Set of wheels on chain reaction come with three freehub options.

*Shimano/Sram
*Campag
*Dura-ace

Whats the difference between the (shimano/sram) and the (Dura-ace)??

I’d hazard a guess that these days it means 11 speed (which is backward compatible with 10 speed with a spacer), but when they first did 7800 10 speed Dura Ace the freehub splines were deeper, to avoid the cassette biting in, so you needed a Dura Ace specific freehub.

Technically it’s wrong either way, as Ultegra is now 11 speed, and the very first 6700 groupsets also needed the deeper splines.

I have old 10spd Dura-ace group set anyone know if i would fit the Dura-ace freehub?

the very first 6700 groupsets also needed the deeper splines.

6600

Hi Nick *waves*

Ohhhhh, dammit, should’ve got that right, poor show!

Hi Mark *waves back, whilst self flagellating*

I have old 10spd Dura-ace group set anyone know if i would fit the Dura-ace freehub?

Yes, you’ll need a small spacer on the (very likely) assumption they mean it’s an 11 speed freehub body, but that’s a better bet as it’ll give you backward compatibility.

Buy it and if it doesn’t fit send it back for free.