New Release 2026 GZR-30.5 cc Zenoah Pro Mod engine. Since we were the first to make the 36mm marine engines this is the most powerful 36mm Pro Mod engine on the market. We have done endless testing, with our new crankshafts. and with our new port design and our 2026 NEW RELEASE of our sole proprietary designed crank built for our engines only You get the torque of the 35cc and the rpms of a 26cc.  Chase one or own one!

This is what you get

New for 2026 Our GZR-30mm Full circle stroker crankshaft

 New 2026 port design 95% hand ground pro mod cyl done buy us at our shop.

 Dismantle Zenoah PUM 300 with ez-start or 2026 V3 billet crankcase

 Engine is completely inspected cleaned

 Install our new full circle 2mm crank

 Install our Pro Mod piston and ring and set to our specs

 Install our new 36mm Zenoah cyl and set to our spec's

 Comes with our mod 1048 or 1027 depending on stock

 Matched ported GZR alum insulator block

 Install our billet carb cover

 Comes with zenoah ez-start

Go with the best not one the rest.

Another new innovation from GIZMOMOTORS