Specs: Exhaust Gasket Kit, Notes: Two stroke kit includes O-rings, springs, washer, and gasket. Where applicable. KTM four stroke kits include header gasket and replacement springs. Four stroke kits contains header gasket. Kits for multi cylinder vehicles contain multiple gaskets. Polaris kits include header gaskets on both sides of short header pipe and springs. Where applicable. Compatible With/Replacement For: Polaris ACE 900 EFI EPS 2016, ACE 900 EPS XC 2017-2018, General 1000 EPS 2016-2018, General 4 1000 EPS 2017-2018, Ranger 1000 EPS BASE 2018, Ranger 900 Crew 2014-2017, Ranger 900 XP 2013-2018, Ranger 900 XP EU 2015-2016, RZR 1000 60 INCH 2016-2018, RZR 4 900 2015-2018, RZR 900 50 55 INCH 2015-2017, RZR 900 50 INCH 2018, RZR 900 50 INCH EPS 2018, RZR 900 50 INCH MD 2017, RZR 900 60 INCH 2016-2018, RZR 900 60 INCH Built After 3/2/15 2015 1-year warranty protects you after your purchase. We’re confident that our products will work flawlessly once installed in your vehicle