Description

Master Top End Rebuild Parts for Polaris Ranger and ACE 900/1000 Engines

The Polaris 2017-2024 Ranger/ACE 900/1000 Master Top End Rebuild Kit includes the major components needed to rebuild the top end of your engine. With a new cylinder, upgraded moly pistons, new intake and exhaust valves, and a complete top end gasket set, this kit helps restore compression, performance, and long-term reliability.

If your engine has excessive oil consumption, low compression, cylinder damage, or worn valves, replacing these components together helps simplify the rebuild. In addition, the matched components are designed to work together for a dependable installation.

This Kit Includes

• New Cylinder
• Top End Gasket Set
• (2) Moly Upgraded Pistons
• (4) Intake Valves
• (4) Exhaust Valves

Why Choose the Master Top End Rebuild Kit?

This Master Top End Rebuild Kit is the most complete top-end package available for these Polaris engines. Unlike standard top-end kits, it includes a brand-new cylinder along with both intake and exhaust valves. As a result, you can replace the major wear components in one rebuild without sourcing additional parts.

Before installation, inspect the crankshaft, connecting rods, and bottom-end bearings to ensure they remain within factory specifications. Doing so helps protect your new top-end components and promotes long service life.

Related Polaris Ranger & ACE Parts

• Shop Polaris Ranger Parts
• Shop Polaris ACE Parts
• Browse Additional Polaris Engine Rebuild Kits
• REV6 Warranty Policy
• Contact REV6

Warranty & Technical Support

Every REV6 Master Top End Rebuild Kit includes a 1-year warranty for added confidence. Review our Warranty Policy for complete coverage details and warranty guidelines.

If you need help confirming fitment or selecting the correct rebuild kit for your Ranger or ACE, contact the REV6 team. Our technicians are happy to answer your questions before you begin your rebuild.

Get your Polaris Ranger or ACE back to work with quality replacement engine components trusted by riders, shops, and dealers nationwide.