Originally Posted by Rawwolf

Hello all. I picked up a B4.1 chassis on ebay then bought parts from amain to complete the roller. The battery brace I bought is just barely too short. I got the carbon brace for the b4 but amain shows it fits all b4s.
How can I find out what chassis I have? What is the difference between the +8 and a reg b4 chassis? Thanks for any info.