1. Pistons, Rings & Piston Kits Products
  2. sku: 3013347441951502
  3. PRO 7074

PRO X 7074 Piston Kit 69.00MM .040

fits model: Yz250, Wr250. make: Yamaha. year: 1994–1997.

7074 Pro X Yamaha 1988-1998 Yz250 1994-1997 Wr250 Prox Piston Kit 69.00mm .040 Oversize

( Brand: Pro X ), ( Manufacturer Part Number: 7074 ), ( Part Type: Piston )

Review PRO X Yamaha 1988 1998 Prox Piston Kit 69.00mm .040 Oversize fits YZ250 WR250 1994–1997

The Yamaha YZ250, WR250, and Pro 7074 piston kit is a high-performance upgrade designed specifically for the Yamaha YZ250 and WR250 motorcycles produced between 1994 and 1997, as well as the Pro 7074 model during the same period. This piston kit is designed to fit 69mm bore engines with a 40mm stroke.

Manufactured to the highest standards, this piston kit is engineered to provide unrivaled power and performance for enthusiasts and racers seeking to maximize the potential of their Yamaha motorcycles. Each piston is machined from high-strength forged aluminum alloy, ensuring optimal strength, durability, and reliability.

The piston crown is designed with a dished shape and a polished surface to reduce friction and optimize combustion efficiency. The piston skirt is precision machined for a snug fit in the engine cylinder, minimizing piston-to-wall clearance and reducing power loss. The piston rings are also included in the kit and are manufactured from high-quality materials to ensure proper sealing.

This piston kit comes complete with a matching piston pin and piston pin retainer to ensure proper fitment and function. The piston pin is heat treated for added strength and durability, while the retainer is designed to provide a secure hold and prevent piston movement during engine operation.

This piston kit is a direct bolt-on replacement, making installation straightforward and hassle-free. Each piston kit includes detailed instructions to guide you through the installation process. However, it's important to note that the installation process may require some additional parts and tools, such as a piston removal tool.

In summary, the Yamaha YZ250, WR250, and Pro 7074 piston kit is a high-performance upgrade for enthusiasts and racers seeking to maximize the potential of their Yamaha motorcycles produced between 1994 and 1997. This piston kit is machined from high-strength forged aluminum alloy, features a dished crown for optimal combustion efficiency, and comes complete with all necessary components for a straightforward installation.

Pros and Cons of Buying a 7074 Yamaha Piston Kit for 1988-1998 YZ250, 1994-1997 WR250 (69,000mm, 040)

Introduction:

The 7074 Yamaha piston kit is compatible with the 1988-1998 YZ250 and 1994-1997 WR250 motorcycles. Replacing the piston is a common improvement to increase power and performance in these models. In this text, we will outline the advantages and disadvantages of purchasing this particular piston kit.

Pros:

1. Enhanced power: The 7074 Yamaha piston kit is designed to increase horsepower and deliver better engine response and overall performance.

2. OEM-quality: This piston kit is manufactured by 7074 Racing, a company that specializes in high-performance engine parts, ensuring a good fit and quality.

3. Improved reliability: A worn-out piston may result in engine damage or decreased performance. A new piston kit, like this one, can prevent potential issues and extend the life of the engine.

4. Suitability for various conditions: Depending on your riding style and conditions, this piston may provide benefits in different riding scenarios, such as high-altitude racing or heavy track use.

5. Gasket included: The piston kit comes with therequired gasket, making the installation process easier and more convenient.

Cons:

1. Cost: The 7074 Yamaha piston kit may be more expensive than stock piston kits or aftermarket options. However,the increased power, reliability, and performance should offset the additional cost.

2. Installation complexity: Installing a new piston kit can be a time-consuming and labor-intensive process. Professional installation is recommended to ensure proper fitment and functioning of the new parts.

3. Potential need for additional components: Depending on the condition of your engine or initial engine setup, you may need to purchase and install other engine components, like a ringset or calibration of the carburetor, to fully take advantage of the new piston.

4. Potential for backfiring: When installing a higher compression piston, you risk the engine backfiring if not prepared properly. One solution is upgrading the jetting on the carburetor or using a high-performance air filter.

Conclusion:

The 7074 Yamaha piston kit offers numerous benefits, including enhanced power, improved reliability, and suitability for various conditions. Although it comes with some potential disadvantages, such as cost and complex installation, the advantages, particularly the increased power and performance, make this piston kit a worthwhile investment for those seeking optimal engine performance. Overall, it is recommended for riders who frequently ride aggressively and desire more power and responsiveness from their 1988-1998 YZ250 or 1994-1997 WR250 motorcycles.

Details:

NEW OEM PROX PISTON ASSEMBLYFITS 1988 1998 YAMAHA YZ250 1994 1997 WR250 model's 7074 69.00 .040 OVERSIZE, CYLINDER WILL NEED TO BE BORED FIT INCLUDES PISTON,RING,PIN CLIPS BRAND IN ORIGINAL PACKAGING ASSEMBLY.

part #: 7074 price

  • $1820.00

specifications pistondon:

  • for models: Yz250, Wr250
  • for makes: Yamaha
  • for years: 1994-1997
  • brand: Pro X
  • mpn: 7074
  • part type: Piston

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general pistondon:

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

offer pistondon:

  • sold: 0
  • quantity: 1
  • options: Ship-to-home
  • started: December 11, 2024
  • availability: In Stock

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  • # reviews: 1377
  • rating: 99.4%
  • city: Bucyrus, Ohio
for models: yz250, wr250, for makes: yamaha, for years: 1994-1997, part type: piston,
category: motorcycle parts > motorcycle scooter parts accessories > engines engine parts > pistons, rings piston kits, sku: 3013347441951502,

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