Tonykart OTK Genuine 50mm Rear Axle

Tonykart OTK Genuine 50mm Rear Axle

1030mm Medium/N

The Tonykart OTK Genuine 50mm Rear Axle (0054.G0) is a factory-original component engineered by OTK Kart Group for maximum performance and reliability. 

Each OTK axle is 50mm in diameter, 2mm wall thickness, and available in a range of hardness options — from soft through to extra-hard (HH). The hardness rating affects the kart’s handling characteristics:

• Soft (U, Q) – Provides more flex, helping with grip in low-grip or cold track conditions.

• Medium (N, A) – Balanced stiffness, ideal all-rounders for most track situations.

• Hard (H, HD, HH) – Increased rigidity, delivering more stability and consistency on high-grip surfaces.

Choosing the correct axle hardness can change how your kart performs. Softer axles allow more flex and grip, while harder axles improve stability and reduce chassis twist.