Description
Kawasaki Ultra 310X Engine Rebuild by REV6
Send your 2022-2026 Kawasaki Ultra 310X engine core to REV6 for a full in-house rebuild. We inspect the engine first, then rebuild key areas based on the condition of your core. This process covers the crankshaft, cylinders, pistons, cylinder head, valve train, bearings, seals, and timing components.
Before your engine ships, a second technician checks the completed build. Additionally, your rebuild includes a standard 1-year no-fault warranty, with an optional 2-year no-fault warranty upgrade available.
Inside Your Ultra 310X Engine Rebuild
Crankshaft, Crankcase & Cylinder Work
- 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
- 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 & Quality Checks
- 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
- Second technician checks the finished build for added quality control
Please note: This is our standard rebuild outline. However, the condition of each engine core can differ. Therefore, the exact parts and work may vary based on what your Ultra 310X engine needs.
How to Get Your Ultra 310X Rebuild Started
Order & Core Shipping
Place your rebuild order first. Next, the REV6 team will follow up with instructions for sending your original Ultra 310X engine core to our shop.
Return Shipping & Break-In
Once your engine clears its final checks, we prepare it for return shipment and provide tracking information. After installation, review the REV6 Engine Break-In Procedure Guide before returning your Jet Ski to normal use.
Fitment
2022-2026 Kawasaki Ultra 310X Jet Ski
Fits Kawasaki Ultra 310X Jet Ski models from 2022 through 2026. Please confirm your model and year before ordering.
Warranty, Financing & Next Steps
No-Fault Warranty Coverage
Every Ultra 310X rebuild includes the REV6 1-year no-fault warranty. For longer coverage, you can upgrade to the optional 2-year no-fault, no-questions-asked warranty.
Financing Available
Financing gives qualified buyers another way to plan for a major engine repair. View REV6 financing options before placing your order.
Send In Your Ultra 310X Core
Ready to move forward? Place your order and we’ll follow up with the shipping instructions for your engine core. Otherwise, contact the REV6 team first for help with fitment, core requirements, or warranty options.












