519M05400 Std Piston Kit for Suzuki RM125 1985-1986 54.00 mm Standard Bore

Piston Kit for Suzuki RM125

This Wiseco 519M05400 piston kit is a standard bore replacement piston assembly for the Suzuki RM125, sized at 54.00 mm and supplied with the components needed to refresh a worn top end.

Overview

This Wiseco piston kit gives riders a complete top-end replacement for the Suzuki RM125. The 54.00 mm standard bore piston restores compression and ring seal in a cylinder that remains within factory spec. It suits riders rebuilding a 1985 or 1986 RM125 for trail, track, or restoration work.

Built For Performance

• Wiseco 519M05400 piston kit sized at 54.00 mm standard bore
• Forged piston construction for strength under high-rpm two-stroke loads
• Ring set matched to the standard bore for consistent sealing
• Wrist pin and circlips included for a complete top-end rebuild
• Designed as a direct-fit replacement for the Suzuki RM125 top end
• Standard sizing suits cylinders that remain within factory wear limits

Fits These Machines

• for Suzuki RM125 1985
• for Suzuki RM125 1986

On-The-Job Use

• Top-end rebuilds on a 1985 or 1986 Suzuki RM125
• Motocross and off-road riding where compression loss needs correcting
• Restoring a vintage RM125 engine during a full rebuild
• Standard bore refresh when the cylinder needs no oversize work

Specs At A Glance

Good To Know

Q: Does this piston require cylinder boring? A: No, this is a standard bore piston at 54.00 mm and fits a cylinder that is still within factory wear limits.

Q: Is this an original Suzuki part? A: No, this is a Wiseco piston kit made for the Suzuki RM125 and is not an original equipment manufacturer part.

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