Namura .040 Over Bore Piston Kit fits Kawasaki KDX50 2003 2004 2005 2006 42mm
Namura .040 Over Bore Piston Kit fits Kawasaki KDX50 2003 2004 2005 2006 42mm
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.040 Over Bore Piston Kit for Kawasaki KDX50
This Namura .040 over bore piston kit is engineered for Kawasaki KDX50 models from 2003 to 2006, with a 42mm bore size.
Overview
This .040 over bore piston kit from Namura provides a 42mm piston for Kawasaki KDX50 2003-2006 engines, allowing oversize rebuilding of worn cylinders. The kit includes piston, rings, and pin for a complete top-end refresh.
Built For Performance
- Oversized .040 for removing cylinder taper and wear
- High-silicon aluminum alloy for thermal stability
- Precision-machined ring grooves for secure ring fit
- Includes wrist pin and circlips for full installation
Fits These Machines
- for Kawasaki KDX50 (2003-2006)
On-The-Job Use
- Top-end engine rebuilds for youth dirt bikes
- Trail riding and motocross practice
- Restoring compression and power in worn engines
Specs At A Glance
| Bore Size | 42mm |
| Overbore | .040 inch |
| Kit Includes | Piston, rings, pin, circlips |
Good To Know
Q: Is a new cylinder needed for this overbore kit? A: This kit fits a cylinder bored to .040 oversize; your existing cylinder must be machined to 42mm for proper fit.
Q: What ring end gap should I set? A: Follow the manufacturer's spec, typically around 0.15-0.20mm, but always measure and adjust.
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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