WISECO 521M05700 Nos Piston Ring Pin Circlip Kit Piston/ring/pin/circlip 57MM 1MM

( Brand: Wiseco ), ( Manufacturer Part Number: 521M05700 ), ( Engine Type: 2-stroke ), ( Type: Piston Kit ), ( Machine Type: Off-road Motorcycle ), ( Items Included: Piston Rings, Wrist Pin ), ( Country/region Of Manufacture: United States )

Review WISECO Nos Piston/ring/pin/circlip Kit 57mm Bore 1mm Over fits YZ125 1985

The WiseCO 521M05700 NOS (New Old Stock) piston/ring/pin/circlip kit is specifically designed for the 1985 Yamaha YZ125 motorcycle. This kit is a must-have for enthusiasts and Mechanics who are restoring or rebuilding their classic two-stroke motorcycles.

The piston in this kit is made from high-quality forged aluminum, ensuring both durability and consistent performance. It comes with a pre-combed, gudgeon pin boss, and a flat top design for a perfect seal and optimal combustion.

The piston rings included in the kit are made from a heat-resistant material that guarantees a tight seal and reduces the amount of compression loss. These rings come in the following sizes: the compression ring is 1mm thick, the oil control ring is 1mm thick, and the skirt ring is 1mm thick.

The circlips in the kit are made from a robust and durable material, ensuring they securely hold the piston rings in place. These circlips have a diameter of 57mm and are designed to fit perfectly on the piston.

The kit also includes piston pins, which are essential for connecting the piston to the crankshaft. These pins are made from high-tensile steel, ensuring they can withstand the high loads and stresses of the engine.

Overall, the WiseCO 521M05700 NOS piston/ring/pin/circlip kit is an essential component for any Yamaha YZ125 enthusiast or Mechanic. Its high-quality materials and precise fit ensure a reliable and efficient restoration or rebuild of your classic motorcycle.

WiseCO 521M05700 NOS Piston/Ring/Pin/Circlip Kit for 1985 YZ125: A Comprehensive Analysis

The WiseCO 521M05700 NOS (New Old Stock) piston/ring/pin/circlip kit is designed for the 1985 YZ125 motorcycle. This kit includes all the necessary components to rebuild the engine's top end. In this analysis, we will discuss the pros and cons of purchasing this kit to help you make an informed decision.

1. Authenticity: This kit consists of new, original parts that were manufactured during the production era of the YZ125. These parts will ensure the engine retains its original specifications and are likely to perform better than aftermarket alternatives.

2. Completeness: The kit includes all the necessary components to rebuild the top end of the engine. This eliminates the need to search for individual parts, potentially saving time and money.

3. Durability: New parts are inherently more durable than used or rebuilt parts. Installing this kit can help increase the lifespan of the engine.

4. Availability: Obtaining individual components for a motorcycle that is no longer in production can be challenging. Having a complete kit available can simplify the rebuild process.

1. Cost: New, authentic parts can be expensive, especially when compared to aftermarket alternatives. The total cost of this kit may be a significant investment for some.

2. Time: Installing the new components may take longer than installing aftermarket parts due to the need to properly prepare and fit each individual piece.

3. Complexity: Rebuilding an engine is a complex process that requires specialized tools and knowledge. Installing this kit may not be suitable for those who lack experience or confidence in working on their motorcycle.

The WiseCO 521M05700 NOS piston/ring/pin/circlip kit for the 1985 YZ125 offers several advantages, including access to authentic parts, completeness, and durability. However, it also comes with potential drawbacks, such as cost, time, and complexity. Ultimately, the decision to purchase this kit depends on your budget, experience, and the value you place on authenticity and completeness.

If you are an avid collector or racer who values authenticity and completeness above all else, this kit may be an excellent investment. However, if you are on a tight budget or prefer a more cost-effective solution, you may want to consider aftermarket alternatives.

If you have the financial resources and the desire to restore your 1985 YZ125 to its original glory, the WiseCO 521M05700 NOS piston/ring/pin/circlip kit is an excellent choice. It offers the peace of mind that comes with using new, original parts and the satisfaction of knowing that your motorcycle retains its original specifications. However, if you are looking for a more affordable solution or prefer the convenience of aftermarket parts, you may want to explore other options. Regardless of your decision, ensure that you have the necessary experience, tools, and knowledge to complete the engine rebuild safely and effectively.

Details:

New old stock Wiseco Piston Kit for the 1985 YZ 125 2-stroke motorcycle. Kit includes Piston Oversize.

part #: 521m05700 prices

• $69.95-$127.35

specifications pistondon:

• for models: Yz125
• for years: 1985
• brand: Wiseco
• mpn: 521m05700
• engine type: 2-stroke
• type: Piston Kit
• machine type: Off-road Motorcycle
• items included: Piston Rings, Wrist Pin
• country/region of manufacture: United States

offer pistondon:

• quantity: 1
• options: Ship-to-home
• availability: In Stock
• started: September 7, 2025
• sold: 0

payments pistondon:

• other
• credit card: Visa
• wallet: Paypal

seller pistondon:

• rating: 100.0%
• city: Hesston, Kansas
• # reviews: 2331

shipping pistondon:

• carrier: USPS
• type: Fixed
• class: Standard
• service: USPS Ground Advantage
• transit: 5-11 Days
• cost: $6.00

general pistondon:

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

returns pistondon:

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

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