Description

Engine Rebuild Kit +.50mm for 2021-2022 Kawasaki Ultra LX Jet Skis

When your cylinders have been machined for +.50mm oversize pistons, choosing the correct rebuild kit helps you finish the job with confidence. Designed for 2021-2022 Kawasaki Ultra LX Jet Ski models, this engine rebuild kit focuses on the wear components most commonly replaced while allowing you to reuse serviceable crankshaft, connecting rods, and valve components.

The +.50mm designation applies only to the piston kits. If your inspection confirms the remaining hard parts are still within factory service specifications, this kit provides an efficient and cost-effective path to completing your rebuild.

What This Kit Includes

• 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 with Reusable Hard Parts

If your crankshaft, connecting rods, and valves remain within specification, replacing only the normal wear components is often the most practical approach. This kit helps you complete the rebuild without paying for components that don’t need replacement.

• Install +.50mm piston kits after confirming final cylinder dimensions.
• Replace crankshaft bearings before engine assembly.
• Renew the oil pump chain and cam chain while access is available.
• Install a new complete gasket kit during reassembly.
• Reuse serviceable crankshaft, rods, and valve components after inspection.

Compare Ultra LX Engine Rebuild Options

If your engine requires a replacement crankshaft and connecting rods, compare the Ultra LX Complete Engine Rebuild Kit +.50mm.

If your cylinder head also needs new intake and exhaust valves, upgrade to the Ultra LX Master Engine Rebuild Kit +.50mm.

If your cylinders only require the first oversize, review the Ultra LX Engine Rebuild Kit +.25mm.

Need help choosing the right rebuild level? Review our Engine Rebuild Kit Guide.

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 have questions before ordering, Contact REV6. Our experienced team is ready to help you select the right rebuild kit.