WISECO MN-21YC Piston Kit Engine Dz Ski Doo MN/21YC 670

( Brand: Wiseco ), ( Manufacturer Part Number: MN/21YC ), ( Compatible Year: 1997 1996 1995 ), ( Compatible Model: Summit 670 ), ( Bundle Description: 1 Pc Genuine Wiseco Piston Kits ), ( Type: Piston Kits ), ( Core Charge: Free No Core Charge ), ( Fitment Type: Direct Replacement )

Review WISECO Mn/21yc Piston Kit Ski doo 670 Engine Pistons Dz fits SUMMIT 1995–1997

Introducing the WISCO MN/21YC piston kit, specifically designed for the 1995-1997 Ski-Doo Summit 670 engine. This piston kit is an essential upgrade for those seeking improved performance and reliability for their snowmobile.

The MN/21YC piston kit includes two high-quality pistons, each crafted from forged aluminum alloy and precision-machined to ensure a perfect fit. The pistons are designed with a dish shape and a compression height of 21mm, providing optimal combustion efficiency and power output.

The piston tops feature a fully floating wrist pin design, which allows for greater piston-to-liner contact area and reduces friction between the piston and cylinder wall. This results in reduced engine wear, improved durability, and enhanced power transfer to the tracks.

The piston kit also includes new piston rings, which are essential for sealing the combustion chamber and preventing fuel and oil leakage. The rings are made from high-temperature, low-friction materials to ensure long-lasting performance and reduced engine wear.

Additionally, the piston kit includes new piston pin bushings, which are crucial for maintaining proper piston-to-crankshaft clearance and ensuring smooth engine operation. The bushings are made from high-quality materials that provide excellent wear resistance and ensure a snug fit.

Installing the WISCO MN/21YC piston kit is a straightforward process, and all necessary installation hardware is included in the kit. This piston kit is an excellent investment for any Ski-Doo Summit 670 owner seeking improved performance, reliability, and durability for their snowmobile. With its high-quality materials, precise machining, and proven design, the WISCO MN/21YC piston kit is the perfect choice for serious snowmobilers.

The WISCO MN/21YC piston kit is a popular aftermarket option for the 1995-1997 Ski-Doo Summit 670 engine. Here are some pros and cons to help you make an informed decision about whether to purchase this kit.

1. Improved Performance: These pistons are designed to provide better compression and increased power output compared to OEM pistons. This can result in improved engine performance and a more responsive machine.

2. Durability: WISCO pistons are known for their high-quality materials and manufacturing processes, which can help extend the life of your engine. The piston skirts are chrome-plated to reduce friction and prevent scuffing, and the piston rings are made from high-temperature materials to ensure a good seal.

3. Cost-Effective: Replacing the pistons in your Ski-Doo engine can be a costly repair, but the WISCO MN/21YC kit is often more affordable than OEM pistons. This can be a good option for those who want to save money while still improving their engine's performance.

4. Easy Installation: The piston kit comes with all the necessary components for a straightforward installation, including new piston pins, piston rings, and circlips. This can save you time and money by eliminating the need to source these parts separately.

1. Potential for Engine Damage: Installing aftermarket pistons can carry some risk, as there is a chance that they may not fit perfectly or cause damage to other engine components. It's important to ensure that the pistons are installed correctly and that all clearances are within spec.

2. Lack of Warranty: WISCO pistons do not come with the same level of warranty coverage as OEM pistons. This means that if you experience any issues with the pistons, you may be responsible for the cost of repairs.

3. Potential for Noise: Some users have reported that after installing the WISCO pistons, their engines became louder than before. This is likely due to the improved compression and increased power output, which can result in more noise during operation.

The WISCO MN/21YC piston kit for the 1995-1997 Ski-Doo Summit 670 engine offers several advantages, including improved performance, durability, cost-effectiveness, and easy installation. However, it also comes with some potential risks, such as the possibility of engine damage and a lack of warranty coverage. Ultimately, the decision to purchase this kit depends on your personal priorities and risk tolerance. If you're looking to maximize engine performance and save some money, then the WISCO pistons may be a good option for you. However, if you prefer the peace of mind that comes with OEM parts and warranty coverage, then you may want to stick with the factory pistons.

If you're considering purchasing the WISCO MN/21YC piston kit for your Ski-Doo Summit 670 engine, I would recommend doing your research and ensuring that you're installing the pistons correctly. This may involve consulting the WISCO installation guide or seeking the assistance of a professional mechanic. Additionally, be sure to source the kit from a reputable dealer to ensure that you're getting a high-quality product. Finally, consider weighing the potential benefits against the risks and making an informed decision based on your personal priorities and budget.

Details:

part #: mn21yc price

• $168.36

specifications enginesnowmobile:

• for models: Summit
• for makes: Ski-doo
• for years: 1995-1997
• brand: Wiseco
• mpn: Mn/21yc
• compatible year: 1997 1996 1995
• compatible model: Summit 670
• bundle description: 1 Pc Genuine Wiseco Piston Kits
• type: Piston Kits
• core charge: Free No Core Charge
• fitment type: Direct Replacement

returns enginesnowmobile:

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

payments enginesnowmobile:

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

shipping enginesnowmobile:

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

seller enginesnowmobile:

• rating: 96.6%
• city: Multiple warehouses
• # reviews: 9395

general enginesnowmobile:

• condition: New
• Snowmobile Parts > Engines Components > Snowmobile Engine Components

offer enginesnowmobile:

• sold: 0
• started: July 28, 2025
• quantity: 1
• options: Ship-to-home
• availability: In Stock

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