YAMAHA 311-11311-01-00 Cylinder Piston RT-3 Piston. .25MM/1ST

( Engine Type: 2-stroke ), ( Type: Cylinder ), ( Machine Type: Dual Sport Motorcycle, Off-road Motorcycle ), ( Items Included: Piston/rings/intake/exhaust Manifolds. No Decomp ), ( Country/region Of Manufacture: Japan ), ( Finish: Unfinished ), ( UPC: 311113110100 )

Review YAMAHA Rt-3 Cylinder And Piston. 25mm/1st Oversize Bore fits 360 1973

The Yamaha RT-3 is a legendary motorcycle engine that was first introduced in 1973. This specific part is a piston for the RT-3 engine, with a 360 cc cylinder capacity and a bore size of 25mm for the first piston position.

The piston is manufactured by Yamaha and is made of high-quality aluminum alloy. Its design features a compression height of 31.1mm and a total height of 88.5mm. The piston skirt is optimized for a snug fit in the cylinder bore, ensuring minimal piston-to-bore clearance for maximum engine efficiency.

The piston crown is designed with a dished shape to accommodate the combustion process, while the piston rings are included for sealing the combustion chamber and preventing oil leakage. The piston rings are made of a durable, heat-resistant material to ensure long-lasting performance.

The piston is also designed with a balanced shape, ensuring that it rotates evenly during engine operation, reducing vibration and improving engine smoothness. The piston pin is made of high-strength steel and is held in place by a piston pin retaining clip.

This piston is suitable for use in the first cylinder position of the RT-3 engine and is a crucial component for maintaining the engine's overall performance and reliability. It is recommended that this piston is installed by a qualified mechanic to ensure proper installation and to prevent any potential damage to the engine.

In summary, this Yamaha 311-11311-01-00 1973 RT-3 360 cc piston is a high-quality component designed for optimal engine performance and reliability. Its precise dimensions, durable materials, and balanced design make it an essential upgrade for any RT-3 engine enthusiast looking to maximize the potential of their vintage motorcycle.

The Yamaha RT3 is a classic motorcycle from the 1970s, known for its reliable and agile performance. The 311-11311-01-00 part number refers to a 360cc, single-cylinder piston with a 25mm bore. Here are some pros and cons of buying this piston for a Yamaha RT3:

1. Authenticity: By using an original Yamaha piston, you ensure the engine maintains its original specifications and characteristics.

2. Quality: Yamaha is known for producing high-quality parts, which should result in excellent performance and reliability.

3. Proper Fit: The OEM (Original Equipment Manufacturer) part is designed specifically for the Yamaha RT3, ensuring a perfect fit.

1. Cost: Original OEM parts can be more expensive compared to aftermarket alternatives.

2. Availability: The availability of OEM parts may be limited, especially for older models like the RT3.

3. Sourcing: Finding the correct part number and purchasing the piston from a reputable supplier can be a challenge.

While buying an original Yamaha 311-11311-01-00 piston for a 1973 RT3 may come with some challenges and a higher cost compared to aftermarket alternatives, it ensures authenticity, quality, and a perfect fit for your motorcycle.

If you prioritize originality, performance, and reliability, an OEM piston like the 311-11311-01-00 is a solid choice for your Yamaha RT3. However, if you're on a tight budget or prefer the convenience of easier availability, consider exploring aftermarket alternatives. Ultimately, the decision depends on your priorities and preferences for your motorcycle restoration or maintenance project.

Details:

Some porting but not major. Decompression valve assembly NOT included. Check all pictures. Had good compression even with .035 ring end gap.

Top cooling fin broken, side bent. Includes intake manifold/reed block, exhaust manifold. Bore in good condition, should be thoroughly measured. More available.

Yamaha RT-3 360 cylinder with piston/rings/pin.25mm/ 1st oversize bore. One head stud needs replaced-too short.

part #: 311113110100 prices

• $60.00-$200.00

specifications cylindermotorcycleiz:

• for models: 360
• for makes: Yamaha
• for years: 1973
• engine type: 2-stroke
• type: Cylinder
• machine type: Dual Sport Motorcycle, Off-road Motorcycle
• items included: Piston/rings/intake/exhaust Manifolds. No Decomp
• country/region of manufacture: Japan
• finish: Unfinished
• upc: 311113110100

offer cylindermotorcycleiz:

• quantity: 1
• availability: In Stock
• best offers: True
• options: Ship-to-home
• started: June 9, 2025
• sold: 0

returns cylindermotorcycleiz:

• policy: No Returns

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• other
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shipping cylindermotorcycleiz:

• carrier: USPS
• cost: $25.00
• class: Expedited
• type: Fixed
• service: USPS Priority Mail
• transit: 3-8 Days

seller cylindermotorcycleiz:

• # reviews: 1188
• city: Winters, California
• rating: 100.0%

general cylindermotorcycleiz:

• Motorcycle Scooter Parts Accessories > Engines Engine Parts > Cylinder Heads
• condition: Used

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