4292M06700 Wiseco Std Piston for Yamaha YFM 200 Moto-4 1987-1988 67mm 10.25:1

Std Piston for Yamaha

This Wiseco standard bore piston is for the Yamaha YFM 200 Moto-4 and brings a worn top end back to spec, with the 67mm bore matching OEM cross-reference 4292M06700.

Overview

This Wiseco piston is a standard bore replacement for the Yamaha YFM 200 Moto-4, sized at 67mm with a 10.25:1 compression ratio. It replaces a worn or damaged piston without changing the cylinder bore. The piston is built for riders and mechanics rebuilding 1987 to 1988 YFM 200 Moto-4 engines.

Built For Performance

• 67mm standard bore size to match the original cylinder
• 10.25:1 compression ratio for strong throttle response
• Cross-references OEM part 4292M06700
• Forged construction for strength under load
• Machined ring grooves for consistent ring seal
• No cylinder boring required when the bore is in spec

Fits These Machines

• for Yamaha YFM 200 Moto-4 1987
• for Yamaha YFM 200 Moto-4 1988

On-The-Job Use

• Top end rebuilds on YFM 200 Moto-4 engines
• Replacing a scored or worn standard bore piston
• Restoring compression on high hour quads
• Trail and utility riding where torque matters

Specs At A Glance

Good To Know

Q: Can this piston be used in a worn cylinder? A: A standard bore piston is intended for a cylinder that still measures within spec; a worn or scored bore should be measured and bored if needed.

Q: Should I replace the rings and pin at the same time? A: Replacing the rings, pin, and clips along with the piston is standard practice during a top end rebuild.

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