Originally Posted by
henschel
Gizmomotors.com make a top end kit for the K30RZ rear exhaust. Do the upgrade and that K30 will be putting out 7.5hp
Before purchasing 1 of these K30 RZ topkits modded by gizmo make sure they havnt removed the extra sleeve,i know they do on the SE version
the older RZ sufffered piston problems
I run the the K30 rz topkit with only a couple of mods but left the sleeve alone and piston still looks good and plenty of power
http://youtu.be/wgBhiieJF3w