Namura Standard Bore Piston Kit for Polaris Trail Blazer 250 fits 1990-2006 72mm

Namura Standard Bore Piston Kit for Polaris Trail Blazer 250 fits 1990-2006 72mm

This Namura standard bore piston kit is a direct replacement piston assembly for Polaris Trail Blazer 250 models from 1990 to 2006, featuring a 72mm bore diameter to restore factory‑spec compression and performance.

Overview

The Namura standard bore piston kit for Polaris Trail Blazer 250 delivers a precision‑machined piston with rings and pin, engineered to match the original 72mm bore dimensions for 1990‑2006 Trail Blazer 250 engines. This standard bore piston kit is the ideal choice when your cylinder is still within factory specifications, providing reliable power and durability for your Polaris ATV.

Built For Performance

• Precision‑cast piston for consistent expansion and heat transfer
• Includes piston rings, wrist pin, and circlips for a complete top‑end rebuild
• Standard 72mm bore matches factory specifications
• Matching skirt profile reduces piston slap and noise
• Designed to meet or exceed OEM specifications for Polaris engines

Fits These Machines

• for Polaris Trail Blazer 250 (1990-2006)

On-The-Job Use

• Trail riding and recreational off‑roading
• Utility and farm use requiring reliable engine performance
• Restoration of vintage Polaris Trail Blazer 250 quads
• Top‑end rebuild during routine engine maintenance

Specs At A Glance

Good To Know

Q: Will this kit fit my Polaris Trail Blazer 250 if the cylinder has been previously bored? A: This standard bore kit is designed for cylinders that are still at the factory 72mm bore size; it will not fit a cylinder that has been overbored. Measure your cylinder bore before purchasing.

Q: Do I need any additional parts to complete the installation? A: You will need a new head gasket, base gasket, and piston pin bearing. We recommend also replacing the cylinder if there is visible wear or scoring.

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