Namura Standard Bore Top End Kit for Sea-Doo 1500 4-TEC non-SC 2002-2019 100mm
Namura Standard Bore Top End Kit for Sea-Doo 1500 4-TEC non-SC 2002-2019 100mm
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Top End Kit for Sea-Doo 1500 4-TEC non-SC Standard Bore 100mm
This top end kit supplies a standard bore piston and ring set for Sea-Doo 1500 4-TEC non-supercharged engines from 2002 through 2019, measuring 100mm to match an untreated cylinder. It includes a piston, rings, wrist pin, and circlips for a complete top-end rebuild on select Sea-Doo 1500 models.
Overview
This standard bore top end kit is a direct replacement for Sea-Doo 1500 4-TEC non-supercharged engines, using a 100mm piston for cylinders that have not been overbored. It is designed for restoring worn top ends on Sea-Doo watercraft from 2002 to 2019, bringing back lost compression and smooth operation.
Built For Performance
- Cast piston construction for reliable daily duty
- Precision-fit wrist pin and circlips for secure installation
- Compatible with non-supercharged 4-TEC engines only
- Includes complete ring set for proper compression and oil control
- Engineered to match OEM clearances for a stock cylinder bore
Fits These Machines
- for Sea-Doo GTX 155 (2002-2005)
- for Sea-Doo GTX 215 (2006-2009)
- for Sea-Doo RXP 155 (2003-2005)
- for Sea-Doo RXP 215 (2006-2009)
- for Sea-Doo RXT 155 (2003-2005)
- for Sea-Doo RXT 215 (2006-2009)
On-The-Job Use
- Replacing a worn top end on a high-hour Sea-Doo 4-TEC engine
- Rebuilding an engine after a piston seizure or scoring
- Restoring compression for stronger acceleration and top speed
- Performing a mid-life engine refresh for personal watercraft
Specs At A Glance
| Piston Size | Standard Bore (100mm) |
| Application | Sea-Doo 1500 4-TEC non-SC (2002-2019) |
| Components Included | Piston, Rings, Wrist Pin, Circlips |
Good To Know
Q: Will this kit work if my cylinder has been previously bored? A: No, this standard bore piston is only for cylinders that remain at the original 100mm bore; if the cylinder has been overbored you need a corresponding oversize piston.
Q: Is this kit suitable for a supercharged Sea-Doo 4-TEC? A: No, this top end kit is designed exclusively for non-supercharged (non-SC) engines; supercharged models require different piston specifications and compression ratios.
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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