This is the brand new Zenoah G240RC 22.5cc engine. This engine has the following improvements:

4 bolt cylinder for longer base gasket life

Improved crank case (added rib on the muffler side of the crank case)

Added crank case bearings(replaces large oil seal)

Redesigned shape of cylinder fins for better heat dissipation

Intake port is 5% wider

This engine comes stock with a modified wt-813 carb

Intake manifold gasket material has been changed to metal for improved sealing

Added flat washers and lock washers to cylinder bolts to help retain torque

This is a race motor right out of the box and comes with no warranty from the factory.

This motor fits the following:

Offroad Rc Cars:Hpi Baja RTR, HPI Baja SS, FG Marder,FG Marder Race,FG Monster Beetle,FG Monster Beetle Pro,FG MT5,FG Stadium Truck, Duratrax Firehammer, Carson Attack, Smartech Travel,ler,FG Leopard, XTM
Leopard Race,FG Leopard STX,FG Marder Beetle,FG Pajero, And most other large scale cars

Onroad Rc Cars: FG Evo-4,FG Sportline, HARM,FG F-1 Competition, And most other large scale onroad cars.