Namura Standard Bore Size B Piston Kit for Kawasaki STX15F, SX-R & Ultra LX 83mm
Namura Standard Bore Size B Piston Kit for Kawasaki STX15F, SX-R & Ultra LX 83mm
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Standard Bore Size B Piston Kit for Kawasaki
This Namura Standard Bore Size B Piston Kit is a high-performance replacement piston assembly designed for Kawasaki personal watercraft engines, offering reliable power and durability. It features an 83mm bore size and precision-machined construction for optimal combustion efficiency and long service life.
Overview
This Namura Standard Bore Size B Piston Kit is a drop-in piston assembly for Kawasaki STX15F, SX-R, and Ultra LX models, engineered to restore lost compression and improve throttle response. Featuring a 83mm bore, this piston kit is built for both recreational and competitive use, ensuring your Kawasaki runs at peak performance.
Built For Performance
- Precision-machined from high-strength aluminum alloy for reduced weight and heat dissipation
- Oversized piston ring grooves accommodate high-performance ring sets for better sealing
- Wrist pin and circlips included for a complete replacement assembly
- Plated skirt reduces friction and minimizes cylinder wall wear
- Balanced weight matching for smoother operation at high RPM
Fits These Machines
- for Kawasaki STX15F
- for Kawasaki SX-R
- for Kawasaki Ultra LX
On-The-Job Use
- Used in personal watercraft racing and recreational riding
- Ideal for engine rebuilds requiring a stock bore replacement
- Commonly installed during top-end overhauls to restore compression
- Suitable for both fresh water and salt water environments with proper maintenance
Specs At A Glance
| Bore Size | 83mm |
| Piston Grade | B (Standard Bore) |
| Application | Kawasaki STX15F, SX-R, Ultra LX |
| Includes | Piston, rings, wrist pin, circlips |
Good To Know
Q: Will this piston kit work with aftermarket cylinders? A: This kit is designed for standard bore size cylinders; if your cylinder has been bored oversize, you will need a corresponding oversized piston kit.
Q: How do I determine the correct piston grade? A: The grade letter (A, B, C, D) indicates the piston's diameter tolerance; measure your cylinder bore and select the matching grade for proper clearance.
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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