Motorcycle Accessories Cylinder Base Head Gasket Kit for 500 2X4 4X4 450 400 Big Boss Scrambler 425.This gasket kit is designed for use with motorcycle cylinder assemblies and provides heat insulation and sound attenuation.It offers sealing function compatible with , corrosion resistance, and low temperature resistance.The kit contains metal and paper materials and is intended for replacement use to restore fit and function.Compatible with 450 (2006–2007), 400 (2001–2011), 400 (2010–2013), 500 (1999–2012), Big Boss 500 (1998–1999), Scrambler 500 (1997–2003), ATP 500 (2004–2005), Worker 500 (1999–2001), 500 (1999–2003), Xplorer 500 (1997), Xpedition 425 (2000–2002), and other models listed in the title.