Well spotted
Kudos to you sir, you have a keen eye!
They are Oxygen M6CD
So they are period, they are on XT hubs which is a bit naughty as I have sneaked some Shimano onto the bike
Although the tyres are outrageously non period, they are skinwall
But this also means it has 21 gears with 11-28 hyperglide on the back so is a lot nicer to ride
I'm running the Accushift shifter in friction mode