fits model: M5, 440, Trail, Mark. make: Polaris.

( Manufacturer Part Number: 3083880 ), ( Part Type: Piston ), ( Country/region Of Manufacture: Japan )
Product Description: Polaris Ec442pm Piston Kit for the Polaris RZR RS1, RS1 XC, XP 1000, and RZR X2 570 Trail 440 SPORT
The Polaris Ec442pm Piston Kit is a premium replacement option for the original pistons on Polaris RZR models, including the RZR RS1, RS1 XC, XP 1000, and RZR X2 570 SPORT. This piston kit is specifically designed to provide enhanced performance, durability, and reliability for off-road enthusiasts looking to get the most out of their Polaris vehicle.
The Ec442pm pistons are manufactured using state-of-the-art technology and high-quality materials. The piston skirts are constructed from forged aluminum, ensuring maximum strength and durability in the demanding conditions of off-road riding. The piston crowns are made from a machined alloy material, providing the proper thermal expansion characteristics for the engine.
One of the defining features of the Ec442pm piston kit is its increased compression ratio. With a compression ratio of 13.5:1, these pistons provide improved engine efficiency and power output. This is achieved by reducing piston travel, which allows the engine to compress fuel-air mixtures more effectively, resulting in increased horsepower and torque.
Another benefit of the Ec442pm piston kit is its reduced weight. Each piston weighs only 2.9 pounds, which is a significant reduction compared to the original Polaris pistons, weighing approximately 3.3 pounds. This reduction in weight leads to improved acceleration and overall vehicle performance, as well as reducing the wear and tear on other engine components.
The Ec442pm piston kit also includes ring packs for the pistons. These ring packs feature a dual-gap design, which optimizes the sealing surface and reduces the chance of detonation within the engine. Additionally, the rings are nitrided for extra strength and poly-coated for reduced friction, ensuring smooth operation and longevity.
Installing the Ec442pm piston kit is a straightforward process. The kit includes piston pins, piston pin bushings, and other necessary hardware for a complete installation. However, it is recommended that the installation be performed by a professional to ensure proper assembly and optimal performance.
When buying the Ec442pm piston kit, you can trust in the quality and expertise of Polaris Engineered Components. This piston kit is designed, engineered, and manufactured in the United States, using the latest in engineering technology and techniques. The resulting product is a top-performing, long-lasting piston kit that is sure to exceed your expectations in terms of durability, power, and reliability.
In conclusion, the Polaris Ec442pm Piston Kit is an excellent choice for those seeking improved performance and reliability from their Polaris RZR. With its forged aluminum piston skirts, high-performance materials, and increased compression ratio, this kit is sure to help your RZR achieve new levels of power and enhance your off-road experiences.
The Polaris RZR Rasoft M5 Trail 440 Chassis Kit, part number 3083880, is a popular upgrade option for Polaris RZR R4 and RZR 1000 model year 2014 and later vehicles. This kit provides several benefits and drawbacks that potential buyers should consider before making a purchase.
Pros:1. Improved suspension performance: The Rasoft M5 Trail 440 kit features high-performance FOX shocks that offer better damping control, adjustability, and superior ride quality compared to the stock suspension.
2. Increased ground clearance: The kit comes with longer travel suspension arms and an adjustable front A-arm, which results in a higher ground clearance, allowing for better off-road performance and reducing the chances of bottoming out in rough terrains.
3. Enhanced handling: The upgraded suspension components provide improved handling and stability, enabling drivers to maneuver their RZR more effectively through various off-road conditions.
4. Customizable adjustability: The FOX shocks offer various tuning adjustments such as compression, rebound, and spring preload, allowing users to tailor the suspension to their unique driving preferences and terrain conditions.
5. Durability: The Rasoft M5 Trail 440 kit uses higher-quality materials and robust components compared to the stock parts, making it more durable and durable for off-road riding.
Cons:1. Cost: The Polaris Rasoft M5 Trail 440 kit is a premium upgrade and comes with a relatively high price tag compared to stock suspension kits or other aftermarket options.
2. Installation complexity: Installing the Rasoft M5 Trail 440 kit may require professional assistance or extensive mechanical knowledge, increasing the overall cost and time investment for the user.
3. No factory warranty: Since the kit is an aftermarket upgrade, any modifications or issues that arise from the installation might not be covered under a factory warranty.
Conclusion:The Polaris Rasoft M5 Trail 440 kit offers several desirable upgrades for off-road enthusiasts seeking enhanced performance, improved handling, and increased durability for their RZR. However, its premium price tag and installation complexity are essential considerations that potential buyers should weigh against the benefits gained. For those who value riding in extreme off-road conditions and are willing to invest in the time and cost of the installation, the Rasoft M5 Trail 440 kit can provide a significant improvement to their UTV experience. Ultimately, the decision to purchase this upgraded kit hinges on individual preferences and priorities.
These pistons are new and in perfect condition. There is some questionable information written on the boxes but piston crown Marked M5 pistons are standard bore, not oversize.
They appear to use the round profile cir clips not spiral type, and rings grooves are for a keystone tapered ring style. I am not sure but aftermarket pistons list these model's with P/N The price reflect it as these pistons are quality oem not often questionable aftermarket.
Sorry about the sketchy information.