WISECO MN-S813 Piston Kit Engine Au MN/S813

( Brand: Wiseco ), ( Manufacturer Part Number: MN/S813 ), ( Type: Piston Kits ), ( Compatible Year: 2002 2001 ), ( Bundle Description: 1 Pc Genuine Wiseco Piston Kits ), ( Core Charge: Free No Core Charge ), ( Fitment Type: Direct Replacement )

Review WISECO Mn/s813 Piston Kit For Yamaha Engine Pistons Kits Au fits WR426F 2001–2002

Introducing the WiseCo MN/S813 Piston Kit, specifically designed for the 2001-2002 Yamaha WR426F engine. This piston kit is an excellent upgrade for motocross and off-road riders seeking improved performance and durability for their engines.

The MN/S813 pistons are made from a forged 2618-T6 aluminum alloy, ensuring superior strength and consistency in comparison to their cast counterparts. Forged pistons offer better resistance to engine heat and fatigue, extending the lifespan of the piston and reducing the likelihood of piston failure.

These pistons feature a compression height of 11.2 mm and a total height of 56.5 mm, making them suitable for engines that require enhanced power output. WiseCo's pistons also have a narrow piston skirt design, which reduces friction and improves piston ring sealing, leading to better engine efficiency and improved power delivery.

The piston's crown shape has been optimized for a better gas flow, enabling the engine to breathe more efficiently and generate more power. Additionally, the piston's second ring groove helps to reduce the amount of blowby gases, preventing them from entering the crankcase and improving engine oil cleanliness.

Each piston comes with a matching WiseCo connecting rod, ensuring perfect fitment and optimal balance between the piston and the crankshaft. The connecting rods are made of 4340 steel, ensuring they are strong and durable, capable of handling the increased power output of the upgraded pistons.

The WiseCo MN/S813 Piston Kit is an excellent choice for riders who demand high-performance and reliability from their engines. With its forged aluminum pistons, optimized crown shape, and durable connecting rods, this kit is the perfect upgrade for any 2001-2002 Yamaha WR426F engine.

The Wiseco MN/S813 piston kit for the 2001-2002 Yamaha WR426F engine is a popular aftermarket option for those looking to enhance the performance of their motorcycle. Here are some pros and cons to consider before making a purchase:

1. High-performance design: Wiseco pistons are known for their high-performance design, which can help increase power and torque in the engine. The MN/S813 piston kit is specifically designed for the WR426F engine and is intended to provide better ring seal, reduced friction, and improved durability.

2. Lightweight: The pistons in this kit are lighter than OEM pistons, which can help reduce rotating mass and improve engine response.

3. Customizable: Wiseco offers various piston dome shapes, sizes, and materials to suit different riding styles and engine modifications.

4. High-quality materials: The pistons are made from forged aluminum alloy, which is stronger and more durable than cast pistons.

1. Cost: Aftermarket piston kits like the Wiseco MN/S813 can be more expensive than OEM pistons.

2. Installation: Installing aftermarket pistons can be a complex process and may require specialized tools and knowledge. It's recommended to have the pistons installed by a professional mechanic.

3. Potential engine modifications: Installing aftermarket pistons may require additional modifications to the engine to ensure proper fit and function.

In conclusion, the Wiseco MN/S813 piston kit for the 2001-2002 Yamaha WR426F engine offers several benefits, including improved performance, lightweight design, and high-quality materials. However, it comes with some drawbacks, such as higher cost, installation complexity, and potential engine modifications.

If you are looking to enhance the performance of your WR426F motorcycle and are willing to invest in a high-quality aftermarket piston kit, the Wiseco MN/S813 is a solid choice. However, it's essential to consider the cost, installation complexity, and potential engine modifications before making a purchase. Ultimately, the decision to buy this piston kit depends on your riding style, budget, and goals for your motorcycle.

Details:

Wiseco Piston Kit for 2001 - 2002 Yamaha WR426F - Engine Pistons Kits au: Status: In Stock.

part #: mns813 price

• $230.62

specifications pistondon:

• for models: Wr426f
• for makes: Yamaha
• for years: 2001-2002
• brand: Wiseco
• mpn: Mn/s813
• type: Piston Kits
• compatible year: 2002 2001
• bundle description: 1 Pc Genuine Wiseco Piston Kits
• core charge: Free No Core Charge
• fitment type: Direct Replacement

shipping pistondon:

• service: Standard
• class: Standard
• cost: $0.00
• transit: 3-5 Days
• type: Fixed

seller pistondon:

• # reviews: 16806
• city: Multiple warehouses
• rating: 98.7%

offer pistondon:

• quantity: 1
• sold: 0
• options: Ship-to-home
• started: January 30, 2026
• availability: In Stock

payments pistondon:

• other
• credit card: Visa
• wallet: Apple-pay

general pistondon:

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

returns pistondon:

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

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