Decathlon RockRider 8.1 headset

Head Set Decathlon Rockrider 8.1 and 8.2

I have to find the heaset for this great frame I contacted Decathlon who was useless and sold me the wrong part stating this was not on their catalog as it was a 2010 bike.

I have subsequently found this with a with a 1 1/8" external cane creek unit....