42 replies to this topic

[FragLord]

Hi all,

First of all big thanks to Ryan (dead32) for actually 100% confirming all the parts required to fit Celsior UCF20/21 Calipers to the front of JZX90/100!

What you will need:

-Pair of UCF20/21 calipers
-Pair of 315MM UCF20/21 Rotors
-Offset nuts (to fit JZA80 caliper)
-RCA's (Roll Center Adjuster's)

This brake upgrade can be used with your stock brake lines.

The dust shield has to trimmed accordingly, could possibly run celsior dust shields if you can acquire them, but we have not tried fitting them.

RCA's are required so the caliper clears your tie-rod, lower balljoint, etc. When installing the RCA's also note that it will drop the front end of the car by approx and inch, so you will need to raise your coilovers accordingly. If you are running stock struts/lowered springs, then it is advised to upgrade to coilovers, preferably base height adjustable or your car will be slammed.

JZA80 rotors will 100% not fit in this combination, even though people have mentioned it in the past. They have been test fitted and do not work, make sure you buy UCF rotors.

Some pictures below showing the difference of stock JZX and UCF20/21 installed.

Stock JZX Front Brakes:


UCF20/21 with 9.5J +20 wheel, no clearance issues:


UCF20/21 with 9.5J +20 wheel, no clearance issues:


Offset nuts installed:


JZX vs UCF20/21 Caliper:


UCF20/21 Rotor + Caliper:


Stock JZX installed:


UCF20/21 installed:


-Isaac

[JZXjunky]

Gold!!

Nice write up guys, perhaps should become a sticky?

[Redwork]

if anyone is intrested there's some UCF disks and calipers on Trademe for $300.

[Raven]

DBA Part Numbers

Standard Vented Rotors (Front)

• DBA745 (Special Order)

Slotted Vented Rotors (Front)

• DBA745SL (Left Hand)
• DBA745SR (Right Hand)

Just adding my 2c worth for people wanting to source some new rotors.

Good work guys and seems like a reasonable upgrade.

How is the pedal feel? Have you changed the brake master cylinder to a larger item to accomodate the twin piston calipers yet?

[Chasersaurus]

this is sick! Good effort dead32 n frag!

[Tats]

Awesome work guys

Would be great to test the calipers under stock or dished rims, as opposed to Ryan's mega-concave Rotas

[S0unIQ]

Agree with Tats,
They dont look as stuck out as Supra items. Supra vs LS caliper dimension comparison would be good.

[discern]

Would be interesting to find out braking force compared to supra calipers nice work Ryan.

[discern]

Also any details on price/supply of RCA's?

[FragLord]

He used KTS RCA's they cost approx 10,000 + postage, etc.