The Tonykart OTK Genuine 50mm Rear Axle (0054.G0) is a factory-original component engineered by OTK Kart Group for maximum performance and reliability. This axle is part of OTK’s official range, built to provide the right balance of flexibility and stiffness for your kart’s setup.

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.

✅ Genuine OTK factory part
✅ 50mm diameter, 2mm wall thickness
✅ Available in multiple stiffness options (E through HH)
✅ Precision-engineered for Tonykart and OTK chassis

Part Number: 0054.G0

Choosing the correct axle hardness can dramatically change how your kart performs. Softer axles allow more flex and grip, while harder axles improve stability and reduce chassis twist. With this genuine OTK axle, you can fine-tune your setup for any track condition.