VagBremTechnic Big Brake Kit for E85/E86 Z4 'M' models

Beedub said:
very nice, very nice indeed and I think this will sell well.... well done!! and making it modular too :thumbsup: :thumbsup: :thumbsup: :thumbsup:
now talk to us about the piston sizing compared to stock if possible... lets get technical.

The piston sizes are matched extremely well with only a 1.7% piston area decrease which means the pedal travel will be just like OE.
 
john-e89 said:
Superb kit.

Any plans to make the carriers for the E89? I'd buy this kit if you did.

Next up is the E46/E85/E86 Non-M models.
Once this is done we do have some plans to look at the E9x M3 models, but I'm not sure how much of that will be similar to the E89 Z4.
 
nfbr said:
john-e89 said:
Superb kit.

Any plans to make the carriers for the E89? I'd buy this kit if you did.

Next up is the E46/E85/E86 Non-M models.
Once this is done we do have some plans to look at the E9x M3 models, but I'm not sure how much of that will be similar to the E89 Z4.

Without the bolt centres and distance from hub to disc edge etc etc measurements I don't know. If I measure everything needed on my car would you give me the measurements you have for the M and M3 so I can compare? I know they would be rough measurements I took but I reckon I can get to within 1-2mm on mine.
 
john-e89 said:
Without the bolt centres and distance from hub to disc edge etc etc measurements I don't know. If I measure everything needed on my car would you give me the measurements you have for the M and M3 so I can compare? I know they would be rough measurements I took but I reckon I can get to within 1-2mm on mine.

E89 seems to use a completely different PCD for the caliper bracket mounting bolts, so this kit won't fit unfortunately.

We don't as of yet have an E9x hub for development so I can't give any measurements off that one just yet.
 
Ah very cool as I thought of repainting mine and dear god could I make mind up!!

But if fit nicely under csl 19s I'll be interested and decide upon a colour

Ps where based??
M
 
D4dawg said:
Ah very cool as I thought of repainting mine and dear god could I make mind up!!
But if fit nicely under csl 19s I'll be interested and decide upon a colour

Ps where based??
M

I know that feeling! It took me about two weeks to finally decide on painting my stock calipers silver.
We'd probably have to test a wheel as a spacer may well still be required for the face of the caliper to clear the backs of the spokes.
I'm not too sure how the OEM CSL's are for clearance.

We're based in Manchester, but have a few dealers dotted around the country.
Regards, Al.
 
nfbr said:
john-e89 said:
Without the bolt centres and distance from hub to disc edge etc etc measurements I don't know. If I measure everything needed on my car would you give me the measurements you have for the M and M3 so I can compare? I know they would be rough measurements I took but I reckon I can get to within 1-2mm on mine.

E89 seems to use a completely different PCD for the caliper bracket mounting bolts, so this kit won't fit unfortunately.

We don't as of yet have an E9x hub for development so I can't give any measurements off that one just yet.

Ok shame but thanks for replying anyway.
 
Maybe one for the future though John :)
Trouble is, we kind of have to put the VAG development at the forefront of the business.
 
nfbr said:
Maybe one for the future though John :)
Trouble is, we kind of have to put the VAG development at the forefront of the business.

Yes of course, needs must.

I really like well made kits using an existing caliper so best of luck, it looks a great quality kit.
 
Worcester_spoon said:
nfbr said:
Next up is the E46/E85/E86 Non-M models

Where do I sign up!!! :driving:

Can't wait to hear on this development. Assuming pre and post facelift?

Front hubs and Brake line setup is the same on all Non-M Z4's, so it will be included. No ideas just yet on a timescale though.
 
Anybody take the plunge yet? Those DB9 callipers seem to come up quite often on eBay for not a lot of money, although when you factor in the price of a full refurb, the VagBremTechnic option seems tempting!

Shame there's no 2/4 pot rear option. I guess the balance would be ok with the stocks rears, but they'll look crap in comparison to the Brembos and you won't be able to hot-swap the pads for track days.
 
From memory we've sold 3 sets now for Customers with E46 M3's as well as the set on my colleagues car that we did the development work on.
 
nfbr said:
From memory we've sold 3 sets now for Customers with E46 M3's as well as the set on my colleagues car that we did the development work on.

Cool. Shame you're a 7 hr round trip from me otherwise I'd happily donate the car for a test fitting!
 
nfbr said:
With regards the BMW Performance kits, these are great if sticking to the smaller size disc, but the caliper is used as standard to work with a 25mm thick disc, so future adaptability to a large diameter disc can be limited.

26mm. They are afaik desinged for 26mm and afaik also work with 30mm (e92 335i/m3 disc thickness). And of course with the 28mm z4m disc.
I dont know what the max thickness is though. But the caliper is narrower than for instance a brembo GT caliper I think.

(There is also a minimum thickness.... you dont want pistons falling out when your pads&discs start to wear :lol: )

Don't forget if you fit a BBK with more/stronger bite to fit a more aggressive pad in the rear also to retain the brake bias and get the maximum braking performance.
 
Here are some pics from my prep/install - apologies for those on slow connections! Many thanks to Al ([ref]nfbr[/ref]) from Awesome GTI and Mike from VagBremTechnic for answering all my questions. :)

Went for the adaptors, HEL lines, new discs, calipers in red and Pagid pads. I guess my main motivation for the purchase was because I wasn't very happy with the stock pedal feel (having recently driven's a friend's 997 in anger and been fairly shocked at the difference), but looks were certainly a factor too, as was the chance to try these on a Z4M for the first time.

I plan to upgrade the rears as well in the future so didn't want to spend a lot of money on a refurb, especially since the calipers are factory-boxed items from Aston Marton. This meant removing the Aston logo and replacing it with a Brembo one (eBay - 90mm). I did this by wet-and-dry sanding the black lettering off, sanding the entire front face to an edge, then applying the Brembo decals and a few layers of VHT clear coat.

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The brackets and spacers are just gorgeous, to be honest. So well engineered - shame that they are going to be hidden! Everything came labelled up as well, although you'd have to try quite hard to fit things wrongly.

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I tried pretty much everything in the book to get the seized allen bolts out of the existing discs, but unfortunately I have some numpty's past enthusiasm to thank for this mess:

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:roll:

I took the opportunity to tidy up the dust guard and hub before fitting the brackets. To clear the adaptors you also need to bend the very lowest part of the guard back through 90 degrees, which is easy to do by hand. I left the old calipers hanging by a bungie cord until it was time to switch them over.

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Some pics of the finished install:

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Of course, by this point the rears were starting to look pretty crap, so I spruced them up too. Just a quick job, done on the car with lots of masking tape:

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So that was it and off I went for a 1000 mile shake down in the direction of Le Mans! :driving:

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With the exception of a serious moment of self doubt during the bleeding process, everything went smoothly - no issues with the kit itself. It is early days still, but first impressions are that the pedal travel is a little longer, with a more progressive onset of braking force along its length, and overall stopping power is at least as good as stock (which is excellent, in my opinion). :)
 
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