3437X Ring Set 87.30mm for Wiseco

Ring Set for Wiseco

This Wiseco 3437X ring set, sized at 87.30mm, is a piston ring set that seals the combustion chamber and controls oil on the cylinder wall for high-compression powersports and small engine builds.

Overview

The Wiseco 3437X ring set delivers a precise 87.30mm fit for pistons that call for this bore size. This ring set works with compatible Wiseco piston applications to restore compression, reduce blow-by, and keep oil where it belongs. Riders, builders, and mechanics choose this ring set for top-end rebuilds where bore accuracy matters.

Built For Performance

• 87.30mm bore size for exact fitment in matched cylinders
• Multi-piece ring construction for sealing and oil control
• Built to hold compression under high-rpm operation
• Designed for use with compatible Wiseco piston assemblies
• Suited to performance and rebuild applications

On-The-Job Use

• Top-end rebuilds on compatible powersports engines
• Cylinder refresh when replacing a piston
• Performance builds requiring a matched bore and ring set
• Routine maintenance to restore lost compression

Specs At A Glance

Good To Know

Q: How do I know this ring set fits my engine? A: Match the 87.30mm bore size and the 3437X part number to your piston's requirements before ordering. Ring sets are bore-specific, so confirm the measurement rather than guessing.

Q: Should rings be installed with a new piston? A: Rings are commonly fitted when a piston is replaced or a cylinder is refreshed during a top-end rebuild. Check ring end gap during installation to confirm correct fitment.

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