OTK HST MG Front Hub Complete - l.80mm (25mm)

The OTK HST MG Front Hub Complete - 80mm (25mm) (part 0103.C0CKIT) is the short magnesium front wheel hub kit for OTK kart chassis fitted with the HST front hub system. It is designed for KZ and OK chassis running a front brake, where a 25mm stub axle bearing bore is used. Supplied as a complete kit including the hub body, bearing, spacer, and locating ring. A genuine OTK spare part.

Key Specifications

• OTK Part Number: 0103.C0CKIT
• Vendor: OTK
• Material: Magnesium alloy
• Stub axle bearing bore: 25mm
• Hub length: 80mm
• Hub system: HST (front brake compatible)
• Supplied as: Complete kit (hub, bearing, spacer, locating ring)

Chassis Compatibility

• Tony Kart: Racer 401 RR, Racer 401R, Racer 401S, Racer 401 T, Racer 401 TDX (KZ / OK with front brake)
• Kosmic: Mercury RR, Mercury R, Mercury T, Mercury TDX (KZ / OK with front brake)
• Exprit: Noesis RR, Noesis T, Noesis TDX (KZ / OK with front brake)
• LN Kart: LN Four, LN Four T, LN Four TDX (KZ / OK with front brake)
• Redspeed: RX RR, RX T, RX TDX (KZ / OK with front brake)
• CS55 MY2025
• EOS
• Gillard: TG17 MY2025, TDX

Buying Advice

OTK front hubs are available in three HST lengths for 25mm bearing systems: 80mm (short), 95mm (standard OK), and 110mm (long, KZ). Front hub length affects how the front wheel is positioned laterally on the stub axle and influences front-end grip and steering feel. Verify the correct length against your chassis setup documentation before ordering. Sold as a pair (left and right) or individually — check quantity before purchasing.