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Old 08-19-2002, 01:05 PM
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gsxr gsxr is offline
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Join Date: Aug 2001
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Upgrading early W124 to 94/95 bigger brakes?

Hi all,

I've been searching the archives for information on this upgrade and have only gotten sketchy info. Most older W124's, from about 1986-1993 (with diesel or M103 gas engine), use single-piston calipers up front with a funky caliper carrier. This is what I have on my cars. The later models with M104 or M119 engine, use a fixed 4-piston ATE caliper with a thicker rotor (25mm thick instead of 22mm, from approx 1993-up). However, someone posted (with no reply) that after attempting this upgrade, the rotor hit his lower control arm! My questions were:

1- Has anyone done this personally, if so, can you post your comments (how did it go, do you like the upgrade, etc.)

2- Are there issues with clearance at the control arm or ball joint? There are different lower control arms used on the later cars (1993-up) and I'm afraid these may be required for clearance...?!

3- Does anyone know the exact diameter of the old & new style rotors? All I could find was the thickness difference, as mentioned above.


Any info would be appreciated... thanks!


Update: New information posted below - please read the rest of the thread!
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Last edited by gsxr; 03-15-2009 at 09:32 PM.
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