ATHENA S4F05300002B Big Piston 5.5 52.96MM 105CC 13.8

( Brand: Athena ), ( Manufacturer Part Number: S4F05300002B ), ( Part Type: Piston ), ( Warranty Details: See Manufacturer )

Review ATHENA Repl Big Bore Piston 5.5 52.96mm Fits Yamaha fits YZ85 2002–2018

The Athena S4F05300002B big piston kit is an excellent upgrade solution for Yamaha YZ85 motorcycles produced between 2002 and 2018. This piston kit is specifically designed for the 105cc engine, boasting a big piston size of 52.96mm. The oversized piston significantly enhances engine performance by increasing displacement and power output, making it an excellent choice for riders seeking improved acceleration and overall engine responsiveness.

Crafted from high-quality forged aluminum alloy, this piston kit is built to withstand the rigors of off-road racing and aggressive riding styles. The piston features a state-of-the-art ring package, including a compression ring, oil control ring, and skirt ring, ensuring optimal engine sealing and performance. The piston also comes with a lightweight and durable piston pin and a high-performance wrist pin retainer.

The Athena S4F05300002B piston kit is designed to provide a perfect fit and easy installation, ensuring a seamless upgrade experience for motorcycle enthusiasts. The piston kit includes all necessary hardware, making it a complete and convenient solution for those looking to enhance their Yamaha YZ85's engine performance.

In summary, the Athena S4F05300002B big piston kit is an excellent choice for Yamaha YZ85 owners seeking to boost their engine's displacement, power output, and overall performance. Its high-quality materials, innovative design, and ease of installation make it a popular and effective upgrade option for off-road enthusiasts and racers.

Pros and Cons of Buying Athena S4F05300002B Big Piston for Yamaha YZ85 (2002-2018)

a. Increased Power: The Athena S4F05300002B big piston kit can help increase the power output of your Yamaha YZ85, providing a more responsive and powerful engine.

b. Cost-Effective: Compared to buying a new motor or even a complete rebuild, installing a big piston kit is a cost-effective solution for enhancing the performance of your YZ85.

c. Durability: The Athena piston kit is made from high-quality materials, ensuring durability and longevity, especially when compared to stock OEM pistons.

d. Easy Installation: The kit comes with all the necessary hardware for installation, making it a relatively straightforward process for those with basic mechanical skills.

a. Potential Engine Noise: Installing a big piston kit can result in increased engine noise due to the larger size and higher compression ratio.

b. Fuel Consumption: The increased power output may lead to higher fuel consumption, which can result in additional costs over time.

c. Requires Careful Setup: Proper setup and tuning are crucial when installing a big piston kit to ensure optimal performance and to avoid damaging the engine.

d. Not Suitable for All Riders: The increased power output may not be suitable for all riders, especially beginners or those not experienced with high-performance motorcycles.

The Athena S4F05300002B big piston kit offers several advantages, including increased power, cost-effectiveness, and durability. However, it also comes with potential drawbacks, such as increased engine noise, higher fuel consumption, and the need for careful setup. Ultimately, the decision to purchase this kit depends on the individual rider's preferences, skill level, and budget.

If you are an experienced rider seeking more power and performance from your Yamaha YZ85 and are willing to accept the potential drawbacks, then the Athena S4F05300002B big piston kit could be an excellent investment. However, if you are a beginner or prefer a quieter, more fuel-efficient ride, it might be best to consider other options. Always ensure proper installation and setup to ensure optimal performance and engine longevity.

Details:

Piston tooling allows for the lightest available product. Includes 3% copper in materials for better heat resistance. Athena pistons are sold individually. Athena Repl Big Bore Piston 5.5 52.96mm 105cc 13.8:1 Fits Yamaha YZ85 2002 -2018: Only works with machines equipped Cylinder Kits.

Athena Big Bore pistons are made from a high-silicon aluminum alloy, the same material used to produce Formula Kits include anti-wear coated piston, ring, pin and cir clips. All pistons are forged using a precision heat-treatment process that allows for production tolerances of just 0.01mm. This item fits the following applications.

part #: s4f05300002b prices

• $179.30-$218.45

specifications pistondon:

• for models: Yz85
• for makes: Yamaha
• for years: 2002-2018
• brand: Athena
• mpn: S4f05300002b
• part type: Piston
• warranty details: See Manufacturer

returns pistondon:

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

payments pistondon:

• wallet: Paypal
• other
• credit card: Mastercard

seller pistondon:

• city: Grand Rapids, Michigan
• rating: 99.2%
• # reviews: 604841

offer pistondon:

• started: February 26, 2025
• quantity: 2
• options: Ship-to-home
• sold: 0
• availability: In Stock

general pistondon:

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

shipping pistondon:

• class: Standard
• cost: $0.00
• service: Standard
• type: Fixed
• transit: 3-8 Days

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