Motorcycle Cylinder Engine Seal Serow Tricker YBR250 Fit For Yamaha XT250 2013-2024 Serow 250 2008-2017 XG250 Tricker YBR250 motorcycle cylinder crankcase cover gasket kits direct bolt on assembly , fits engine mounting positions , no or secondary adjustments needed multi position sealing design , blocks oil seepage , keeps stable engine operating state in long distance riding density compression sheets , unified hot pressing craft , smooth flat contact faces for full coverage OEM matched outline hole spacing , consistent thickness to attach cylinder crankcase housings tightly