I don't understand the confusion: The Porsche motorsport gear box always has clutch

Here are the specs: 

  • Porsche 6-speed sequential dog gearbox with active oil cooling and internal pressurized oil lubrication system
  • Gear ratios:
    Drop Gear 25/32 1,280
    CW & P 09/26 2,889
    1st gear 13/41 i = 3,154 
    2nd gear 17/39 i = 2,294 
    3rd gear 20/37 i = 1,850 
    4th gear 23/35 i = 1,522 
    5th gear 22/28 i = 1,273 
    6th gear 31/34 i = 0,931
  • Limited slip differential 37% drive / 52% overrun
  • Single mass flywheel
  • Race clutch (5½" triple plate carbon clutch)
  • Hydraulic release bearing
  • Oil-water heat exchanger
  • Rear wheel drive
  • Paddleshift-System

 

It has nothing to do with PDK that does not have a clutch.