RB is back in 1/8 On road with this totally exclusive Circuit 9. This very high level racing engine meets all the latest technical evolutions promising you unmatched sensations
Very high level racing engine
9 ports + 3 Multi Exhaust System (MES)
Light machined piston rounded with special shape and smart groove to remove easily the wrist-pin clips
Turbo plug
Turbo combustion chamber with o-ring avoiding vibrations and preventing dirt
-14.5mm crankshaft with 2 balanced weights and silicon paste (long stroke)
14.5mm main bearing
Modified crankcase with new divided shapes on lateral ports and 14.5mm bore
Aluminium 9mm carburettor with Alu. orange anodized 8.5mm Venturi
Aluminium orange anodized carburettor wrist pin
On Road L2G cooling head
Dust protection caps for carburettor, exhaust, fuel intake and top of the crankshaft
