BMW ZF S5D 5spd dogbox gearset


BMW ZF S5D dogbox gearset fits to M3, 325 and several other car models. The gearset has a handful of special features built-in. Shifter mechanisms are completely rebuilt, to make them as robust and rigid as possible. Clutch shaft is stronger than original and it can be built for other splines as well. Can be fitted for other car and engine models with aftermarket adapters or by bell housing modifications.


For high power vehicles, over 500hp, we offer heavy-duty HD model counter and input shafts for extra price. The HD model gearset setup has been tested up to 1100hp in drag racing and up to 1000Nm in drifting. Check our reference page and video how customers use the gearbox.




  • 5 Speed Dogbox gearset
  • Re-designed stronger shifter mechanism
  • Patented design to improve power handling capabilities
  • Extremely strong gearing
  • Fits to OEM housing with small modifications
  • Dogleg shift pattern
  • 2 ratio sets available:
    • “Longish” 1st gear, bigger drop between gears (Drift, Rallycross, Drag, Street):
      Ratios: 2,73, 1,83, 1,42, 1,16, 1,00
    • Long 1st gear, smaller drop between gears (Rally, Track):
      Ratios: 2.23, 1.71, 1.38, 1.16, 1.00
    • Fits to housings: ZF S5D-260Z, S5D-310Z and S5D-320Z


BMW ZF S5D 310/320Z – 5-speed dogbox gearset