New Release GZR-5 this is a awesome package. If you like the GZ-4 Then you will fall in love with this a perfect balance of RPM'S and more torque then the GZ-4. We have been testing this engine for while now with amazing results. 25.4 cyl 1.6 stroker crank which makes this a screaming 27cc engine. these are the most powerful 34mm bore engine out there The GZR-5 another innovation from GIZMOMOTORS.

 Now comes with our billet case