Description

Rebuild Your 2021-2022 Kawasaki Ultra LX with a +.50mm Master Engine Kit

When your engine requires +.50mm oversize pistons, you’ve already reached the point where a thorough rebuild makes sense. This master engine rebuild kit is designed for 2021-2022 Kawasaki Ultra LX Jet Ski models and combines the major engine components commonly replaced during a complete overhaul.

The +.50mm designation applies to the piston kits only. Rather than sourcing parts from multiple suppliers, you can complete your rebuild with one coordinated kit. In addition, replacing the major wear components during one teardown helps reduce repeat labor and keeps your project moving forward.

What This Kit Includes

• Crankshaft
• Connecting Rods
• Piston Kits +.50mm
• Complete Gasket Kit
• Oil Pump Chain
• Intake/Exhaust Valves
• Cam Chain
• Crankshaft Ball Bearing
• Crankshaft Outer Bearings
• Crankshaft Bearing Inner Bearings
• Crankshaft Main Bearing
• Connecting Rod Bearings

Why Builders Select This Kit

If your cylinders have been machined to accept +.50mm pistons, now is the ideal time to replace the engine’s primary wear components. Completing everything during one rebuild helps maximize reliability and minimizes the chance of opening the engine again for missed components.

• Install +.50mm piston kits after confirming final cylinder dimensions.
• Replace the crankshaft and connecting rods during the same rebuild.
• Refresh the cylinder head with new intake and exhaust valves.
• Install new timing components before final assembly.
• Complete the overhaul with new bearings and sealing components.

Compare Ultra LX Engine Rebuild Options

If your cylinders remain within standard bore specifications, compare the Ultra LX Master Engine Rebuild Kit (STD).

If your cylinders clean up with the first oversize, review the Ultra LX Master Engine Rebuild Kit +.25mm.

If your existing valves remain within service limits, the Ultra LX Complete Engine Rebuild Kit +.50mm may better match your rebuild.

Need help deciding which rebuild level fits your engine? Review our Engine Rebuild Kit Guide.

Ready to Complete Your Rebuild?

Every REV6 engine rebuild kit includes a 1-year warranty and ships nationwide. Review our Warranty Policy. Financing options are available through REV6 Financing. If you have questions about piston sizing or rebuild planning, Contact REV6. Our experienced team is ready to help you choose the right kit.