Description

Polaris RZR 900 Engine Rebuild | 2011–2012

The Polaris RZR 900 Engine from REV6 is a precision remanufactured engine for 2011–2012 machines. We machine and replace critical components so the engine runs strong and installs easily. In addition, every unit is verified by a second master technician before shipping.

What Your Complete Engine Rebuild Includes

• Standard No-Fault 1-year warranty with an optional 2-year No-Fault Warranty upgrade.
• We restore and reuse as many OEM parts as possible. We inspect and refurbish all OEM parts to guarantee high quality internals that keep your machine running reliably.
• All components are cleaned, dismantled, inspected and repaired as needed.
• Cylinder head inspected, cleaned, sandblasted, decked, rebuilt, shimmed to manufacturer spec and undergoes a quality inspection.
• Exhaust valve guide replaced with manganese bronze valve guides for high RPM performance.
• Intake valve guides inspected and replaced as needed.
• Valves and valve seats recut/refaced to ensure tight seal, verified with vacuum test.
• Camshafts lobes and journals cleaned and polished, replaced as needed.
• Crankshaft is inspected and verified within OEM specs. 
• Crankshaft main bearings and rod bearing are replaced with new high-babbit coated bearings.
• Cylinders are inspected for wear and damage. Worn cylinders are replaced with refurbished and hone finished nikasil coated cylinders.
• Pistons replaced with moly coated pistons and rings.
• Timing chain and oil chain inspected for stretch and wear, replaced as needed.
• Refurbished oil pump assembly.
• Fully inspected and machined engine cases, tested for journal wear, cracks, holes, or excessive wear.
• All gaskets and seals replaced.
• Engine assembled and torqued to manufacturer specifications.

The rebuilt top end restores sealing and compression. Consequently, you’ll notice easier starts, a smoother idle, and stronger pull under load. Moreover, clean cases and tight clearances help oiling and cooling, which extends service life on trail and at work.

Install Notes & Support

• Verify model year and sub-model for correct fitment
• Prime the oil system and follow proper break-in for best results
• Reuse external accessories (unless you are replacing them) and torque to spec

Every REV6 engine ships nationwide and includes our 1-year warranty for peace of mind. If you have questions about fitment or break-in, our techs are ready to help.

Take Action

• Contact Us for fitment and lead time
• Warranty Policy for coverage details
• FAQ for install and shipping answers
• Engine Rebuild Kit Guide to compare related kits