2889CDW Ring Set 73.40mm for Wiseco

Ring Set for Wiseco

This 73.40mm piston ring set is designed to seal the combustion chamber and control oil on high-performance four-stroke engines, cross-referencing Wiseco part number 2889CDW.

Overview

This ring set is built to deliver consistent compression sealing for rebuilt or freshly bored top ends. The 73.40mm bore size matches a specific overbore, so it suits riders and builders running a piston in that exact diameter. Use it as the sealing component in a Wiseco-based piston assembly.

Built For Performance

• 73.40mm bore diameter for a precise fit in the matching cylinder
• Multi-piece ring design covering compression and oil control duties
• Construction suited to high-rpm four-stroke operation
• Identified by part number 2889CDW for easy reference
• Intended for use with a piston of matching 73.40mm size

Fits These Machines

• for machines running a 73.40mm bore piston

On-The-Job Use

• Top-end rebuilds after a cylinder bore or hone
• Refreshing ring seal on a worn piston assembly
• Engine builds specifying the 73.40mm overbore size

Specs At A Glance

Good To Know

Q: How do I know this ring set matches my piston? A: Confirm the bore size on your piston and cylinder, as this set is specified at 73.40mm. Ring sets are made to match a specific bore diameter and should not be swapped between sizes.

Q: Can I install these rings without checking end gap? A: Ring end gap should be measured and set during assembly as part of a proper rebuild. Skipping that step risks poor sealing or ring damage.

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