508M05000 Wiseco .080 Oversize Piston Kit 50.00mm for Yamaha YZ80 1984

Wiseco .080 Piston Kit for Yamaha YZ80

This Wiseco .080 piston kit for Yamaha YZ80 brings a 1984 top end back to spec with a 50.00 mm piston, cross referencing OEM part 508M05000.

Overview

This Wiseco .080 piston kit is a top end rebuild component for the 1984 Yamaha YZ80. The 50.00 mm piston suits a .080 oversize bore, allowing a worn cylinder to be refinished and placed back into service. It is intended for riders and mechanics handling YZ80 minis top end work.

Built For Performance

• .080 oversize bore sizing for refinished cylinders
• 50.00 mm piston diameter
• Wiseco forged piston construction
• Kit format for a complete top end rebuild
• Cross references OEM 508M05000

Fits These Machines

• for Yamaha YZ80 1984

On-The-Job Use

• Top end rebuilds after cylinder scoring or seizure
• Oversize bore correction on worn cylinders
• Motocross and trail maintenance on YZ80 minis
• Shop rebuilds where a matched piston and ring set is needed

Specs At A Glance

Good To Know

Q: What does .080 oversize mean for my cylinder? A: It means the cylinder must be bored and honed to match the 50.00 mm piston, so measure your bore before ordering. Q: Is this piston kit a direct fit? A: It is built for Yamaha YZ80 1984 applications, but confirming your model year and current bore size is recommended.

Slight variation in finish or dimensions may occur between production runs, and fit can depend on serial number, so confirm compatibility before ordering.