557M05400 Wiseco Std Piston Kit for Suzuki RM125 1987 54.00 mm

Piston Kit for Wiseco 557M05400 Std for RM125

This Wiseco 557M05400 Std piston kit is a standard bore 54.00 mm top-end assembly that restores compression and performance in a 1987 RM125 engine.

Overview

This Wiseco 557M05400 Std piston kit provides a standard bore 54.00 mm top end for a 1987 RM125. The kit pairs a forged piston with rings, wrist pin, and circlips so a worn cylinder can be rebuilt at the original bore size. It suits riders and mechanics doing stock-spec top-end work.

Built For Performance

• Forged piston construction for strength under high rpm
• Standard 54.00 mm bore size for a stock cylinder
• Std sizing keeps the original engine displacement
• Rings, wrist pin, and circlips included for a complete top-end refresh
• Designed to match Wiseco 557M05400 piston kit specifications

Fits These Machines

• for Suzuki RM125, 1987

On-The-Job Use

• Stock-spec top-end rebuilds after ring wear
• Motocross and off-road engine refreshes
• Standard bore cylinders that do not need resizing
• Seasonal engine maintenance and race prep

Specs At A Glance

Good To Know

Q: Does this piston kit fit an original bore cylinder? A: Yes, this is a standard 54.00 mm piston intended for a stock bore cylinder. Measure your bore first to confirm it is still within spec.

Q: What is included in the kit? A: The kit includes the 54.00 mm piston along with the rings, wrist pin, and circlips needed for a top-end rebuild. Check the listing contents for the exact included components.

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