1. Pistons, Rings & Piston Kits Products
  2. sku: 9972083625030891
  3. YAMAHA 3R1-11637-00-00

YAMAHA 3R1-11637-00-00 Nos Piston .75 3RD

fits model: Yz80, Yz, Pt. make: Yamaha. year: 1980–1980-82.

3r1-11637-00-00 Yamaha Nos .75 3rd Over Piston Yz80 Yz 80 1980-82 Pt#

( Manufacturer Part Number: 3R1-11637-00-00 ), ( Type: Piston ), ( Country Of Origin: Japan )

Review YAMAHA Nos .75 3rd Over Piston 82 Pt# fits PT YZ80 YZ 1980–1980-82

Yamaha 3R1-11637-00-00 Third Piston for YZ80 & YZ80M Motocross Bikes (1980-1982)

Description:

This authentic Yamaha 3R1-11637-00-00 third piston is designed specifically for the Yamaha YZ80 and YZ80M motocross bikes produced between 1980 and 1982. The piston is engineered using high-quality materials to ensure optimal performance, durability, and reliability.

The third piston is a crucial component of the engine, responsible for transferring power from the crankshaft to the connecting rod. It undergoes significant pressure and heat during operation, making it essential to have a piston that can withstand the rigors of motocross racing.

The Yamaha 3R1-11637-00-00 third piston features a forged aluminum construction, which provides exceptional strength and resistance to wear and tear. The piston also boasts a state-of-the-art ring package, consisting of a compression ring, oil control ring, and a skirt oil scraper ring. These rings ensure efficient combustion, minimize oil consumption, and reduce emissions.

Additionally, the piston's crown shape is specifically designed to optimize the engine's power band and improve overall performance. The piston's skirt is finished with a precision honing process to ensure a perfect fit within the cylinder bore.

In summary, this Yamaha 3R1-11637-00-00 third piston is an essential upgrade for any YZ80 or YZ80M motocross bike from the 1980-1982 era. It is meticulously crafted using high-quality materials and advanced engineering techniques to deliver unmatched performance, durability, and reliability. By installing this piston, riders can enjoy a more powerful, efficient, and responsive machine that will help them take on the toughest motocross tracks with confidence.

Pros and Cons of Buying Yamaha 3R1-11637-00-00 NOS 75cc 3rd Piston for a YZ80 (1980-82)

Introduction:

The Yamaha YZ80 is a classic motocross bike known for its power and agility. The 3R1-11637-00-00 NOS (New Old Stock) 75cc third piston is a replacement part for this model. This article will provide an objective analysis of the pros and cons of purchasing this piston.

Pros:

1. Authenticity: NOS parts are original, meaning they have not been previously used or reconditioned. This guarantees the authenticity and original specifications of the part.

2. Reliability: Since the piston is new, it is less likely to fail or cause engine problems compared to a used or reconditioned part.

3. Performance: A new piston can provide improved engine performance and power due to its perfect sealing and reduced friction.

4. Availability: NOS parts are often available from collectors, enthusiasts, or specialized retailers, making it easier to find replacement parts for older models.

Cons:

1. Cost: NOS parts are generally more expensive than used or reconditioned parts due to their scarcity and authenticity.

2. Limited Availability: Not all NOS parts are readily available for all models and years, making it essential to research thoroughly before purchasing.

3. Incompatibility: In some cases, NOS parts may not be compatible with modifications or upgrades made to the bike.

4. Storage and Handling: NOS parts require proper storage and handling to maintain their original condition, which may not be convenient for all buyers.

Conclusion:

The decision to buy a Yamaha 3R1-11637-00-00 NOS 75cc third piston for a YZ80 (1980-82) depends on several factors, including your budget, availability of the part, and the bike's condition and modifications. If authenticity, reliability, and performance are your primary concerns, and you have the financial means, then purchasing an NOS piston could be a worthwhile investment. However, if cost is a significant factor, or if the part's availability is a concern, then considering a used or reconditioned piston might be a more practical choice. Ultimately, thorough research and careful consideration are essential to make an informed decision.

Recommendation:

If you decide to purchase a Yamaha 3R1-11637-00-00 NOS 75cc third piston for your YZ80 (1980-82), make sure to buy it from a reputable seller to ensure authenticity and quality. Additionally, consider having the piston installed by a professional mechanic to ensure a proper fit and optimal performance.

Details:

FACTORY OEM NOS YAMAHA .75 O/S PISTON YZ80 1980 -1982.

part #: 3r1116370000 prices

  • $27.97-$161.00

specifications pistondon:

  • for models: Yz80, Yz, Pt
  • for makes: Yamaha
  • for years: 1980-1980-82
  • mpn: 3r1-11637-00-00
  • type: Piston
  • country of origin: Japan

returns pistondon:

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

payments pistondon:

  • credit card: Diners-club
  • wallet: Google-pay
  • other

offer pistondon:

  • quantity: 1
  • options: Ship-to-home
  • started: January 15, 2026
  • availability: In Stock
  • sold: 0

general pistondon:

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

seller pistondon:

  • # reviews: 13152
  • city: Middleburg, Florida
  • rating: 100.0%

shipping pistondon:

  • cost: $14.90
  • carrier: USPS, FedEx
  • type: Calculated
  • service: USPS Ground Advantage, FedEx Ground Economy, USPS Priority Mail, FedEx Ground / FedEx Home Delivery
  • class: Standard, Economy, Expedited
  • transit: 7-11 Days
for models: yz80, yz, pt, for makes: yamaha, for years: 1980-1980-82, type: piston, country of origin: japan,
category: motorcycle parts > motorcycle scooter parts accessories > engines engine parts > pistons, rings piston kits, sku: 9972083625030891,

Yamaha 3R1-11637-00-00 Is Similar To:

pistondon logo
2 offers $27.97–$161.00 USD
  • Offer #1: $27.97 price + $16.45 shipping estimate = $44.42* total. 25 YZ125 YZ 125 78-79-80 2K6-11635-00. FACTORY OEM NOS YAMAHA.+$16.45 shipping
  • Offer #2: $161.00 price + $9.05 shipping estimate = $170.05* total. There can be surface rust, loads of shelf dirt, and torn bags YZ80 1980.+$9.05 shipping

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