YAMAHA 510-11636-03-00 Nos Piston .50 O/s 2ND

( Engine Type: 2-stroke ), ( Type: Piston ), ( Machine Type: Off-road Motorcycle ), ( Oe/oem Part Number: 510-11636-03 ), ( Items Included: Piston, Piston Rings ), ( Vintage Part: Yes ), ( Country Of Origin: Japan ), ( Performance Part: No ), ( UPC: 510116360300 )

Review YAMAHA Nos Piston .50 O/s 2nd Over 510-11636-03 fits MX400 MX 400 1975

Yamaha 511-11636-03 OEM Replacement Piston for 50 Over-Square 2nd MX400 MX400 75cc Engine (50 O/S 2nd MX400)

The Yamaha 511-11636-03 is an original equipment manufacturer (OEM) replacement piston designed specifically for use in 50cc, 2nd generation MX400 MX400 engines. This piston is compatible with engines that have a 50 over-square design, meaning the bore diameter is larger than the stroke length, which is a common configuration in small-displacement, high-performance motorcycles and other recreational vehicles.

This piston is meticulously crafted to meet the exacting standards of Yamaha's engineering team. It is manufactured from high-strength materials, ensuring durability, reliability, and consistent performance. The piston features a precisely machined crown and skirt to ensure optimal contact with the cylinder and piston ring grooves. This results in efficient combustion, reduced friction, and improved engine efficiency.

The Yamaha 511-11636-03 piston is also designed to provide exceptional heat resistance, making it ideal for high-performance applications. The piston's ring lands are reinforced to prevent ring collapse under high temperatures and pressures, ensuring optimal sealing and preventing engine damage.

Additionally, this piston includes a lightweight, yet strong, aluminum skirt that reduces the overall weight of the rotating assembly, contributing to improved engine response and reduced fuel consumption. The piston also features a ribbed design on the skirt, which enhances rigidity and durability, further improving engine performance and longevity.

Installation of the Yamaha 511-11636-03 piston is straightforward and can be accomplished with standard shop tools. It is recommended that the engine be disassembled, thoroughly cleaned, and inspected for any signs of wear or damage before installation. Properly installing the new piston with the correct gaskets, rings, and other components ensures a successful repair or rebuild project.

In summary, the Yamaha 511-11636-03 OEM replacement piston is a high-quality component designed to restore optimum performance and reliability to MX400 MX400 engines with a 50 over-square design. This piston's durability, heat resistance, and lightweight design make it an excellent choice for high-performance applications, while its precise engineering ensures a perfect fit and function within the engine.

The Yamaha 510-11636-03 piston is a replacement part for the Yamaha MX400 and MX50 ATV models. Here are some pros and cons that might help you decide if purchasing this part is the right choice for you:

1. OEM (Original Equipment Manufacturer) part: This piston is manufactured by Yamaha, ensuring a perfect fit and optimal engine performance.

2. Improved engine performance: Replacing a worn-out piston with a new one can lead to improved engine performance, including increased power and better fuel efficiency.

3. Longer engine life: A new piston can help extend the life of your engine, preventing costly repairs down the line.

4. Peace of mind: By purchasing an OEM part, you can have confidence that the part is of high quality and will function properly.

1. Cost: Replacement parts can be expensive, and this piston is no exception. However, the cost may be worth it for the improved performance and longer engine life.

2. Installation complexity: Installing the piston may require some mechanical knowledge and tools. It may be necessary to remove the engine from the ATV, which can be a time-consuming and labor-intensive process.

3. Availability: Depending on the availability of the part at your local dealership or through Yamaha, there may be a wait time for the part to be shipped.

The Yamaha 510-11636-03 piston is a high-quality OEM replacement part that can lead to improved engine performance and longer engine life. While the cost and installation complexity may be a drawback, the benefits of using a new piston are likely to outweigh the costs in the long run.

If you are experiencing engine performance issues or have a worn-out piston, it may be worth the investment to purchase the Yamaha 510-11636-03 piston. Be sure to have the necessary tools and mechanical knowledge to install the part, or consider having it installed by a professional to ensure proper installation.

Details:

THIS IS A NEW OEM FACTORY .50 O/S PISTON .THIS ITEM IN EXCELLENT CONDITION. ASSEMBLIES WHERE 510-11636-03-00 IS USED: 1975 MX400B - Crank-Piston.

part #: 510116360300 prices

• $35.07-$139.99

specifications pistondon:

• for models: Mx400, Mx, 400
• for makes: Yamaha
• for years: 1975
• engine type: 2-stroke
• type: Piston
• machine type: Off-road Motorcycle
• oe/oem part number: 510-11636-03
• items included: Piston, Piston Rings
• vintage part: Yes
• country of origin: Japan
• performance part: No
• upc: 510116360300

general pistondon:

• condition: New
• Motorcycle Scooter Parts Accessories > Engines Engine Parts > Pistons, Rings Piston Kits

returns pistondon:

• paid by: Seller
• time: 60 Days
• policy: Returns Accepted

offer pistondon:

• availability: In Stock
• quantity: 2
• started: March 2, 2026
• options: Ship-to-home
• sold: 0

payments pistondon:

• other
• wallet: Apple-pay
• credit card: Discover

seller pistondon:

• city: Middleburg, Florida
• rating: 100.0%
• # reviews: 13214

shipping pistondon:

• service: USPS Ground Advantage, FedEx Ground Economy, UPS Ground, USPS Priority Mail
• transit: 4-8 Days
• cost: $11.05
• type: Calculated
• carrier: USPS, FedEx, UPS
• class: Standard, Economy, Expedited

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