6235 - Race Ported 28.5cc 4 Bolt Top End

We are extremely proud

</p> <p>We are extremely proud to release the TR/OBR 4 bolt reed case

This long block can be order with a OEM Zenoah crankcase or our billet crankcase in the drop downs

FG Sportline

This kit comes with everything need to turn your motor into a beast except for a 2mm crank

</p> <p>This case has been left very versatile

6235 - Race Ported 28.5cc 4 Bolt Top End </p> <p>We are extremely proud<p>(Our porting is not shown in picture)<br >This is a brand new race ported 28. 5cc G290RC 4 bolt top end. This kit comes with a hand ported G290RC cylinder, piston, ring, wrist pin, c clips, spark plug, needle bearing and base gasket. The following port work has been done:< p> <p><br >1. Resurface all ports for better gas air mixture<br >2. Modify transfer ports for better flow<br >3. Enlarge and reshape exhaust port<br >4. Exhaust timing raised to