Description
Kawasaki Ultra 310LX Engine Rebuild for 2014-2026 Models
A worn or damaged Ultra 310LX engine does not always mean starting over with an unknown replacement. REV6 rebuilds your original 2014-2026 Kawasaki Ultra 310LX engine core using an in-house process that covers the bottom end, cylinders, cylinder head, valve train, seals, and other key components.
Throughout the build, our technicians inspect parts to determine what can be reused and what needs attention. Then, before shipment, another technician checks the completed engine as part of our quality-control process.
How We Rebuild Your Ultra 310LX Engine
Crankshaft, Crankcase & Cylinder Service
- Full inspection of the engine core
- Crankcase assembly inspected
- Crankshaft assembly inspected and rebuilt
- New high-babbitt crankshaft bearings
- Cylinders bored and honed to the next oversize, re-sleeved, or Nikasil replated as needed
- New pistons, rings, and wrist pins
- Mating surfaces decked and resurfaced for proper sealing
Cylinder Head & Valve Train Work
- Cylinder head rebuilt
- Valve guides inspected and replaced as needed
- Valves and valve seats recut or refaced, then checked with a vacuum test
- Camshafts cleaned, inspected, and polished
- Timing chain checked for stretch and wear, then replaced as needed
Final Assembly & Inspection
- New gaskets and oil seals
- Bearings cleaned and inspected, then replaced as needed
- Engine assembled by an experienced REV6 technician
- Completed engine inspected before shipment
- A second technician checks the finished engine before it leaves REV6
Please note: This is a standard outline of our rebuild process. Since engine cores can vary in condition, the exact parts and work may differ based on what your Ultra 310LX engine needs.
Getting Your Ultra 310LX Engine Rebuilt
Order First, Then Send Your Core
Place your rebuild order to begin the process. Next, REV6 will follow up with instructions for sending your original Ultra 310LX engine core to our shop.
Return Shipping & Engine Break-In
After your engine is rebuilt and clears our final checks, we will provide tracking information for the return shipment. Once installed, follow the REV6 Engine Break-In Procedure Guide before returning your Jet Ski to regular use.
Fitment
2014-2026 Kawasaki Ultra 310LX Jet Ski
This engine rebuild is for Kawasaki Ultra 310LX Jet Ski models from 2014 through 2026. Please confirm your exact model and year before placing your order.
More Confidence in Your Engine Rebuild
No-Fault Warranty Options
Your Ultra 310LX rebuild comes standard with the REV6 1-year no-fault warranty. However, customers who want longer coverage can choose the optional 2-year no-fault, no-questions-asked warranty upgrade.
Financing for Your Ultra 310LX Rebuild
Instead of delaying a major engine repair, qualified buyers can explore REV6 financing options and choose the payment option that works best for them.
Ready to Send In Your 310LX Engine?
Place your rebuild order and watch for our follow-up with shipping instructions. If you need to confirm fitment or have questions about your engine core first, talk with the REV6 team.













