Description

Complete Top End Rebuild Kit for Can-Am Maverick X3 1000

The Can-Am Maverick X3 Complete Top End Rebuild Kit is designed for 2017-2023 engines that require new pistons and top-end sealing components while retaining reusable valves and a serviceable bottom end. It brings together the essential parts needed to complete a top-end rebuild without replacing components that remain within manufacturer specifications.

Install the new piston kits, replace the head gasket and sealing components, and renew the valve guide seals while the cylinder heads are removed. Completing these repairs together helps restore compression and sealing while reducing the need for future disassembly.

Before You Begin Your Rebuild

Inspect the Valve Train

Before ordering, inspect the intake and exhaust valves for wear, pitting, or burning. If the valves also require replacement, consider upgrading to the Can-Am Maverick X3 Master Top End Rebuild Kit, which includes new intake and exhaust valves.

What This Kit Includes

Piston Components

• (3) Piston Kits — REPLACES OEM#: 420893970

Cylinder Head & Sealing Components

• (12) Valve Guide Seals — REPLACES OEM#: 420431671
• (1) Cam V Ring — REPLACES OEM#: 420630127
• (6) Cam Housing Rings — REPLACES OEM#: 420431760
• (1) Head Gasket — REPLACES OEM#: 420431816
• (1) Exhaust Gasket — REPLACES OEM#: 420431850
• (1) Cam Chain Tensioner Gasket — REPLACES OEM#: 420430623

Common Signs You May Need a Top End Rebuild

• Low engine compression
• Damaged or worn piston assemblies
• Cylinder head removed for repairs
• Head gasket failure
• Oil consumption caused by piston ring wear

Fitment

2017-2023 Can-Am Maverick X3 1000

This Complete Top End Rebuild Kit fits 2017-2023 Can-Am Maverick X3 1000 models. Verify your model and inspect reusable engine components before ordering.

Helpful Resources

Plan Your Top End Rebuild

Review our Can-Am Maverick X3 Engine Rebuild Guide for inspection tips, engine measurements, and rebuild planning.

Compare Can-Am X3 Rebuild Kits

If you’re deciding between the Complete and Master Top End Rebuild Kits, our Can-Am X3 Engine Rebuild Kit Guide explains the differences between the available rebuild options.

Looking for More Performance?

After your rebuild is complete, supported models can benefit from the Can-Am ECU / ECM Tune Kit for improved throttle response and additional horsepower.

Warranty, Financing & Support

REV6 Parts Warranty

This Complete Top End Rebuild Kit is backed by the REV6 1-year parts warranty.

Financing Available

Qualified buyers can explore REV6 financing options for larger rebuild projects.

Need Help Selecting the Right Kit?

If you have questions about fitment or whether your existing valves can be reused, contact the REV6 team. We’ll help you choose the rebuild kit that best fits your engine.