Premium 2017 Polaris RZR 900 Motor for Sale | Complete Engine Build

If you are looking for a high-performance 2017 Polaris RZR 900 motor with a complete build, you have found the ultimate solution to get your machine back on the dirt. This professional-grade engine features new main and rod bearings, new piston rings, valve seals, and gaskets, ensuring a fresh start for your RZR. We know the frustration of a blown engine mid-season; that is why this motor is precision-engineered to eliminate oil consumption and restore the snappy, high-revving throttle response you love.

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Key Benefits

• Restore Factory Compression: With new piston rings, your engine will start instantly and pull harder through the powerband.

• Ultimate Durability: New main and rod bearings eliminate crankshaft play, preventing catastrophic bottom-end failure.

• Leak-Free Performance: Professional-grade valve seals and gaskets ensure your garage floor stays clean and your oil levels stay full.

• Trail Ready: Skip the months of waiting for a shop to rebuild your old unit; this complete build is ready for immediate installation.

Key Features

• Full Professional Overhaul: Every critical wear component has been replaced with high-quality parts.

• High-Torque 875cc Design: Built specifically for the 2017 RZR 900 chassis and wiring harness.

• Precision Machined: Surfaces are decked and cylinders honed to provide the perfect seat for new components.

• Thermal Management: Optimized cooling passages ensure the motor runs cool even during aggressive summer riding.

Product Specifications

Component	Status
Engine Model	2017 Polaris RZR 900 ProStar
Bearings	New Main & Rod Bearings Installed
Top End	New Piston Rings & Valve Seals
Sealing	Complete New Gasket Set Throughout
Warranty	1-Year Warranty Included

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Precision Bearings for Peak Performance

 Superior Bottom-End Reliability

The heart of any 2017 Polaris RZR 900 motor is the crankshaft assembly. By installing new main and rod bearings, we address the #1 cause of engine failure in high-performance UTVs. You will hear the difference in the smooth, quiet idle and feel the confidence of a bottom end that can handle high-RPM jumps and deep mud without vibrating apart.

 Expert Cylinder and Head Refurbishment

Our complete build includes a meticulous top-end refresh. By using new piston rings and valve seals, we eliminate the “blue smoke” issues common in older RZR units. This process ensures that your oil stays where it belongs and your combustion chamber maintains maximum pressure, giving you that “new machine” feel every time you mash the pedal.

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Why Choose This Product?

Don’t gamble on a used “salvage” motor that might have hidden sand or heat damage. Our premium 2017 RZR 900 motor is a zero-hour rebuild that rivals the quality of a factory crate engine at a fraction of the cost. Every bolt is torqued to spec, and every seal is double-checked. Unlike a standard “top-end only” kit, this is a complete build from the oil pan to the valve cover, backed by a 1-year warranty.

How to Use

1. Preparation: Clean your RZR’s engine bay and inspect your radiator for debris.

2. Transfer: Move your intake manifold, fuel injectors, and stator to the new block.

3. Installation: Secure the motor mounts and reconnect the wiring harness.

4. Break-In: Fill with high-quality synthetic 5W-50 oil and follow a 10-hour gentle break-in cycle to seat the new piston rings perfectly.

Who It’s Ideal For

This engine is the “best” choice for RZR owners who have suffered a “dusted” motor or a spun bearing. If you demand premium reliability for racing, rock crawling, or high-speed desert runs, this rebuilt ProStar 900 is tailored for you.

What’s Included

• Complete 2017 RZR 900 Short Block/Long Block Assembly

• Installed New Main and Rod Bearings

• Installed New Piston Rings, Valve Seals, and Gaskets