1. Pistons, Rings & Piston Kits Products
  2. sku: 9767974137479502
  3. OUTLAW RACING PRODUCTS ORP40009

OUTLAW RACING PRODUCTS ORP40009 Piston Kit STANDARD-53.95MM Bike

fits model: Yz125. make: Yamaha. year: 2005–2014.

Orp40009 Outlaw Racing Products Piston Kit Standard-53.95mm Yamaha Yz125 2005-2014 Dirt Bike

( Brand: Outlaw Racing Products ), ( Manufacturer Part Number: ORP40009 ), ( Size: 53.95mm ), ( Type: Piston Kit )

Review OUTLAW RACING PRODUCTS Piston Kit Standard-53.95mm Yamaha Dirt Bike fits YZ125 2005–2014

Introducing the Outlaw Racing ORP4009 Piston Kit, specifically designed for the Yamaha YZ125 motorcycles manufactured between 2005 and 2014. This piston kit is an excellent upgrade for riders seeking enhanced performance and reliability for their off-road bikes.

The ORP4009 kit includes four high-quality pistons, each constructed from forged aluminum alloy. The piston crowns are engineered with a unique shape and profile to optimize combustion efficiency and power output. The piston skirts are designed with a precision honed finish to ensure a perfect fit within the cylinder bore and minimize friction, leading to improved engine response and durability.

The piston kit also features a piston pin made from heat-treated chromoly steel, which provides exceptional strength and resistance to fatigue. The piston rings are made from high-performance materials, including a compression ring, oil control ring, and two piston rings. These rings are designed to seal effectively, reducing blow-by and improving engine efficiency.

The piston kit is compatible with standard 53.95mm cylinders, making it a direct fit for most Yamaha YZ125 models during the specified production period. Installation is straightforward, and the kit includes all necessary hardware for a hassle-free installation process. Upgrading with the ORP4009 piston kit is an investment in the long-term performance and reliability of your Yamaha YZ125 off-road bike.

In summary, the Outlaw Racing ORP4009 Piston Kit is a high-performance upgrade for Yamaha YZ125 motorcycles (2005-2014). It includes four forged aluminum pistons, a chromoly steel piston pin, and high-performance piston rings. The piston kit is designed to improve engine response, power output, and durability, making it an excellent choice for riders looking to enhance their off-road riding experience.

Outlaw Racing P40009 piston kit is designed for Yamaha YZ125 bikes manufactured between 2005 and 2014. This piston kit is an aftermarket upgrade that aims to enhance the performance of the engine. Let's discuss some pros and cons of buying this piston kit.

Pros:

1. Enhanced Power: The P40009 piston kit is designed to provide increased power and torque, making the bike more responsive and faster.

2. High-Quality Materials: The piston kit is made from high-quality materials, including forged pistons and rings, which ensure durability and longevity.

3. Improved Compression: The piston kit offers improved compression ratio, allowing the engine to burn fuel more efficiently and produce more power.

4. Better Throttle Response: The piston kit can improve the bike's throttle response, making it more responsive to rider input and providing better acceleration.

Cons:

1. Cost: The piston kit is more expensive than the stock piston kit, which may be a deterrent for some buyers.

2. Installation: Installing the piston kit can be a complex process and may require specialized tools and knowledge.

3. Risk of Engine Damage: Installing aftermarket parts like the P40009 piston kit carries some risk of engine damage if not installed correctly.

Conclusion:

The Outlaw Racing P40009 piston kit is an excellent upgrade for Yamaha YZ125 bikes manufactured between 2005 and 2014. It offers increased power, improved compression, better throttle response, and is made from high-quality materials. However, it comes with a higher cost, a complex installation process, and some risk of engine damage if not installed correctly.

Recommendation:

If you are a serious racer or enthusiast looking to get the most out of your Yamaha YZ125, the P40009 piston kit is an excellent investment. However, if you are a casual rider or new to the sport, it may be worth considering the stock piston kit or waiting until you have more experience and resources to install and maintain an aftermarket piston kit.

Details:

All packaging must be in original condition. Item Details: Outlaw Racing Piston Kit Standard-53.95mm Yamaha YZ125 2005 2014 DIRT BIKE: images below to:: kits are precision machined Japanese OEM specifications. Outlaw offers direct replacements for the original equipment as well hi-compression and a variety of oversized to meet your rides needs.

Machined smooth heads helps to reflect combustion heat and reduces carbon buildup, protecting the top of piston resulting in increased horsepower fuel economy by up 6%. MENU Store Pages. Using low-expansion, low-friction piston alloy resulting in an extended life span of. Risk of Loss.

Benefits include increased heat transfer, reduced friction, and helps to eliminate cold seizures. Fitment noted as universal fit part may or not without modification. Kit includes piston, rings, and cir clips. Our Teflon coated skirts uses a rolled-on application process which provides bond that is 10 times stronger than other spray on coatings.

specifications pistondon:

  • for models: Yz125
  • for makes: Yamaha
  • for years: 2005-2014
  • brand: Outlaw Racing Products
  • mpn: Orp40009
  • size: 53.95mm
  • type: Piston Kit

payments pistondon:

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seller pistondon:

  • # reviews: 195072
  • city: Hildebran, North Carolina
  • rating: 99.6%

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  • paid by: Seller
  • time: 30 Days
  • policy: Returns Accepted

shipping pistondon:

  • class: Standard, Expedited, One-day
  • carrier: USPS, FedEx
  • transit: 3-7 Days
  • type: Fixed
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offer pistondon:

  • options: Ship-to-home
  • availability: In Stock
  • started: January 5, 2026
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  • quantity: 1

general pistondon:

  • Motorcycle Scooter Parts Accessories > Engines Engine Parts > Pistons, Rings Piston Kits
  • condition: New
for models: yz125, for makes: yamaha, for years: 2005-2014, size: 53.95mm, type: piston kit,
category: motorcycle parts > motorcycle scooter parts accessories > engines engine parts > pistons, rings piston kits, sku: 9767974137479502,

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