Namura Standard Bore Top End Kit Size B for Can-Am Defender HD5 2017-2021 94mm

Standard Bore Top End Kit Size B for Can-Am

This aftermarket standard bore top end kit provides a 94mm piston and rings, designed to restore compression and performance in Can-Am Defender HD5 engines from 2017 to 2021; it includes the piston, rings, wrist pin, and circlips for a complete top end overhaul.

Overview

The Namura standard bore top end kit size B is a precision-engineered replacement for the original cylinder assembly in Can-Am Defender HD5 models. This top end kit delivers reliable performance and a precise fit with its 94mm bore. Whether rebuilding or replacing, this standard bore top end kit includes all necessary components for a smooth installation.

Built For Performance

• High-strength aluminum alloy piston resists thermal expansion
• Moly-coated skirt reduces friction and wear
• Precision-ground piston rings ensure consistent compression
• Heat-treated wrist pin for durability under load
• OEM-spec clearances for direct fitment

Fits These Machines

• for Can-Am Defender HD5 (2017-2021)

Specs At A Glance

Good To Know

Q: What is included in this top end kit? A: The kit includes a piston, piston rings, wrist pin, and circlips for a complete top end overhaul.

Q: How do I select the correct size letter? A: Measure your cylinder bore and choose the size letter (A, B, C, etc.) that matches your clearance specifications.

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