OTK Rear Hub Extra Long 50x148mm

The OTK Rear Hub Extra Long 50x148mm (part 0053.F0) is the longest rear wheel hub in the OTK rear hub range. It mounts the rear wheel to the 50mm rear axle on OTK-based kart chassis and is a genuine OTK spare part.

Key Specifications

• OTK Part Number: 0053.F0
• Vendor: OTK
• Material: Magnesium alloy
• Axle bore: 50mm
• Hub length: 148mm
• Sold: Individually

Chassis Compatibility

• Tony Kart: Racer 401 RR, Racer 401R, Racer 401S, Racer 401 T, Racer 401 TDX
• Kosmic: Mercury RR, Mercury R, Mercury T, Mercury TDX
• Exprit: Noesis RR, Noesis T, Noesis TDX
• LN Kart: LN Four, LN Four T, LN Four TDX
• Redspeed: RX RR, RX T, RX TDX
• CS55 MY2025
• EOS
• Gillard: TG17 MY2025, TDX

Setup Notes

The 148mm extra long hub provides the most axle-to-wheel grip of any hub in the OTK range, maximising rear stability. It is typically used when maximum rear grip is required — low-grip tracks, wet conditions, or circuits where rear traction is the primary challenge. It forms the top of the OTK rear hub range alongside the 77mm short hub, 92mm standard hub, and 115mm long hub.

Designed for use with the OTK 50mm Rear Axle. Wheel nuts, axle, axle key, and fixing hardware are sold separately.