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Members => General Discussion => Topic started by: cuttyman9 on September 29, 2023, 02:38:01 PM

Title: Is250/IS350 rear bbk
Post by: cuttyman9 on September 29, 2023, 02:38:01 PM

By request-
2006-2013 IS250 and IS350 rear 4 piston bbk!

Also fits 2006-2011 GS300 should also fit GS350, GS430, GS450h and GS460

You'll need:

——————CALIPERS—————
02-10 VW Toureg (rear calipers)
03-10 Porsche Cayenne (rear calipers)
05-15 Audi Q7 (rear calipers)

(I have found car-part.com is the cheapest place to search, its an annoying website but yields the cheapest prices outside of local junkyards)

PNs  20.7673.03 and 20.7673.04


—————-HARDWARE—————-

4x hex M10-1.5x30
(McmasterCarr.com PN )

2x hex M14-1.5x30 (35mm long will work as well)
(or reuse the hardware from Cayenne/Toureg/Q7, Even though they are a bit long.)
(Mcmastercarr.com PN )

2x Hex M16-1.5x30
(Mcmastercarr.com PN )

 
———————-ROTORS—————-

2x 2008-2014 ISF rear brake rotor  PN PRT6106


——brake lines——
Stock brake lines can be used although I would recommend getting stainless braided lines as it improves feel vastly.  (testing soon)

——-Tools———
1x m16-1.5 tap



NOTE: Calipers will need to be modified but only slightly.
Depending on brand of pads clearancing the of weights might be needed. (see later posts)
I found this tool works very well for this little bit of clearancing and is pretty damn cheap!

https://www.harborfreight.com/power-tools/grinders-sanders/portable-belt-sanders/53-amp-12-in-heavy-duty-bandfile-belt-sander-62863.html

Their sanding belts are kinda shitty so prep for using a few.


**You will remove the brake line cover and the rubber isolator and bend the brake line up and away from the rotor area.**

**the brake lines and bleeders might need to be flipped, the small pistons need to come first in the rotation of the rotor**

Title: Re: Is250/IS350 rear bbk
Post by: cuttyman9 on October 10, 2023, 11:47:03 AM

This is the final setup from the outside.

Title: Re: Is250/IS350 rear bbk
Post by: cuttyman9 on October 10, 2023, 11:51:54 AM

The overall layout from the inside.

Title: Re: Is250/IS350 rear bbk
Post by: cuttyman9 on January 03, 2025, 05:08:47 PM

This shows the one set of bolts (ignore my nut spacers lol)

Title: Re: Is250/IS350 rear bbk
Post by: cuttyman9 on January 03, 2025, 05:09:14 PM

All the hardware, the left most bolt is reversed and threaded into the caliper- the bolt is the larger m16

Title: Re: Is250/IS350 rear bbk
Post by: cuttyman9 on January 03, 2025, 05:09:38 PM

This bolt is installed with the caliper and bracket off.
Then the bracket is slid over the rotor with the caliper and bolted to the knuckle.

Title: Re: Is250/IS350 rear bbk
Post by: cuttyman9 on January 03, 2025, 05:10:00 PM

This should be pretty easy to tap, the aluminum on the calipers is very nice stuff and taps super easy.
All that needs to be done is make sure it’s straight.