OTK Stub Axles (Spindles) - Fits All 8 OTK Kart Group Brands
Genuine OTK stub axles fitting all 8 OTK Kart Group brands — Tony Kart, Kosmic, Exprit, Redspeed, EOS, Gillard, CS55 and LN Kart. HST, BST, BSF, BMT and KZ/shifter models, most complete with bearings.
The stub axle, also called a spindle, is the pivot point connecting your kart's front hub to the steering system - it lets the wheel turn and absorbs the steering and braking loads generated on track. Because Tony Kart, Kosmic Kart, Exprit Kart, Redspeed Kart, EOS Kart, and Gillard Kart all share the same chassis frame, bodywork, and components under OTK Kart Group, a stub axle bought here fits any of these brands, plus the Carlos Sainz CS55 and LN (Lando Norris) signature karts. The only thing that changes between them is paint and graphics, not the parts underneath.
We stock the full range of OTK stub axle types: HST, BST, BSF, BMT, MSHL, MST, and SA2 versions for standard chassis, plus a dedicated BSS stub axle built for KZ and shifter karts, which see higher braking loads at the front. Most are sold complete with bearings fitted, so you can install and go.
How to choose the right OTK stub axle
The correct stub axle depends on your chassis model and generation, not the brand badge on the bodywork OTK has updated stub axle specs across chassis generations, so a part that fits one model year won't necessarily fit another, even within the same brand. Check your chassis manual or the code stamped on your existing stub axle (e.g. HST, BST, BMT), and confirm bearing bore diameter if you're replacing bearings separately.
Not sure which one you need? Send us your chassis brand, model, and year via WhatsApp or contact - we'll confirm the right part before you order, whether you're running a Tony Kart, Kosmic, Exprit, Redspeed, EOS, Gillard, CS55, or LN Kart.