2 Namura .020 Over Bore Piston Kits for Can-Am Defender HD8 2016-2021 91.5mm

.020 Over Bore Piston Kits for Can-Am Defender HD8

These .020 over bore piston kits replace the factory pistons in Can-Am Defender HD8 engines to restore compression and performance after cylinder wear.

Overview

The .020 over bore piston kits for Can-Am Defender HD8 are designed to refresh worn cylinders by increasing bore size slightly. Each kit includes two pistons, rings, and pins for a complete rebuild. Suitable for riders needing to restore power and reliability in their Defender HD8.

Built For Performance

• Manufactured from high-strength aluminum alloy for durability
• Precision-machined to .020 oversize specification
• Includes moly-coated rings for reduced friction
• Matched weight sets ensure balanced engine operation
• Designed to withstand high RPM and heat

Fits These Machines

• for Can-Am Defender HD8 (2016-2021)

On-The-Job Use

• Commonly used during top-end engine rebuilds
• Suitable for trail riding, utility work, and recreational off-roading
• Ideal for restoring compression in high-mileage engines

Specs At A Glance

Good To Know

Q: Are the rings pre-gapped? A: Piston rings come pre-gapped, but final gap should always be checked and adjusted to cylinder specs during installation.

Q: Do I need to replace the wrist pins? A: Wrist pins are included in the kit, but we recommend reusing original clips unless new ones are provided.

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