The kit consists of a 92mm forger aluminum piston, installed 5mm offset crankpin, bored and nikasil plated cylinder, Yoshimura billet cams, Yoshimura performance kit ignition, heavy-duty clutch kit, head gasket, and base gasket.

**Assembled**

 

Applications:

2003-2008 LT-Z400

2000-2007 DR-Z400
2003-2008 KFX400

These products are designed, manufactured, intended, and sold for use on vehicles that are operated only on closed course racing circuits unless otherwise noted.  Use of these products on public roads or lands is strictly prohibited and may be a violation of local, state, or federal laws. Products intended for use on vehicles operated on public roads or lands are clearly so indicated.