455M05200 Wiseco Piston Kit .080 for Yamaha YZ100 1976-1983 52.00 mm

Wiseco .080 Piston Kit for Yamaha YZ100

This Wiseco .080 overbore piston kit (455M05200, 52.00 mm) refreshes top-end compression for 1976-1983 Yamaha YZ100 two-stroke machines.

Overview

This .080 overbore piston kit for Yamaha YZ100 models brings tired vintage top ends back to life with a 52.00 mm piston built to the 455M05200 specification. It suits restorers and riders keeping 1976-1983 YZ100 machines running strong. The kit delivers the compression and sealing that vintage two-stroke performance depends on.

Built For Performance

• Forged piston construction for reliable strength in two-stroke service
• .080 in overbore corrects cylinder wear on older engines
• 52.00 mm piston diameter matched to 455M05200 specification
• Kit includes piston, rings, wrist pin and circlips for a full top-end rebuild
• Precision-machined ring grooves for consistent compression
• Built to suit vintage YZ100 cylinder specifications

Fits These Machines

• for Yamaha YZ100 1976-1983

On-The-Job Use

• Vintage motocross restoration projects
• Top-end rebuilds on worn YZ100 engines
• Classic off-road riding maintenance
• Period-correct race bike preparation

Specs At A Glance

Good To Know

Q: What is included with this piston kit? A: Wiseco kits of this type generally ship with the piston, rings, wrist pin and circlips. Verify the package contents before ordering.

Q: Does the cylinder need machining for this kit? A: A .080 overbore requires boring and honing to match the 52.00 mm piston. Measure your bore first to confirm it can be taken to this size.

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