Let Trinity's 440cc kit give you the edge on the competition. Start with a Stage IV exhaust then stack the deck in your favor with the Trinity sleeve and hone your cylinder, then squeeze in a 11:1 high-compression piston. Top it off by having Trinity pro-port your cylinder head with the high-flow valve job and a chamber mod. Also included is the Stage II camshaft & Trinity's heavy-duty gasket set.

New from Trinity Racing is a 460cc stroker kit for the Honda 400EX. This kit includes a new stroker crank, complete gasket kit, forged piston kit with high or low compression ratios and a new cylinder sleeve. Wake up your 400EX by installing this kit and see what you've been missing.