You are going to want these:
http://www.amainhobbies.com/product_...nsert-Medium-2
If you cant get those i would recommend the AKA stuff. If you use closed cell foam you will want to punch two 2-3mm holes in the tire (180° from each other). If you use standard foam then you only need the hole in the rim. Depending on the surface and how much you run the foams can easily last a couple sets of tires.

Why rear foams in front tires? They make fronts. 2wd buggy I put 2 holes total. Each 180 degrees from each hole.

Because they are bigger and add more support to the fronts.

Try standard front foams on a high bite track, and you will understand.

Hm, intresting. Never thought about that. Might have to try that out

I did at this years Cactus Classic I actually ran pretty good with them

Would have been better with more support. It is more of a middle ground between a std front foam and a closed cell front foam. I always shove at least 3/4 of a rear in my fronts.

What does the different springcups included in kit do? Droop adjustments?
Which one to start off with?

Thanks!

I thought racers prefer the 3206-2 better in the rear tires?

What is 2-3mm equal to in inches of the punching tool?

I dont know...i use the one in the middle...maybe just smaller than the middle one. The 3206-3 has a rounder profile and fills the tire up better. the -2 is flatter.

The different sized cups are included with the Big Bores so you can use the same length springs on truck or buggy. The medium sized ones are always used on the B4 I believe.

Run the middle ones. They are mainly desgined for use with the truck, buggy you will always use the middle. Its not a tuning option. They only made front springs and rear springs, no more truck fronts / buggy fronts. By running a longer cup on the truck you can use the same length springs and still achieve proper ride height.

Did you win the a?

I believe the shocks internal spacers (limiter) adjust droop, I might be wrong though this is my first B4

Hideeho
Sorry ahead of time because I know it has been asked before but I couldn't find it in a quick search

What size are the bleeder screws for the BB's?