Seems pretty straight forward. Never done boots on this car though.
Any tips or tricks or helpful ideas specific to the S6? Just curious. Driver and passenger side.
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Thanks.
WOW those are toast. Several people say its better to just replace the entire shaft Vs doing just the boots.
That’s what I ended up doing. Not sure, think I found the whole axle for about $150. Jim Ellis Audi, factory parts at a decent (25%?) discount.
Oh wow. The cheapest shafts I’ve found genuine Audi right now is about 500 each.
That’s why I was just going to do the boots for 30 a pop. Not really worth it for that much.
I’ll have to do more looking and see if I can find some cheaper. Maybe then I could go that way.
$500 or so is what you should expect. I ended up getting mine rebuilt.
About how much did that run you?
RAXLES FTW all day.
Sadly with the S6 they are $350 (ea) w/ o the opportunity for the standard $100 core
One of my axles just blew a boot at the auto cross as well. I just replaced with one for $150 from wolf auto parts. - kickin the can down the road.
I just replaced the CV. Who knows how long that’s been open. Do the whole joint.
I think it set me back $400-500 including labor. It was a month after I got the car, lol. So much for the inspection I paid for. 
Just completed the inner passenger cv boot. $20 for the kit from Napa.
You will need to remove the heat shield, the top bolt is a bit tricky as the frame sits halfway in front of the access space.
As well, I replaced all the inner bolts and the axle nut.
I would say, that I know exactly when the boot got damaged and the car had 30km on it from that point, I felt more comfortable just replacing the boot vs the whole axle shaft.
Only 30km—you’re totally fine. Cleaning and repacking is all you needed.