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Yamaha

2002-2025 Yamaha YZ85 Engine Rebuild Service

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$750.00
SKU:
YZ85ERS-TER
Condition:
Refurbished
Availability:
2 – 4 weeks after receiving engine
Shipping:
Free Shipping
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2002–2025 Yamaha YZ85 Engine Rebuild Service
Give your YZ85 the fresh power, reliability, and crisp throttle response it was built for.
If you're dealing with low compression, bogging, rattling noises, or a seized bottom end, it’s time for a professional rebuild.
We offer two factory‑level rebuild options, both using 100% Genuine OEM Yamaha parts.
Option 1: Top End Rebuild Service
(Recommended for low compression, smoking, oil loss, or top‑end ticking noises)
Service Includes:

  • Clean, prep, and disassemble top end
  • Inspect, clean, and measure all top‑end components
  • Cylinder deglaze / hone
  • Cylinder head carbon removal + flatness check
  • Install all new Genuine OEM Yamaha top‑end components
  • Reassemble to factory torque specifications

Parts Included for Option 1:

  • Genuine OEM Yamaha Piston
  • Genuine OEM Yamaha Piston Ring Set
  • Genuine OEM Yamaha Wrist Pin
  • Genuine OEM Yamaha Circlips
  • Genuine OEM Yamaha Top End Gasket Kit

Option 2: Complete Engine Rebuild Service
(Recommended for knocking noises, seized engine, worn crank, transmission issues, or full engine failure)
Service Includes:
Everything in the Top End Rebuild, plus:

  • Full engine disassembly
  • Clean, inspect, and measure all internal components
  • Vapor/media blasting of cases, cylinder, and head
  • OEM‑style color‑matched case paint with oven‑cure finish
  • Transmission and clutch inspection
  • Install all new OEM Yamaha bottom‑end and top‑end components
  • Reassemble to factory torque specifications

Parts Included for Option 2:

  • Genuine OEM Yamaha Crankshaft Assembly
  • Genuine OEM Yamaha Crank Bearings
  • Genuine OEM Yamaha Piston
  • Genuine OEM Yamaha Piston Ring Set
  • Genuine OEM Yamaha Wrist Pin
  • Genuine OEM Yamaha Circlips
  • Genuine OEM Yamaha Top End Gasket Kit
  • Genuine OEM Yamaha Bottom End Gasket Kit & Oil Seal Kit
  • Genuine OEM Yamaha Clutch Plate Set
  • Genuine OEM Yamaha Water Pump Rebuild Kit

Benefits

  • 100% Genuine OEM Yamaha Parts: Perfect fit, factory reliability, and long‑term durability
  • Factory‑Level Precision: Every component measured and assembled to Yamaha specifications
  • Restored Power & Efficiency: Fresh compression and balanced internals bring your YZ65 back to peak performance
  • Cost‑Effective: Professional rebuild without dealership pricing

Additional Information

  • Pricing includes all listed labor, parts and return shipping
  • If additional parts are needed or requested, you’ll receive a detailed estimate—with no extra labor charges
  • Professionally rebuilt with precision, cleanliness, and care by certified technicians

Bonus: When your engine is complete, we pay for shipping back to you!
Turnaround time: 2 to 4 weeks after receiving your engine.
Fitment: This service is for all 2002-2025 Yamaha YZ85 models.
See our Shipping Page for help with shipping your engine

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Shipping

Please allow 2 business days for processing. Order conformation email will be sent. Please allow 5–7 business days for delivery after processing. We’ll send you tracking info as soon as your order ships! You may also log into your account for updates to your order.

Return Policy

We must be notified within 48 hours of receiving your package of any damage caused during shipping. NO Returns on Any Installed Parts. NO Returns on Tires. NO Returns after 14 days. No Cancellations. See our full shipping and return policy here. https://rebuiltpowersports.com/shipping-and-returns/

Products are guaranteed to fit for the model and model years described. Part numbers have been superceded to the most updated part numbers from the manufacturer. All incoming parts from manufacturers and out going parts to customers are 100% inspected for manufacturer defects, damage or missing items before shipping to customers.

Here are some questions and answers to help you along the way.

  • How long will it take to get my order?
    Many factors contribute to shipping. When a parts kit order is placed it usually takes 7 to 10 business days from time of order until the customer receives the order. Weekends and Holidays are not business days. But carriers do have delays due to weather and other events beyond our control.
  • Where is RebuiltPowerSports located?
    Rural Northern Minnesota. About 100 miles south of the Canadian border.
  • Do I have to pay Tax on my order?
    Only customers from Minnesota pay Tax. When you enter your zip code at time of checkout, the tax will be added if necessary.
  • Do you have parts for other kinds of vehicles?
    We have parts and do engine work for Honda, Yamaha, Suzuki, Kawasaki, and Polaris. ATV's , Side by Side's , and Dirt Bikes.
  • What kind of engine work do you do?
    We do CNC cylinder boring-honing, cylinder sleeving, cylinder plating, crankshaft rebuilding, cylinder head rebuilding, complete engine rebuilding, and full engine restorations.
  • What if some parts are no longer available or too old?
    We have partners that still have many Vintage NOS Parts for a lot of models back to about 1966. Not all OEM parts are still avaiable.
  • Do you offer Free Shipping?
    YES. We offer Free Shipping on all parts orders. We will also pay the return shipping for you on most repair services.
  • What is the turn around time to bore my cylinder?
    After we receive your cylinder, it will take about 2 weeks to get it back to you, unless more repair or special parts are needed. We can also supply you with a New Piston Kit & Gasket Kit.
  • How come I dont see my parts listed I need?
    With millions of parts available, it is very hard to list everything. We add new parts and engine repair services to models every day. If you dont see something you need, use our Contact Us page and send us a message. We answer emails 24/7. You will get a reply within 24 hours.
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