Originally Posted by
NitroXray80809
The only big diffrence is chassis and chassis braces. You can choose to go short or long braces and chassis just makes car more stable.
What he said. Oh and the forwarded battery mount. I haven't tested the forwarded battery, but the weight transfer should be less aggressive off-power.
I have the 2011 EU kit which is the same as the R kit, but without the forwarded battery tray and the Bittydesign body. The longer chassis makes a difference, the that really depends on the track and on your driving style.