CP Pistons 11.5:1 Piston Kit for 15–18 Polaris RZR XP900 – M9055

SKU: M9055. The CP Pistons high-performance piston kit is designed for 2015–2018 Polaris RZR XP900 engines that demand reliable strength and improved performance for trail, desert, or race use. This kit features an 11.5:1 compression ratio with a 93mm standard bore and 64.4mm stroke, maintaining a 999cc displacement while improving efficiency, throttle response, and durability over stock components. Precision-forged from premium aluminum alloy and CNC-machined to exact tolerances, these pistons provide excellent thermal stability, reduced friction, and dependable ring seal under demanding off-road conditions. Built to handle hard use, this CP Pistons kit delivers proven performance and long-term reliability.