Namura Big Bore Piston Rings for Honda TRX400EX & TRX400X Sportrax 89mm

Namura Big Bore Piston Rings for Honda

These Namura big bore piston rings are designed for Honda TRX400EX and TRX400X Sportrax models with an 89mm bore size to restore compression and power.

Overview

The Namura Big Bore Piston Rings for Honda are high-performance rings intended for the TRX400EX and TRX400X Sportrax ATVs. They provide a precise seal between piston and cylinder wall, increasing compression and reducing blow-by. These rings are an essential component for engine rebuilds or big bore upgrades.

Built For Performance

• Manufactured from high-strength steel for durability
• Precision-ground to exact 89mm bore size
• Provides excellent oil control and compression sealing
• Designed for use with Namura big bore pistons
• Reduces friction for improved engine efficiency

Fits These Machines

• for Honda TRX400EX Sportrax
• for Honda TRX400X Sportrax

On-The-Job Use

• Rebuilding a top end on a Honda TRX400 engine
• Upgrading to a big bore piston for increased displacement
• Replacing worn rings to restore lost compression
• Racing or recreational off-road riding

Specs At A Glance

Good To Know

Q: Do these rings require any special installation tools? A: A standard ring expander is recommended to avoid damaging the rings during installation.

Q: Are these rings compatible with stock Honda pistons? A: They are designed for Namura big bore pistons; using with stock pistons may not be recommended.

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