Description
The Vortex VTJ is the CIK-FIA homologated 125 cc engine for OK-Junior, the FIA Karting junior direct-drive class. Successor of the DTJ, it uses cast-and-machined crankcases and, for the first time at Vortex, paired crankcase boring. Supplied as a bare engine with ignition, in Dubai for the UAE and GCC.
Key specifications
- Homologation: CIK-FIA 012-EJ-29, OK-Junior (Group 2)
- Displacement: 125 cc, single-cylinder two-stroke, reed-valve intake in the crankcase
- Bore x stroke: 54 x 54 mm (square)
- Cooling: liquid, external water pump
- Cylinder: fully machined cast-iron dry liner; 5/3 cylinder/crankcase transfers; fully machined intake section and transfers
- Roller main bearings; balance shaft
- Connecting rod: 102 mm centre to centre
- Ignition: Selettra, CIK-FIA homologated 034-IG-20
- Maximum engine speed: 14,000 rpm with rev limiter
In the box
- Engine with roller bearings
- Selettra ignition and coil 034-IG-20 (14,000 rpm limited)
- Spark plug and cap
Exhaust, carburettor and engine mount are not supplied.
Genuine Vortex engine (OTK Kart Group), code VORENG – VTJ, supplied by Scuderia General Trading, exclusive UAE distributor of OTK Kart Group. In stock at our Dubai warehouse where shown; orders are dispatched the same day they are received, with DHL Express delivery across the UAE and the GCC.





Reviews
There are no reviews yet.