300mm Rear Brake Disc Upgrade - Alfa Romeo Forum
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300mm Rear Brake Disc Upgrade

What do people think of these?


Too expensive for me!

Thanks to Alfaduden on www.squadra916.com for posting this

Edit: Just noticed it says "...GTV 2 ..." will they fit a 916?
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Last edited by Rich_wookey; 22-09-16 at 19:02.
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Why? I thought the fronts do most of the braking.
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They are made for GTV 916 but I do not see the point with them (except that they look good) they are not "bigger" (brake surface and thickness) just more wider in diameter so that you need to put your brake calipers on a adapter to fit the brake disk.
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I wouldn't bother on my twinny but would like bigger rear brake discs on the v6 as mine rear discs look silly with 19 inch wheels, but I wouldn't spend 800 sorting this.

Surely there is a cheaper option,
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Just for looks, but they would look good!

They would come under the 'everything else is fixed' category IMO.
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Originally Posted by jonalfaspider View Post

Surely there is a cheaper option,
The Fiat Ulysse, Peugeot ( whatever ) uses a 295mm disc. The adaptor bracket would obviously need to accomodate the additional diameter and a 3mm difference in overall height. Other than that, everything is the same as the GTV rear disc.

I'm fairly certain this has already been done, but I can't remember where I saw it. Maybe Squadra916 ...

This Fiat Ulysse ( 2.0 Turbo ) - https://www.bremboparts.com/europe/e...d5/000003785-1

Found the topic on Squadra916. There is however a problem. This disc is too deep and touches the rear upright. Sorry.


Last edited by pkr; 12-10-16 at 18:14.
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I've got Fiat Ulysse 295mm discs on the back of my 156 GTA track slag. Its a flat adaptor bracket, so pretty easy to make. I think a pair of discs was about sixty quid.

For the same clamping effort, the increase distance from the centre of the wheel will mean more brake effort (like trying to stop the wheel turning using a short breaker bar vs a long breaker bar), however I couldn't really feel if that has translated through to quicker stopping speeds. It might help get GTVs through the brake efficiency test on an MOT though!

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I have done it years ago on my gtv, 280 x 12 disc from vw
Simple homemade adapter
looked much better and i had 330 at front and 40kg lighter front of the car so perfectly matched in braking too

and now on my track 156 300 x 12 from audi s5

18 wheel
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and this site has a really good catalogue to compare all the measurements for all car brands. Thats how i found the right disc (offset pcd and so on)

Zerosixty Performance Products

click on catalogue in top right corner
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Alan you should be making kits!

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300mm , brake , disc , rear , upgrade

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