Product description

The Wossner Piston Kit For Yamaha YZF250 2019-2020 +0.01 mm Standard Size B is part of the latest collection from Wossner.

Features:

• Enhanced piston pin oiling slots, radial boss machining, and annular grooves for improved wrist pin lubrication
• Lightweight piston with a tight piston wall clearance for a quieter running engine
• Skirt coated for reduced friction and improved break in performance
• Ring land treatment for improved ring seal and oil control
• Double bridged forging design where noted
• Kit includes piston, rings, wrist pin and pin locks
Double bridge forging. 3D crown. Two ring design. Kit Includes: • Piston #8957DB • Ring Set #RIK77.00D • Wrist Pin #WP070-SP • Retaining Clips #CW16

Specifications:

• Bore - Oversize Metric: +0.01 mm
• Bore - Oversize: +0.01 mm
• Bore Size: 77.01 mm
• Compression Ratio Imperial: 14.0
• Compression Ratio: 14.0
• Engine Type: 4-Stroke
• Model: Premium Series
• Piston Material: Aluminum Alloy| Forged
• Piston Size Metric: 76.97 mm
• Piston Size: 76.97 mm
• Product Name: Piston Kit
• Stroke Length: 53.60 mm

To fit:

• YAMAHA WR 250 F 2020 European Models
• YAMAHA WR 250 F 2021 European Models
• YAMAHA YZ 250 FX 2020 American Models
• YAMAHA YZ 250 F 2019 All Models
• YAMAHA YZ 250 F 2020 All Models

Manufacturer part number: 8957DB

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Contents

Your package will include the following:

• 1 X Wossner Piston Kit For Yamaha YZF250 2019-2020 +0.01 mm Standard Size B