Description

Everything Needed to Rebuild Your Polaris RZR 900 Engine

If you’re rebuilding a worn or damaged 2017-2024 Polaris RZR 900 engine, this Master Engine Rebuild Kit provides nearly everything needed to complete the job with confidence. From the new cylinder and HD twin crankshaft to forged connecting rods, upgraded moly pistons, bearings, gaskets, and a complete valve set, this kit helps eliminate the guesswork of sourcing parts individually.

Whether you’re repairing a failed engine or completing a preventative rebuild, this kit combines premium components trusted by professional engine builders and experienced DIY mechanics alike.

What This Kit Includes

• New Cylinder
• Oil Seal Set
• Timing Chain
• Oil Pump Chain
• HD Twin Crankshaft
• Balance Shaft Bearings
• Forged Connecting Rods
• Complete Gasket Kit
• Complete Bearing Kit
• (2) Moly Upgraded Pistons
• (4) Intake Valves
• (4) Exhaust Valves

Important: Send us your engine block numbers when ordering so we can identify and mark your correct bearing specifications for a smoother installation.

Built for Complete Engine Overhauls

This master kit is designed for builders who want to replace nearly every major wear component during one teardown. Installing matched components helps improve reliability, reduces downtime, and minimizes the risk of mixing incompatible parts during assembly.

• New cylinder ready for final preparation and assembly.
• Heavy-duty twin crankshaft with forged connecting rods.
• Moly upgraded pistons for dependable performance.
• Complete intake and exhaust valve replacement.
• Complete gasket, seal, and bearing coverage.

Compare Your RZR 900 Rebuild Options

If your existing cylinder can be reused, compare the RZR 900 Complete Engine Rebuild Kit.

If your crankshaft is still serviceable, the RZR 900 Engine Rebuild Kit may be a better fit.

Need a rebuilt cylinder head instead? Browse our RZR 900 Cylinder Heads & Valves.

Looking for additional replacement parts? Shop the complete 2017-2024 Polaris RZR 900 Parts Catalog.

Why Buy Your Engine Parts from REV6?

REV6 has been helping riders, dealerships, and repair shops rebuild powersports engines for decades. Every rebuild kit is backed by a 1-year warranty and ships nationwide from our Utah facility. We also offer financing for qualifying purchases, and our technical support team is available before and after your order.

Review our Warranty Policy, explore REV6 Financing, or Contact REV6 if you’d like help choosing the right kit for your rebuild.