Aftermarket Parts for OTK Karts – Tony Kart, Kosmic, Exprit & FA Kart
50mm Kart Sprocket Hub – Threaded Aluminum Quick-Change Carrier, Dual Key Slot (OTK, CRG, Birel, Praga)
About this part
50 mm threaded aluminum sprocket carrier with a fast-change design. Built for quick sprocket swaps on and off the track, so you spend less time in the pits and more laps at full performance.
How the threaded design works
The sprocket bolts thread into the carrier itself and stay locked in place, doubling as alignment pins. Line the sprocket up, drop it on, tighten. No loose bolts, no fumbling for washers, no dropped hardware during a gearing change between sessions.
Fitment
- Axle: 50 mm
- Dual key slot
- Fits all common 50 mm axles: OTK (Tony Kart, Kosmic, Exprit), CRG, Birel, Praga and more
- Material: aluminum
Pairs with our 7075 aluminum #219 rear sprockets and 220 mm sprocket guards. Not sure about your axle or key size? Message us on WhatsApp with your kart model. Stocked in California.
Aftermarket part, compatible with OTK karts (Tony Kart, Kosmic, Exprit, FA Kart). Not a genuine OTK product. Silicon Valley Karting is not affiliated with or endorsed by OTK Kart Group; brand names are used only to indicate compatibility.
Orders placed before 10am Pacific usually go out the same business day.
Unused parts in original packaging. See the return policy.