Description
The ProX Piston Kit for Kawasaki 750 1100ZXI 1.50 represents one of the larger common oversizes used when cylinders have experienced significant wear, scoring, or previous machining. This 1.50 mm over piston allows an experienced machine shop to clean up more severe damage while still keeping the engine within practical service limits. For riders who want to rescue an older hull and give it robust new life on the water, this kit can be a key part of the rebuild plan.
- Large oversize piston kit includes 1.50 mm over piston, ring kit, wrist pin, and circlips for a thorough top end overhaul.
- Manufactured from a proven low expansion, low friction alloy for dependable operation through repeated heat cycles and varied riding conditions.
- Precision CNC machining yields a consistent skirt profile, ring groove quality, and crown finish that support good sealing and combustion.
- Designed to run at appropriate clearances when installed in a properly bored and honed cylinder at the specified oversize.
- Suitable for Kawasaki 750 and 1100ZXI engines that require a larger final overbore to remove deep wear or scoring.
Moving to a 1.50 mm oversize typically signals a more serious rebuild, so it is wise to inspect the entire engine carefully. Check crankshaft runout, rod big ends, small ends, bearings, and seals to ensure the refreshed top end will not be compromised by bottom end issues. The ProX piston and ring combination is designed to work as part of a balanced system, offering reliability when the rest of the engine is in sound condition.
As with any overbore, verifying ring end gaps, bore size, and piston to wall clearance is essential. Use the correct honing pattern, cleaning process, and assembly lube, and follow a conservative break in schedule. When installed and maintained correctly, this ProX 1.50 mm oversize kit can keep a well loved Kawasaki 750 1100ZXI running strong, offering crisp performance and many more hours of fun on lakes and rivers.






