235M05400 Wiseco Piston Kit for Yamaha DT100 1974-1993 54.00 mm .080

Wiseco .080 Piston Kit for Yamaha DT100

This Wiseco .080 oversize piston kit for Yamaha DT100 models is an engine rebuild component that restores compression and top-end performance, and it cross-references part 235M05400 with a 54.00 mm bore.

Overview

This Wiseco piston kit for Yamaha DT100 is a complete top-end replacement built for riders and mechanics rebuilding worn two-stroke engines. The kit delivers the 54.00 mm oversize bore needed to clean up a scored or out-of-spec cylinder, and it pairs with part 235M05400 so you can match it to your existing build sheet. It suits anyone restoring or maintaining a DT100 that needs dependable compression back in the top end.

Built For Performance

• Forged high-silicon aluminum construction for strength under heat and load
• Oversize 0.080 bore at 54.00 mm to correct worn cylinder dimensions
• Precision-machined ring grooves for consistent ring seating
• Kit format includes piston, rings, pin, and clips for a complete rebuild
• Engineered tolerances suited to two-stroke performance demands

Fits These Machines

• for Yamaha DT100, 1974-1993

On-The-Job Use

• Top-end rebuild after a seized or scored piston
• Routine engine refresh on a high-hour DT100
• Restoration projects bringing an older trail bike back to life
• Bore correction when the cylinder needs an oversize cleanup

Specs At A Glance

Good To Know

Q: Does this kit include everything needed for the top end? A: It ships as a piston kit with the piston, rings, wrist pin, and clips so the rebuild parts are on hand. Always check bore condition and clearance before install.

Q: Will the 0.080 oversize fit my stock cylinder? A: No, an oversize piston requires the cylinder to be bored and honed to match the 54.00 mm size. Confirm your machine's current bore and serial number before ordering.

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