Vortex RoK Cup Shifter
Vortex RoK Shifter - PVL Ignition with Rev Limiter Vortex Rok Shifter - Dellorto VHSH Carb and Dry Clutch Vortex Rok Shifter - Oval main exhuast with 2 sub boost ports

Vortex RoK Cup Shifter

SKU : Vortex RoK Cup Shifter
Weight: 65.00 lbs

The Vortex RoK Cup is the European answer to the popular American Made Honda CR125 Stock Moto divisions. The Rok Shifter was designed to satisfy the demands of many riders who wish to compete in a category with a gearbox, but always according to the philosophy of the Rok program: low costs and stable regulations.

The engine has the following features:

  • Karting engine designed for a shifter kart, no retro fits here
  • 125 cc single cylinder two-stroke
  • Stroke and bore - 54.5mm x 54mm
  • Main exhaust port with 2 sub exhaust boosters
  • 6 speed gearbox
  • Reed valve intake system
  • Water cooled with external water pump and radiator (available in the upgrade kit)
  • Front facing intake system
  • Dell'Orto VHSH 30mm carburetor and Dell'Orto fuel pump
  • Arrow intake silencer box
  • Rear facing exhaust system
  • Dry clutch system
  • PVL Analog ignition system
  • Magnesium engine mount

SwedeTech does not provide torque or horsepower numbers since every dyno set up will output varying results.

Please Note - The factory supplied Rok Shifter Engine is not compliant with Rok Cup USA rules UNLESS your add the additional options package

Labor Options Package includes:

  • Labor to inspect internals of engine including crank run out and piston clearance
  • Labor to pressure check engine for damaged seals or gaskets
  • Labor to set engine up to optimum performance specs within stated rule structure
  • Labor to R&R Carburetor, install jetting for rules compliancy, set up proper vent line configuration
  • Modify OE Vortex engine mount to fit 30mm and 32mm chassis with either 90mm or 92mm spacing
  • Modify OE Vortex engine mount to utilize single bolt butterly clamps
  • Install hardware to include Tech Seal Nuts, Tech seal bolt, and clutch arm clevis assembly
  • Mount fuel pump 
  • Install fuel pump pulse line and fuel lines from pump to carburetor
  • Pack Silencer with Long Lasting Packing Material


Customer Points
Package Options
Dyno Break In Service
2001 OEM Honda CR125 Top End Kit
Cherry Bomb Hand Cleaner - 4 Pack
GFS Grommet Assy - Head
2001 OEM Honda CR125 Top End Kit Cherry Bomb Hand Cleaner - 4 Pack GFS Grommet Assy - Head

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