Wiseco Racer Elite Piston Kit RE900M04750 — Yamaha YZ85 2002-2026

Wiseco Racer Elite Piston Kit RE900M04750 — Yamaha YZ85 2002-2026

Product Description

The Wiseco Racer Elite™ Series 2-Stroke Piston Kit is engineered to provide professional-grade performance and reliability for your Yamaha YZ85. Designed for racers and enthusiasts who demand the highest quality, this kit features race-proven technology built to withstand the extreme stresses of high-RPM 2-stroke competition.

This piston is forged from a high-performance 2000 Series alloy, utilizing a dedicated forging process that achieves a superior strength-to-weight ratio. With advanced ArmorFit™ skirt coating for precise bore conformity and ArmorPlating® crown protection to resist detonation and wear, this kit ensures optimal engine longevity and consistent power output throughout the entire race season.

Top Features: Wiseco Racer Elite Piston Kit

• 2000 Series Alloy: Extreme strength designed specifically for high-stress, high-RPM riding conditions.
• ArmorFit™ Skirt Coating: Conforms to the cylinder bore for ultimate piston control, reduced friction, and quiet operation.
• ArmorPlating® Technology: Protects the piston crown from harmful detonation and enhances pin-bore longevity.
• Enhanced Sealing: Premium-quality rings designed to maximize compression and engine efficiency.
• Made in the USA: Precision-engineered and manufactured for consistent, world-class quality.

Please review the detailed compatibility data below to ensure an exact fitment match for your motorcycle before finalizing your purchase.

Fitment List

Year Range	Vehicle Brand	Vehicle Model & Sub-Model
2002-2026	Yamaha	YZ85

Frequently Asked Questions

Q: Should I measure my cylinder bore before installing this piston?
A: Absolutely. Even with a high-quality piston, always verify your cylinder tolerances. Proper clearance is critical for the long-term health and performance of 2-stroke engines.

Q: Do I need to replace the wrist pin bearing when installing this kit?
A: We highly recommend replacing your wrist pin bearing every time you install a new piston. It is an inexpensive insurance policy to prevent catastrophic engine failure.

Expert Pro-Tip

Expert Pro-Tip: When breaking in a new forged piston, avoid long periods of constant throttle. Vary your RPMs frequently during the first hour of riding to allow the piston rings to seat properly against the cylinder wall. This creates a much better seal and helps your engine maintain peak compression for a longer service life.

Recommended Pairings

Recommended Pairings:
o Yamaha YZ85 Performance Parts & Upgrades
o Yamaha 2-Stroke Performance Parts
o Essential Maintenance & Motorcycle Tools

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