4767M08700 Piston Kit for Yamaha SR500 1978-1981 87 mm 12:1 CR Wiseco

Wiseco Std Piston Kit for Yamaha SR500

This Wiseco Std Piston Kit for Yamaha SR500 delivers a forged replacement piston with rings, pin, and clips for a top-end rebuild, cross-referencing 4767M08700 at 87 mm bore with 12:1 compression.

Overview

This Wiseco Std Piston Kit for Yamaha SR500 is a forged piston assembly built for riders rebuilding a 500cc thumper top end. The Wiseco Std Piston Kit for Yamaha SR500 restores compression and sealing at the original 87 mm bore size. It suits mechanics, restorers, and racers working on 1978 through 1981 SR500 engines.

Built For Performance

• Forged piston construction for strength under high compression loads
• 12:1 compression ratio for strong combustion pressure
• 87 mm bore size matches the standard SR500 cylinder
• Kit includes piston, rings, wrist pin, and circlips
• OEM cross-reference 4767M08700 for easy lookup
• Machined ring grooves for consistent ring seal

Fits These Machines

• for Yamaha SR500 1978
• for Yamaha SR500 1979
• for Yamaha SR500 1980
• for Yamaha SR500 1981

On-The-Job Use

• Top-end rebuilds on worn or smoking SR500 engines
• Racing builds needing higher compression
• Vintage restoration projects
• Bore and hone refresh with standard-size piston

Specs At A Glance

Good To Know

Q: Does this kit fit my SR500? A: It is listed for 1978 through 1981 Yamaha SR500 models with an 87 mm standard bore, so confirm your model year and bore before ordering.

Q: Is machine work required? A: A standard-size piston usually calls for a clean, properly honed or bored cylinder to achieve correct piston-to-wall clearance.

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