Honda Trx 400 Ex Clutch Cover Gasket Trx400 Trx 400ex Clutch cover gasket made from high quality materials to meet or exceed OEM requirements. The clutch cover gasket should always be replaced when installing a new clutch or anytime the clutch cover is removed. Fits: 1999-2008 Honda TRX400EX Fits: 2009-2014 Honda TRX400X