2 Namura .040 Over Bore Pistons & Top Gasket Kit Scrambler 1000 Sportsman 91.5mm

2 .040 Over Bore Pistons & Top Gasket Kit for Namura

This set includes two .040 over bore pistons and a top gasket kit for Polaris Scrambler 1000 and Sportsman models, providing a performance enhancement or replacement for worn engines requiring oversized pistons.

Overview

These .040 over bore pistons and top gasket kit for Namura are designed to restore or increase engine displacement in Polaris Scrambler 1000 and Sportsman machines. The 91.5mm bore size allows for a precise fit after cylinder boring, making them ideal for engines that have been honed or rebored. This comprehensive kit includes pistons, rings, and gaskets for a complete top-end rebuild.

Built For Performance

• Oversized .040 over bore pistons for increased displacement and compression
• Precision-machined from Namura's aftermarket manufacturing process
• Includes high-quality piston rings for optimal sealing
• Complete top gasket kit with head gasket, base gasket, and seals
• 91.5mm bore size requires cylinder boring to specification

Fits These Machines

• for Polaris Scrambler 1000
• for Polaris Sportsman 1000

On-The-Job Use

• Used for rebuilding engines that have been bored to .040 over size
• Common in high-performance ATV and UTV applications
• Suitable for restoring compression in worn-out cylinders

Specs At A Glance

Good To Know

Q: Do I need to bore my cylinders to use these pistons? A: Yes, these .040 over pistons require the cylinder to be bored to 91.5mm. Always have a machine shop check fitment.

Q: Are these pistons compatible with the Polaris Scrambler 1000? A: They are designed for Polaris Scrambler 1000 models with the appropriate engine, but verify your engine serial number for correct clearance.

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