1. Pistons, Rings & Piston Kits Products
  2. sku: 10037064330031853
  3. YAMAHA 509-11637-01

YAMAHA 509-11637-01 Nos Piston 0.75 O/s 510-11637-05

fits model: Yz400, It400. make: Yamaha.

510-11637-05 Yamaha 509-11637-01 Nos Genuine Yz400 It400 Piston 0.75 Mm O/s

( Manufacturer Part Number: 509-11637-01 ), ( Item Thickness: 1 Mm ), ( Vintage Part: Yes ), ( Reference Oe/oem Number: 510-11637-05 ), ( Sub-type: Piston ), ( Model/ Series: Yz ), ( Intended Use: Replacement Part ), ( Country Of Origin: Japan )

Review YAMAHA Nos Genuine Piston 0.75mm O/s fits YZ400 IT400

Yamaha YZ400/IT400 OEM Replacement 0.75mm Overboring Piston Kit - 510-11637-05

Description:

The Yamaha YZ400/IT400 0.75mm Overboring Piston Kit, part number 510-11637-05, is an original equipment manufacturer (OEM) replacement component designed specifically for Yamaha YZ400 and IT400 motorcycles. This piston kit is engineered to deliver optimal performance and reliability, ensuring a seamless upgrade for your engine.

Key Features:

* Precision-engineered piston: Manufactured using high-quality materials and state-of-the-art manufacturing processes, the piston offers exceptional strength, durability, and thermal stability. Its precise fit and finish ensure optimal engine performance and reduced wear and tear.

* Enhanced power and torque: The 0.75mm overboring piston is designed to accommodate larger bore sizes, increasing the engine's displacement and resulting in increased power and torque output. This upgrade is ideal for riders seeking improved performance and acceleration.

* OEM quality and fit: This piston kit is a direct replacement for the original component, ensuring a perfect fit and reliable operation. By using genuine Yamaha parts, you can trust that your motorcycle will maintain its factory-designed performance and longevity.

* Engine protection: The piston's robust design and materials help protect the engine from potential damage caused by wear, high temperatures, or external forces. This component is essential for maintaining engine health and ensuring a long service life.

* Easy installation: This piston kit comes with all necessary hardware for a straightforward installation process. By following the provided instructions carefully, you can confidently complete the upgrade yourself or have it done by a professional technician.

Conclusion:

Upgrade your Yamaha YZ400 or IT400 motorcycle's engine performance with the OEM replacement 0.75mm Overboring Piston Kit, part number 510-11637-05. This high-quality piston offers enhanced power, improved reliability, and the peace of mind that comes with using genuine Yamaha parts. Trust the experts at Yamaha to deliver a top-performing component that will keep your motorcycle running at its best.

The Yamaha YZ400/IT400 0.75 oversized piston Kit (Part numbers: 510-11637-01 for the YZ400 and 510-11637-05 for the IT400) is a popular upgrade for those seeking improved engine performance in their motorcycles. Here are some pros and cons associated with purchasing this piston kit:

Pros:

1. Enhanced Power and Torque: The oversized piston kit increases the displacement of the engine, leading to more power and torque output, making your motorcycle more responsive and faster.

2. Improved Compression: The piston kit offers a higher compression ratio, which can improve the efficiency of the engine, allowing it to burn fuel more effectively and provide better mileage.

3. Durability: Oversized pistons are typically made from stronger materials, making them more durable and capable of handling higher power levels and increased engine stress.

4. Customization: Installing an oversized piston kit is a common modification for off-road motorcycles, allowing riders to tailor their bike's performance to their specific needs and preferences.

5. Enhanced Engine Life: By increasing the engine's power output and efficiency, the piston kit may contribute to a longer engine life as it is better utilized and less stressed.

Cons:

1. Cost: The piston kit is a significant investment, and the cost of purchasing and installing it may be a deterrent for some riders.

2. Complex Installation: Installing the piston kit requires a high level of mechanical skill and expertise, and the process can be time-consuming and potentially costly if done by a professional.

3. Potential Engine Damage: Installing an oversized piston kit can potentially lead to engine damage if not done correctly. Improper installation, such as incorrect clearance or improperly adjusted valves, can result in damage to the piston, cylinder, or other engine components.

4. Additional Maintenance: The piston kit may require more frequent maintenance due to the increased power output and engine stress. This includes more frequent oil changes, valve adjustments, and engine checks.

