OTK

OTK HST4 STUB AXLE - 25mm (New 2025)

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$318.00
Stub Axle Size

Product details

  • Vendor OTK
  • SKU 0092.00M-KIT

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OTK – HST4 Stub Axle (25 mm)

Category: Front Stub Axle – Senior Chassis

Genuine OTK HST4 stub axle, engineered for precision steering response and front-end rigidity across senior kart categories. Featuring a 25 mm stub diameter, this axle is designed for use with magnesium hubs and 6905 bearings, delivering race-grade durability and handling feedback.

Features & Benefits:

  • ✅ OEM OTK component – guaranteed fit and finish

  • 🛠️ CNC-machined for precision alignment and strength

  • 📏 25 mm stub diameter – compatible with HST and BST hubs

  • 🔩 Dual keyway slots for secure hub engagement

  • 🎯 Ideal for OK, KZ, TAG, and KA100 categories

Specifications:

  • Stub Diameter: 25 mm

  • Material: Hardened steel

  • Finish: Milled

  • Bearings: 6905 (25×42×9 mm)

Compatibility:

  • Fits Tony Kart, LN Kart, Kosmic, CS55 senior chassis

  • Works with OTK HST/BST magnesium hubs and wheel spacers

  • Not compatible with 17 mm stub setups or Mini/Cadet chassis

Ideal For:

  • Race-day replacements

  • Chassis tuning via stub axle length and flex

  • Drivers seeking consistent steering feel and durability