Six-speed gearbox power for the Rok Cup
Rok Shifter
- Displacement
- 125 cc
- Cooling System
- Liquid-cooled through external pump
- Max Power
- 43 HP at 13,900 Rpm
- Bore and stroke
- 54x54.5 mm
Exclusive UAE distributor since 2013
Rok Shifter brings a six-speed gearbox and front clutch to the Rok range, for drivers who want geared competition without leaving the Rok Cup's low running-cost, steady-regulation approach. It runs a 125cc engine with four reed valves and external-pump liquid cooling (pump not included), rated by Vortex at 43 hp.
Specifications
| Specification | Value |
|---|---|
| Displacement | 125 cc |
| Engine | 2 stroke |
| Cooling System | Liquid-cooled through external pump |
| Exhaust | Oval exhaust and 2 boosters; Shifter Rok moulded exhaust |
| Bearings | Radial bearing C4 |
| Bore and stroke | 54x54.5 mm |
| Max Power | 43 HP at 13,900 Rpm |
| Max Torque | 14,000 Rpm |
| Ignition | PVL analogical ignition |
| Carburettor | Dell'Orto VHSH Ø 30mm |
| Silencer | Arrow intake silencer |
| Fuel Pump | Dell'Orto |
| Other features | Front clutch six-speed gearbox system; dry clutch; exhaust silencer ROK in aluminium; magnesium engine mount |
| Homologation fiche (PDF, 2026) | https://download.otkkartgroup.com/rok/2026/4_Rok%20Shifter_2026_rev03.pdf |
Specifications and photos from OTK Kart Group / Vortex Engines, checked on 27 September 2026. Descriptions written by Scuderia General Trading.
Buy the Vortex Rok Shifter on kartshop.me
Genuine Vortex engines, stocked in Dubai, on our online store.
