Description

Kawasaki Mule SX FI 4×4 XC LE FJ400 Engine 2019–2023

Restore your Kawasaki Mule SX FI 4×4 XC LE FJ400 with a professional rebuild from REV6. We use precision machining, high-grade components, and proven processes to ensure your engine delivers dependable performance. In addition, every build includes a 1-Year Warranty and free nationwide shipping, so you ride with confidence.

What’s Included in the Rebuild

• Thorough core inspection to identify wear before rebuilding.
• Crankshaft and rod evaluation to guarantee long-term reliability.
• Cylinder bore service – trued, straightened, and cross-hatched for a perfect seal.
• New piston and rings for restored compression and smoother operation.
• Fresh gasket kit and new oil seals to prevent leaks and keep the system tight.
• Valve guide seals replaced to control oil flow and extend durability.
• Full valve and head service – valves ground and lash set for maximum performance.

Core Requirement

A rebuildable core is required for this order. If you cannot provide one up front, a refundable core charge applies until your core is received and inspected. Once your core passes inspection, your rebuild moves forward quickly.

Why Choose REV6

We don’t just rebuild engines—we upgrade them. Each engine is hand-assembled by an expert technician and double-checked for accuracy. As a result, your Kawasaki Mule SX often runs stronger and more reliably than stock. For extra guidance, visit our FAQ or Help Center.

Take Action Today

Order your rebuild with confidence and get back to work without delay. Explore our Engine Rebuild Kit Guide or Contact Us if you need support before buying.

Thanks for trusting REV6 with your Mule SX engine rebuild. We take pride in building engines that work as hard as you do.