Fitments Years Make Model 2007 - 2016 Suzuki RM-Z 250 FeaturesStainless steel conversion kit includes only what's needed to convert your head to the long-life stainless steel Black Diamond intake valvesExtends the life of the valvetrain and intake components by as much as 4x over the OEM titanium partsIncludes forged one-piece stainless steel intake valves, wound chrome-silicon heat-treated wire valve springs, ultra-light titanium retainers and hardened steel basesComponents are created using Finite Element Analysis (F.E.A.) software, as well as proprietary camshaft analysis and spring design softwareSpecifically designed and engineered for each applicationMade in the U.S.A.Specs Application: Intake Spring Lift: 0,445" Type: Conversion Material: Stainless Steel Spring Lift: 0.445" Product Name: Valve Kit Riding Style: Off-Road Spring Open Pressure: 160 lb Units: Kit Spring Seat Pressure: 51 lbApproximate Package Weight & Dimensions Weight: 0.4 Height: 1.2 Length: 8.4 Width: 5.11