• credit card: Discover
• wallet: Paypal

offer cylindermotorcycleiz:

• sold: 0
• quantity: 1
• options: Ship-to-home
• best offers: True
• availability: In Stock
• started: January 21, 2026

returns cylindermotorcycleiz:

• time: 30 Days
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