Description
Complete +.50mm Engine Rebuild Kit for Kawasaki Ultra LX Jet Skis
When your engine requires +.50mm oversize pistons, you’ve already invested in proper inspection and machine work. This complete engine rebuild kit is built for 2007-2011 Kawasaki Ultra LX Jet Ski models and gives you the major components needed to put the engine back together with confidence.
The +.50mm sizing applies to the piston kits only. If your existing valves are still within factory service limits, this kit allows you to rebuild the rotating assembly without purchasing valve components you don’t need.
What This Kit Includes
- Crankshaft
- Connecting Rods
- Piston Kits +.50mm
- Complete Gasket Kit
- Oil Pump Chain
- Cam Chain
- Crankshaft Ball Bearing
- Crankshaft Outer Bearings
- Crankshaft Bearing Inner Bearings
- Crankshaft Main Bearing
- Connecting Rod Bearings
Built for Engines Requiring +.50mm Pistons
After the cylinders have been machined to the correct oversize, replacing the remaining wear components during the same teardown helps avoid repeat labor. This kit gives you the flexibility to reuse serviceable valves while replacing the parts that typically wear throughout the bottom end and rotating assembly.
- Install +.50mm piston kits after final cylinder measurements.
- Replace the crankshaft and connecting rods during one rebuild.
- Renew bearings before final engine assembly.
- Replace the cam chain and oil pump chain while the engine is apart.
- Complete reassembly with a new gasket kit.
Compare Ultra LX Rebuild Kits
If your cylinders remain at standard bore, compare the Ultra LX Complete Engine Rebuild Kit (STD).
If your engine only requires the first oversize, review the Ultra LX Complete Engine Rebuild Kit +.25mm.
If your cylinder head also needs new valves, upgrade to the Ultra LX Master Engine Rebuild Kit +.50mm.
Not sure which rebuild kit fits your project? Read our Engine Rebuild Kit Guide for a side-by-side comparison.
Rebuild with Confidence
Every REV6 engine rebuild kit includes a 1-year warranty and ships nationwide from our Utah facility. Review our Warranty Policy. Financing is available through REV6 Financing. If you need help selecting the correct rebuild kit, Contact REV6. Our experienced team is ready to help.













