2 Namura .040 Over Bore Piston Kits for Can-Am Defender HD8 2016-2021 92mm
2 Namura .040 Over Bore Piston Kits for Can-Am Defender HD8 2016-2021 92mm
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Namura .040 Over Bore Piston Kits for Can-Am Defender HD8
Set of two Namura .040 over bore piston kits (92mm) for the Can-Am Defender HD8 from 2016-2021, delivering a direct replacement for increased engine compression and reliability.
Overview
These Namura .040 over bore piston kits are built specifically for the Can-Am Defender HD8, providing the perfect solution for engine rebuilds when cylinders need resizing. Each kit contains a precision-machined piston, rings, wrist pin, and circlips, restoring lost power and extending engine life. The .040 oversize ensures a tight seal after boring the cylinder to 92mm.
Built For Performance
- Made from high-silicone aluminum alloy for lightweight strength and thermal stability
- Includes moly-coated ring set for reduced scuffing during break-in
- Oversized .040 (92mm) bore allows for cylinder reconditioning without replacement
- Complete kit with everything needed for one piston assembly installation
- Each piston is CNC-turned and finished to strict tolerances
Fits These Machines
- for Can-Am Defender HD8 (2016-2021)
- for Can-Am Defender HD8 DPS (2016-2021)
- for Can-Am Defender HD8 XT (2017-2021)
- for Can-Am Defender HD8 Lone Star (2017-2021)
On-The-Job Use
- Farm and utility work where engine downtime must be minimized
- Rebuilding a high-mileage Defender HD8 engine to restore top performance
- Repairing engine damage from overheating or fuel wash
- Upgrading during a top-end overhaul for improved reliability
Specs At A Glance
| Part Type | Piston Kit (Set of 2) |
| Brand | Namura |
| Bore Size | 92mm (.040 over stock) |
| Oversize | .040 inch |
| Quantity | 2 kits |
Good To Know
Q: Can I install these pistons without boring the cylinder? A: No, .040 over pistons require the cylinder to be bored and honed to 92mm by a qualified machine shop for correct piston-to-wall clearance.
Q: Do these kits include the wrist pin clips? A: Yes, each kit includes the wrist pin and circlips; however, it is recommended to also replace the connecting rod bearing for a complete rebuild.
Slight variation in finish or dimensions may occur between production runs, and fit can depend on serial number, so confirm compatibility before ordering.
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