JE Pistons 379450 Ultra Series Piston Kit Polaris RZR XP 900

The JE Pistons 379450 Ultra Series Piston Kit is engineered specifically for 2011-2014 Polaris RZR XP 900 models, delivering maximum performance and durability for high-performance riding applications. This premium forged piston kit represents JE's top-tier powersports technology, designed to withstand the extreme demands of racing, off-road riding, and aggressive trail use.

Ultra Series Advanced Features:

• Aligned Grain Flow Technology: Proprietary in-house forging directs aluminum grain flow around critical stress areas for superior strength
• Lateral Gas Ports: Channels combustion gases behind the top ring groove to maintain consistent ring seal and improved performance
• Ultra-Thick Ring Lands: Enhanced ring land thickness maintains ring stability under high compression and extreme loads
• Thermal Barrier Crown Coating: Ceramic coating reduces heat transfer into piston material, decreasing thermal fatigue and extending service life
• Tuff Skirt Coating: Proprietary moly-based dry film coating applied in-house reduces operating friction and improves wear resistance
• Upgraded 9310 Wrist Pins: High-strength wrist pin material designed to handle extreme loads

Complete Kit Includes: Forged pistons, performance piston rings, wrist pins, and wire locks. All JE pistons are designed, forged, and CNC-machined in-house at their Huntington Beach, California facility, ensuring precision tolerances and consistent quality control.

JE Pistons has over seven decades of professional racing experience in NASCAR, NHRA, AMA Supercross, and other top-level motorsports. This proven technology translates directly into performance advantages for your RZR XP 900, delivering improved power, reliability, and durability for demanding powersports applications.