High quality 50mm kart axles suitable for most kart classes including Rotax, TKM, KF1, KF2. The axles are available in different lengths and in various stiffness's giving different chassis handling characteristics. All 50mm axles are hollow and have a 2mm wall thickness.Axle Stiffness OptionsExtra SoftSoft (350-400 N/mm2) - Colour code Red. Equivalent to OTK type UMedium / SoftMedium (480-550 N/mm2) - Colour code Green. Equivalent to OTK type NMedium (springy)Medium / HardHard (650+ N/mm2) - Colour code White.Extra Hard
