RB off road line has been simplified.
4x .21 Engines
2 Nova built long strokes:
B10 = 5+2 with Multi exhaust
X10 = 3 with Multi Exhaust. Replaces the WS7 square stroke family.
Shark 9 = X10 with balanced crank
2 Sport engines:
K10 = 5+2 long stroke
S10 = 3 square stroke.
Above .21
RT10 = 7 port Truggy multi-exhaust
MT10 = 3 port Monster truck multi-exhaust
1x .23 based on Sirio for Traxxas
I am not familiar with RB onroad line. Only used one for a TC before.
