Sirio S21 XL7 Off/Road 7 port Buggy Engine
This is the New Sirio .21 XL7 engine and is specially made for the 1/8 Off/Road class.
New Piston&Lineer, underhead plug, black threated on new cranckcase, and new Carburetor with metal Bushing.
In this Version included Swiss High Speed Bearing for Best Perfomances!!!
Crankshaft & Type: 14,20mm Turbo SG (balanced)
Bearing: High Speed
Glow Plug: Turbo