OEM numbers: 0452954, 0451686. Processed with advanced CNC cutting technology to OE standards, ensuring precise alignment and a secure fit. Fitment: Replacement for Rzr 170 (2009-2013); Predator 90 (2004-2006); Sportsman 90 (2004-2014); Outlaw 90 (2007-2014); and similar 90cc models. Easy installation and chain guard: Easy to install and provides chain guidance while protecting the swingarm. Helps maintain proper chain tension for optimal performance and longer chain life. Heavy-duty construction: Made from high quality metal materials for maximum structural integrity. Die casting technique used to increase durability. Use scenarios: - Replacing a worn or loose chain tensioner on Rzr 170 (2009-2013) to restore accurate chain tension and prevent derailment. - Routine maintenance on Predator 90 (2004-2006) or Sportsman 90 (2004-2014) to protect the swingarm and ensure reliable chain guidance during aggressive riding. - Maintenance on Outlaw 90 (2007-2014) to extend chain life and improve durability during rough terrain sessions.