WKA/IKF had nothing to do with it, kart tracks and quite a few series outlawed it once it got out that this was happening. Also was banned in WoO and i believe Lucas Oil as well.It’s an insert that goes on the inside of the tire’s sidewalls to stiffen it, essentially a ring. KB is Kevin Bishop who was in charge of Venom Juice prep which is now handled by Chris at Track Tac. WKA/IKF struck it down when he approached them about it and he left the karting scene shortly after. Great idea, intent and the big wigs saw it as a threat to their tire sponsors because it would have made tires useable right out the gate and last longer which meant people buying less tires.
Do not know if in AKRA rules, but this hasnt been around or even available in a couple years or so.Is this a rule at AKRA tracks under the AKRA guidelines? Or does the rule need to be identified like the tires rules?