Yamaha YZ85 YZ 85 Top End Rebuild Kit Stock Bore Cylinder Wiseco Assembly Repair

Yamaha YZ85 Top End Rebuild Kit Stock Bore Cylinder Wiseco/Wossner Piston 2002-2018

📖 Product Description

Restore the power, compression, and reliability of your 2002-2018 Yamaha YZ85 with this complete Top End Rebuild Kit from BPRATV. Designed as a premium stock bore replacement, this kit includes a brand-new aftermarket cylinder paired with your choice of a Wiseco or Wossner forged piston, providing outstanding durability and performance for motocross, trail riding, or race applications.

Every major wear component needed for a complete top-end refresh is included, along with premium Maxlock hardware upgrades, making installation easier while improving long-term reliability. Whether you're rebuilding after hours of riding or replacing a damaged cylinder, this complete package gets your YZ85 back on the track with confidence.

🔥 Key Features & Benefits

• Aftermarket stock bore cylinder built for OE-style fit and dependable performance.
• Wiseco or Wossner forged piston delivers superior strength and durability over cast pistons.
• Nitride-coated high-temperature piston rings provide excellent sealing and long service life.
• Premium Maxlock head studs and cylinder studs improve clamping force and serviceability.
• Complete gasket kit and hardware minimizes downtime and simplifies installation.
• Ideal for stock engine rebuilds while maintaining factory displacement and performance.

📦 Product Contents

• Aftermarket stock bore cylinder
• Wiseco or Wossner forged piston**
• Nitride-coated high-temperature piston rings
• Chrome wrist pin
• Circlips
• Wrist pin bearing
• Complete top end gasket kit
• Maxlock cylinder head stud kit with nuts
• Maxlock Allen drive cylinder-to-case studs
• Cylinder-to-case dowel pins
• Spark plug

✅ Compatibility

This complete top end rebuild kit is designed for the following Yamaha motocross models:

• Yamaha YZ85 (2002-2018)
• Fits all standard Yamaha YZ85 models equipped with the factory stock bore engine.

❓ Frequently Asked Questions

• Q: Is this a stock bore replacement kit?

  A: Yes. This kit includes a stock bore replacement cylinder and components designed to restore original engine displacement.

• Q: Which piston brand is included?

  A: The kit includes either a Wiseco or Wossner forged piston depending on inventory, both offering premium forged construction and exceptional durability.

• Q: Does this kit include all installation hardware?

  A: Yes. The kit includes premium Maxlock head studs, cylinder studs, dowel pins, gaskets, and related installation components.

• Q: Is the spark plug included?

  A: Yes. A new spark plug is included to complete your top end rebuild.

🌟 Why Buy from BPRATV? Trusted Performance Experts 🌟

At BPRATV, our promise is unwavering: The Best Parts. The Best Performance. The Best Price. We specialize in premium ATV and motocross engine components trusted by riders and builders nationwide. Our kits combine industry leading brands when applicable to deliver reliability and performance you can trust. Trust BPRATV to keep your Yamaha YZ85 running at its best, every single time.

Restore your Yamaha YZ85 with premium forged components and get back on the gate with confidence--order your complete top end rebuild kit today!

BPRATV - The Best Parts. The Best Performance. The Best Price.

BRAPPPPPPPPPP!

© BPRATV LLC 1-year limited warranty from the manufacturer for material or workmanship defects.* Due to the nature of high performance and racing applications, BPRATV LLC components are sold without express warranty or any implied warranty of merchantability or fitness for a specific purpose. BPRATV LLC shall not, under any circumstances, be liable for any specific, incidental or consequential damages, including, but not limited to, damage, or loss of property or equipment, loss of profits or revenue(s), cost of purchased or replacement goods, or claims of customers of the purpose, which may arise and/or shall result from sale, installation or use of these parts. Installation of these parts may void vehicle manufacturers warranty coverage and/or may cause the vehicle to be illegal in some locations.

This product is exempt from the emission standards and related requirements of 40 C.F.R. § 1051 as provided by 40 C.F.R. § 1051.620, and California law [e.g., vehicle code§§ 27156 and 38391]. This product is sold only for use in connection with EPA-certified, purpose-built, nonroad vehicles used solely for closed course, nonroad competition/racing and not used for any recreational purpose or on public highways or right of ways maintained by and open to the public.