I run dirt oval at Xtreme R/C in New Milford CT. Does anyone know where I can get mounted foams that will bolt up to Associated B4? Do I need any adapter for the rears? Thanks.

http://www.speedysracingparts.com/

Thanks for the info. Here's another one... Does anyone make caster blocks 0, 5, or 10 degrees for the B4? I believe Associated only makes 25's and 30's.

I don't think so. I've reamed out the B4 outter arm hinge holes to use the RC10 blocks.

Any foam tire mounted on a Custom Works rim will fit if you trim up the rear hub carriers. BSRs are a good choice. Redneck RC stocks them for roughly $40-42 a set... give them a call at (315) 532-6826