Feature: 1. Applicable Models: Replacement for Polaris Rzr 170 2009 ‑ 2013; Replacement for Polaris Predator 90 2004 ‑ 2006; Replacement for Polaris Sportsman 90 2004 ‑ 2014; Replacement for Polaris Outlaw 90 2007 ‑ 2014, etc. 2. OEM Numbers: Replacing manufacturer part numbers are 0452954, 0451686. The chain tensioner is processed using advanced CNC cutting technology, guaranteeing OE standard. This ensures a precise and secure fit. 3. Sturdy Construction: The heavy duty chain tensioner is made from premium metal materials, ensuring maximum structural integrity. It is manufactured using advanced techniques such as die casting for enhanced durability. 4. Upgraded Tension Spring: Equipped with an upgraded torsion spring, this tensioner provides automatic tension adjustment to accommodate chain elongation. This ensures smooth rotation of the tensioner, resulting in a longer lifespan. 5. Easy Installation and Chain Protection: The tensioner is easy to install and helps protect the swing arm while providing proper chain guidance. This ensures optimal performance and extends the life of your chain. Specification: Item Type: Chain Tensioner Material: Metal Application: For replacement of OEM tensioners OEM: 0452954, 0451686 Tensioner Function: Automatically adjusts tension toward chain extension Applicable Models: Replacement for Polaris Rzr 170 2009 - 2013 Replacement for Polaris Predator 90 2004 - 2006 Replacement for Polaris Sportsman 90 2004 - 2014 Replacement for Polaris Sportsman 110 2016 - 2018 Replacement for Polaris Outlaw 90 2007 - 2014 Replacement for Polaris Outlaw 110 2016 - 2018. Package List: 1 x Chain Tensioner1 x Spring Hook Note: Please double check the part number of your item, matching information is for reference only.