6224 - Race Ported Zenoah 2 Bolt 25.4cc Top End If you are upgrading from

If you are upgrading from one of our piston port engines we highly recommend that you ship us your engine to be converted

34cc and 35

</p> <p>These cases do not use a crankcase gasket

Sealant is required when installing

Engine Cover (shroud)

6224 - Race Ported Zenoah 2 Bolt 25.4cc Top End If you are upgrading from<p>This Zenoah 25. 4cc big bore kit has been race ported for maximum performance. The intake, exhaust and transfer ports have been opened up for the best possible performance.< p> <p><br >This kit fits the following:< p> <p>Motors: G230RC, G260RC, St23rc, St27rc, He23hp, He26hp.< p> <p>Off road Rc Cars: HPI Baja 5B 5T 5SC, FG Marder,FG Marder Race,FG Monster Beetle,FG Monster Beetle Pro,FG MT5,FG Stadium Truck, Duratrax Firehammer, Carson Attack,