Features Stainless steel conversion Extend the lift of the valve train and intake components by as much as 4 times over the OEM titanium parts Designed to flow and perform better than OEM components Created using Finite Element Analysis (F.E.A.) software, as well as proprietary camshaft analysis and spring design software to ensure consistent performance and accurate designs Specifically designed and engineered for each application Made in the USA Specs Product Name Valve and Spring Kit Application Exhaust Material Stainless Steel Units Kit Riding Style ATV / Off-Road Fitments Position Notes 2012 Suzuki LT-Z400 QuadSport Z LE - - 2008 Suzuki LT-Z QuadSport 400Z SE 4x2 - - 2005-2024 Suzuki DR-Z400SM - - 2003-2014 Suzuki LT-Z400 QuadSport Z - - 2002-2011, 2013-2014 Suzuki LT-Z QuadSport 400 Z LE 4x2 - - 2000-2024 Suzuki DR-Z400S - - 2000-2016 Suzuki DR-Z400E - - 2000-2016 Suzuki DR-Z400 - - 2000-2002, 2015-2018 Suzuki LT-Z QuadSport 400 4x2 - -