2 Namura .020 Over Bore Piston Kits for Polaris 1000 Scrambler & Sportsman 91mm

Namura .020 Over Bore Piston Kits for Polaris 1000 Scrambler & Sportsman 91mm

This set of two Namura .020 over bore piston kits provides high-performance replacement pistons for Polaris 1000 Scrambler and Sportsman models with a 91mm bore, delivering increased displacement and reliable power for your ATV.

Overview

These Namura .020 over bore piston kits are designed to fit Polaris 1000 Scrambler and Sportsman engines with a 91mm bore, offering a reliable option for rebuilding or performance enhancement. Ideal for riders seeking dependable power from their Polaris 1000 ATV.

Built For Performance

• Manufactured from high-strength aluminum alloy for durability and heat resistance
• Precision-machined to .020 over bore (91mm) for increased displacement
• Includes premium piston rings for optimal sealing and reduced blow-by
• Lightweight design reduces reciprocating mass for quicker revving
• Each kit contains two full piston assemblies for complete cylinder replacement

Fits These Machines

• for Polaris Scrambler 1000
• for Polaris Sportsman 1000 (91mm bore)

On-The-Job Use

• Trail riding and recreational ATV use
• Engine rebuilds and top-end overhauls
• Racing and high-performance applications requiring increased displacement
• Utility work where reliable engine power is critical

Specs At A Glance

Good To Know

Q: Will these piston kits fit my Polaris 1000 model? A: These are designed for Polaris 1000 Scrambler and Sportsman with a 91mm bore; always verify your engine's bore size and model year before installation.

Q: Do I need to replace the piston rings as well? A: Yes, the included rings are matched to the pistons and should be installed to ensure proper compression and oil control.

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