CONTACT RC - 1/12 GT12 Atom Front 42Sh Q Foam Tyres 46mm - JG42FQ (1pair) Bearin
It does however have higher wear rates so needs to be replaced slightly more often than A. It works great on ETS type carpet. CORE RC ALLOY 1/10 STANDARD SIZE SERVO ARMS - BLACK/PURPLE - OFFSET/STANDARD - M.