5. Potential Negative Impact on Emissions: The increased power output from the piston kit may lead to increased emissions. Riders should be aware of local regulations and consider using an aftermarket exhaust system to help mitigate this issue.

Ending Conclusion:

The Yamaha YZ400/IT400 0.75 oversized piston Kit offers several benefits, including increased power and torque, improved compression, and enhanced engine durability. However, it also comes with some drawbacks, such as a significant cost, complex installation, potential engine damage, and additional maintenance requirements. Riders considering this upgrade should carefully weigh the pros and cons and ensure they have the necessary skills and resources to install the kit correctly. For those willing to invest in the time, money, and expertise, the piston kit can result in a more powerful, efficient, and enjoyable riding experience.

Recommendation:

If you're considering purchasing the Yamaha YZ400/IT400 0.75 oversized piston Kit, make sure you have a solid understanding of the installation process and the potential risks involved. Research the kit thoroughly, consult with a professional mechanic or experienced rider, and consider investing in a high-quality aftermarket exhaust system to help mitigate the potential negative impact on emissions. Additionally, be prepared for the additional maintenance requirements and the ongoing costs associated with the kit. Ultimately, if you're looking to significantly enhance your motorcycle's performance and customize it to your preferences, the piston kit may be a worthwhile investment.

Details:

Made in Japan, this piston is a classic part with the manufacturer number 510-11637-05. It is designed for vintage Yamaha motorcycles, specifically the YZ series. This product is a Yamaha genuine piston for the YZ400 and IT400 model's, with an oversize of 0.75mm.

part #: 5091163701 prices

  • $72.59-$93.53

specifications pistondon:

  • for models: Yz400, It400
  • for makes: Yamaha
  • mpn: 509-11637-01
  • item thickness: 1 Mm
  • vintage part: Yes
  • reference oe/oem number: 510-11637-05
  • sub-type: Piston
  • model/ series: Yz
  • intended use: Replacement Part
  • country of origin: Japan

offer pistondon:

  • sold: 0
  • quantity: 1
  • options: Ship-to-home
  • availability: In Stock
  • started: January 18, 2026

general pistondon:

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

seller pistondon:

  • rating: 100.0%
  • # reviews: 1
  • city: Lockport, New York

returns pistondon:

  • policy: No Returns

payments pistondon:

  • credit card: Discover
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  • wallet: Paypal
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shipping pistondon:

  • carrier: USPS
  • class: Standard
  • service: USPS Ground Advantage
  • transit: 6-12 Days
  • cost: $5.52
  • type: Calculated
for models: yz400, it400, for makes: yamaha, item thickness: 1 mm, vintage part: yes, reference oe/oem number: 510-11637-05, sub-type: piston, model/ series: yz, intended use: replacement part, country of origin: japan,
category: motorcycle parts > motorcycle scooter parts accessories > engines engine parts > pistons, rings piston kits, sku: 10037064330031853,

Yamaha 509-11637-01 Is Similar To:

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5 offers $72.59–$93.53 USD
  • Offer #1: $74.99 price + $0.00 shipping estimate = $74.99* total. Fits: Designed for 1975 Yamaha MX250 and 1976-1977 Yamaha YZ250 models Ensures original specifications and performance.FREE SHIPPING
  • Offer #2: $72.59 price + $5.97 shipping estimate = $78.56* total. With the manufacturer part number , you can trust that this piston is a perfect fit for your Yamaha engine. YAM PIST BX 5 This product is a genuine OEM Yamaha piston specifically designed for the 1975 MX250 and 1976-1977 YZ250 models.+$5.97 shipping
  • Offer #3: $93.53 price + $0.00 shipping estimate = $93.53* total. Some photos may be stock New Genuine Yamaha Piston 3 O/S 0.75 (70.75Mm 3Rd O.S.) Item is new in original packaging.FREE SHIPPING
  • Offer #4: $69.95 price + $8.99 shipping estimate = $78.94* total. Location: BM9-11A. Up for Consideration is a NOS Yamaha OEM 3rd O/S.+$8.99 shipping
  • Offer #5: $95.95 price + $5.50 shipping estimate = $101.45* total. The part number is -00, and is shown to be used on the following model(s) and component(s). 1976 YZ250C - Crankshaft-Piston.+$5.50 shipping

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