OK, sorry for being repetitious, but what in the heck are Alcon brakes? How do I know if I have them? Are replacement brake pads generic in that respect? Can I get non-alcon brake replacement pads?
Thanks for your patience, I'm still dealing with the idea you have to remove both front wheels to change air filters!

 

Check this link out for what Alcons look like - non Alcon brake pads are available.

https://www.jaguarforums.com/forum/p...lipers-118733/

 

Thanks, so the red calipers denote Alcon? Mine has the red ones. Any diff with the pads?

 

No, don’t have to be Alcon to be red. Look for crescent shaped cutouts in the disk face. The front calipers are 6 piston and the rears are 4 piston.

See this thread:
Alcon brakes

 

@Jag First timer No, red calipers aren't exclusive to Alcons. Your 2011 doesn't have Alcons.

In the North American market, the Alcon Performance Brake Package was available only on 2008 and 2009 (4.2L) models. They were an expensive $5,000 option in 2009 because:

1. Calipers: painted red, both fronts and rears are cast with raised //R Logo, (not a sticker). Fronts are printed "6 piston". Rears are not printed and have 4 pistons.

2. Discs: 400mm front, 350mm rears with crescent-shaped grooves. The largest rotors ever fitted to a production Jaguar at that time.

 

A 2011 XKR wouldn't normally have the multi piston Alcon kit. Most probably:

Front disc: C2P12622 (380 mm)
Front pads: C2D3801 (DOT GG Jurid)
Rear disc: C2P13648 (376 mm, often stated as 380 mm)
Rear pads: C2D3792 (DOT FF ATE)

 

Well, this group is very helpful! You guys have given me a lot of info and made it easy.
I can't say how much I appreciate the help from you.

 

Dom,

You can express your thanks by pressing the button at the bottom left corner of that post.

Stuart

 

Re-reading this caused me to go look at the wheel photo of the one I’m going to see/buy.

Managed to get a side-by-side of your pic above and the wheel.
Shape looks exactly the same. But no raised iR or it was painted over.

what’s everyone’s take here?

Left post - Right my seller.

 

I see overspray on the valve cap!
wj

 

They are Alcon, just badly spray painted.

 

Since other side, the raised R would be behind the spoke of the wheel. The bad paint is covering the "6 PISTON" decal.
OR, I may be an idiot.

 

Thank you gents.
So basically I’ll have to remove them and have someone strip off the paint and repaint them as well as the raised iR and get a 6 piston decal (2 piston for the rear?).

 

The pic you posted looks like the rear caliper - there is no "2 piston" label - they are in fact 4 piston