YAMAHA 5PA-WB033-00-B0 Top Piston End Engine Rebuild Kit

( Manufacturer Part Number: 5PA-WB033-00-B0 ), ( Engine Type: 2-stroke ), ( Type: Piston Set ), ( Items Included: Gasket, Piston Rings, Wrist Pin ), ( Vintage Part: No )

Review YAMAHA New Genuine Piston Top End Engine Rebuild Kit fits YZ85 YZ 1985–2018

Yamaha 5PA-WB033-00-B0 Piston Top End Engine Rebuild Kit (2002-2018 YZ85, YZ 85)

The Yamaha 5PA-WB033-00-B0 Piston Top End Engine Rebuild Kit is designed specifically for the 2002-2018 Yamaha YZ85 and YZ 85 motorcycles. This comprehensive kit includes all the necessary components for a successful piston top end engine rebuild.

The heart of this kit is the high-quality, forged piston made of aluminum. It features a lightweight, yet robust design that ensures durability and excellent performance. The piston comes with a new ring set, which includes a compression ring, an oil control ring, and a piston ring. These rings are precision machined to ensure proper sealing and optimal engine efficiency.

Additionally, the kit includes a new cylinder kit. This includes a cylinder sleeve, a cylinder head gasket, and a new exhaust port gasket. The cylinder sleeve is designed to provide a perfect fit and long-lasting performance. The cylinder head gasket and exhaust port gasket ensure a leak-free seal between the cylinder and head, as well as between the cylinder and exhaust port, respectively.

Moreover, the kit comes with a new crankshaft main bearing and a new connecting rod bearing. These bearings are precision machined to provide a perfect fit and ensure a smooth engine operation. They help minimize engine wear and prolong the engine's lifespan.

The kit also includes various other components such as new piston pin, piston pin bushings, piston pin retainer, and new gaskets for the timing cover and water pump. These components are essential for a successful engine rebuild and ensure a proper engine function.

In summary, the Yamaha 5PA-WB033-00-B0 Piston Top End Engine Rebuild Kit is a complete solution for rebuilding the piston top end of the 2002-2018 Yamaha YZ85 and YZ 85 motorcycles. It includes high-quality, precision-machined components that ensure a successful rebuild and prolong the engine's lifespan. With this kit, you can restore your engine to its original performance and enjoy your motorcycle to the fullest.

Piston Top End Engine Rebuild Kit (Yamaha 5PA-WB033-00-B0) for YZ85 (2002-2018): Pros, Cons, Conclusion, and Recommendation

The Yamaha 5PA-WB033-00-B0 piston top end engine rebuild kit is a popular choice among YZ85 owners for engine repairs. In this analysis, we will discuss the advantages and disadvantages of this rebuild kit, followed by a conclusion and recommendation.

1. Compatibility: This rebuild kit is designed specifically for Yamaha YZ85 motorcycles manufactured between 2002 and 2018.

2. High-quality components: The piston top end engine rebuild kit includes new pistons, piston rings, and other essential parts. These parts are made from high-quality materials that ensure durability and reliable performance.

3. Easy installation: The kit comes with clear instructions, making it relatively easy for hobbyists and professionals to install.

4. Cost-effective: Replacing the entire engine can be expensive. By opting for a rebuild kit, YZ85 owners can save money by only replacing the faulty components.

1. Time-consuming: Engine rebuilding is a labor-intensive process, and it may take several hours to complete the job.

2. Skills required: Engine rebuilding involves disassembling and reassembling engine components. A lack of mechanical skills or experience may result in damage to the engine or incorrect installation of parts.

3. Potential for damage: When removing and installing engine components, there is a risk of damaging the engine or other parts.

4. Additional costs: While the rebuild kit itself is cost-effective, there may be additional costs for tools, gaskets, and seals that are not included in the kit.

The Yamaha 5PA-WB033-00-B0 piston top end engine rebuild kit offers several advantages, including compatibility, high-quality components, easy installation, and cost-effectiveness. However, it also comes with disadvantages, such as being time-consuming, requiring skills, the potential for damage, and additional costs.

If you are comfortable with engine rebuilding and have the necessary skills and tools, the Yamaha 5PA-WB033-00-B0 piston top end engine rebuild kit is an excellent choice for YZ85 owners looking to save money on engine repairs. If you lack the necessary skills or experience, it may be best to consult a professional mechanic to ensure the job is done correctly. Alternatively, you could consider purchasing a remanufactured engine or a used engine to avoid the hassle of engine rebuilding.

Details:

New Yamaha OEM Top End Piston Engine Rebuilt Kit, Brand new Genuine top end piston rebuild kit. Never used and comes with all the parts to replace top end piston, ring, pin, bearing, cir clips, cylinder gasket, Will work on following: 2002 - 2018 Yamaha YZ85.

part #: 5pawb03300b0 prices

• $83.99-$138.80

specifications pistondon:

• for models: Yz85, Yz
• for makes: Yamaha
• for years: 1985-2018
• mpn: 5pa-wb033-00-b0
• engine type: 2-stroke
• type: Piston Set
• items included: Gasket, Piston Rings, Wrist Pin
• vintage part: No

offer pistondon:

• availability: In Stock
• started: October 21, 2025
• best offers: True
• quantity: 1
• sold: 0
• options: Ship-to-home

seller pistondon:

• city: Winslow, New Jersey
• # reviews: 171
• rating: 100.0%

shipping pistondon:

• class: Standard
• service: USPS First Class
• type: Fixed
• carrier: USPS
• transit: 3-8 Days
• cost: $5.00

general pistondon:

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

payments pistondon:

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

returns pistondon:

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

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