JC, Proline, AKA and a few others market them as the same offset. The "could" be different that the Kyosho brand wheels or Losi brand wheels. I dont have those brands, but if someone has those rims and can measure and post the offsets. If do know all those rims have a different stiffness and that could effect the feel on some tracks.

b4 works with 22 rear wheels, and rb5 front wheels

The offset is the same from the Kyosho to the Associated. There must have been something else causing the push you were getting

Since I am basically already running the 4.2.. Here is my setup sheet from my last trophy race. I have never had my car feeling better than it did with this setup. I have only run this setup on carpet so I don't know how it would do on clay.

The track was tight and not super big. The straight was maybe 20-25 feet.

Wow what a let down. AE been pushing that chassis for a decade.

the chassis is only a couple years old at most

If it ain't broke...

What? Couple years? Pretty much same chassis as all the rest of the B classes.

no its got an extra 8mm that was only added when they released the b4.1 Wc and as everyone says if it ain't broke don't fix it

lol, the +8 is a different chassis, because it is not exacly the same. They also added a grub screw to hold the antenna since the original chassis

some one have a use one for sell?

used what?

b4.2 kit

ummm, they haven't even shipped yet. Look for a B4.1 that has all the upgrades. Plenty of those popping up.

Does the current chassis keep it from winning races or world championships? I know, let's give it an aluminum chassis with plastic side pods because that looks new and techy. Oh wait.. Durango and 22 has done that already. Oh wait, for the Durango to work let's put on that all new plastic chassis. Ok done. The 22? It only works when you have insane amounts of traction otherwise it's spinning out on the track. The B4 just plain works and with this new variation, perfection.