PRO-X MN-740P Piston Kit Engine Lw MN/740P

( Brand: Pro-x ), ( Manufacturer Part Number: MN/740P ), ( Type: Piston Kits ), ( Compatible Year: 2009 2008 2007 2006 2005 2004 2003 ), ( Bundle Description: 1 Pc Genuine Pro-x Piston Kits ), ( Core Charge: Free No Core Charge ), ( Fitment Type: Direct Replacement )

Review PRO X Mn/740p Piston Kit For Yamaha Engine Pistons Kits Lw fits YZ450F 2003–2009

Introducing the PRO-X MN/740P Piston Kit by CP CARRILLO, specifically designed for the 2003-2009 Yamaha YZ450F engine. This piston kit is an upgrade from the original equipment manufacturer (OEM) piston, offering enhanced performance and durability for off-road racing and high-performance riding.

The PRO-X MN/740P piston kit consists of a forged piston with a unique, high-strength, low-friction design. The piston crown features a center-fire, twin-ring design, which provides increased compression and improved sealing. The piston skirt is engineered with a full-skirt design to increase strength and durability, while the piston pin bore is precision-machined for a perfect fit and smooth operation.

The piston ring set included in this kit is also an upgrade from the OEM rings. The top ring is a low-tension, nitrided ring with a chrome molybdenum alloy, which provides improved sealing and longer ring life. The second ring is a low-tension, nitrided ring with a molybdenum-coated groove, which reduces friction and increases engine efficiency. The oil control ring is a nitrided ring with a chrome molybdenum alloy, which provides improved oil control and reduces blowby.

The PRO-X MN/740P piston kit also includes a high-performance wrist pin and piston pin retainer. The wrist pin is made of high-strength, chrome molybdenum alloy, and the piston pin retainer is made of billet aluminum for added strength and durability.

This piston kit is suitable for high-performance riding and off-road racing applications, and is designed to provide increased power, improved durability, and longer engine life compared to the OEM piston. The PRO-X MN/740P piston kit is manufactured in the USA and is backed by CP CARRILLO's industry-leading warranty.

In summary, the PRO-X MN/740P piston kit by CP CARRILLO is a high-performance upgrade for the Yamaha YZ450F engine. It features a forged piston with a twin-ring design, a high-strength wrist pin, and a nitrided piston ring set for improved sealing, reduced friction, and increased engine efficiency. This kit is suitable for high-performance riding and off-road racing applications and is backed by CP CARRILLO's industry-leading warranty.

Buying a Pro-X MN/740P piston kit for a 2003-2009 Yamaha YZ450F engine involves considering its potential advantages and disadvantages to determine if it's a worthwhile investment.

1. Enhanced Performance: The Pro-X piston kit is designed to provide improved performance by increasing compression ratio and power output.

2. High-Quality Material: The piston is made of forged aluminum alloy, ensuring durability and strength.

3. Precision Machining: The piston undergoes precise machining, which results in a perfect fit and reduced engine wear.

4. Increased Longevity: The Pro-X piston kit is designed to last longer than OEM pistons, reducing the frequency of replacements.

5. Improved Thermal Efficiency: The piston's design promotes better heat transfer, which can help prevent detonation and improve engine efficiency.

1. Cost: The Pro-X piston kit is more expensive than OEM pistons, which may be a deterrent for some riders.

2. Installation Complexity: Installing the Pro-X piston kit requires more expertise than installing OEM pistons, which may necessitate the assistance of a professional.

3. Potential Power Increase: The increased power output of the Pro-X piston kit may require modifications to other engine components to prevent damage or to achieve optimal performance.

4. Increased Engine Noise: The Pro-X piston kit may result in increased engine noise, which some riders may find unappealing.

The Pro-X MN/740P piston kit offers several advantages, including improved performance, durability, and thermal efficiency. However, it comes with a higher cost, installation complexity, and potential power increase that may be considered disadvantages. Ultimately, the decision to purchase this piston kit depends on your riding style, budget, and level of expertise. If you're looking for increased power and durability and are willing to invest in a high-quality aftermarket piston, the Pro-X MN/740P piston kit may be a worthwhile investment. On the other hand, if you're on a tight budget or prefer a more straightforward installation, an OEM piston may be a better choice.

Details:

Pro-X Piston Kit for 2003 - 2009 Yamaha YZ450F - Engine Pistons Kits lw: Status: In Stock.

part #: mn740p price

• $197.05

specifications pistondon:

• for models: Yz450f
• for makes: Yamaha
• for years: 2003-2009
• brand: Pro-x
• mpn: Mn/740p
• type: Piston Kits
• compatible year: 2009 2008 2007 2006 2005 2004 2003
• bundle description: 1 Pc Genuine Pro-x Piston Kits
• core charge: Free No Core Charge
• fitment type: Direct Replacement

offer pistondon:

• started: November 18, 2025
• options: Ship-to-home
• quantity: 1
• sold: 0
• availability: In Stock

seller pistondon:

• rating: 98.1%
• city: Multiple warehouses
• # reviews: 13672

general pistondon:

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

shipping pistondon:

• cost: $0.00
• transit: 3-6 Days
• type: Fixed
• service: Standard
• class: Standard

payments pistondon:

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

returns pistondon:

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

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