Azusa Engineering 1-1/4" Tubular Black Steel Live Axle - 40" Length / .190 Wall - Universal / Developmental SeriesAs one of the most critical upgrades available from premium go kart suppliers, this 40 inch black steel axle delivers the expansive rear geometry required for high torque power delivery. Engineered with a massive . 190 inch wall thickness, this industrial grade tubular steel axle is built to withstand the extreme torsional loads generated during aggressive cornering and rapid acceleration. By anchoring wider track widths, it effectively distributes