I put these together the other day after deciding I wanted to do a rear disc brake swap. I hope these help anyone else considering doing it this way on a USDM GE8.

 

 

 

 

 

Hi hondacivic90ed,
I will try to push them to get your JDM rear axle shipped sooner from Japan
so you can install them in your car asap...
cause I don't know when I will be able to install mine hahaha

by the way, the Japanese brake master cylinder above have the same 3/4in diameter as our USDM car, the different is only because they are RHD so their outlet point to different direction then our (outlet that connect to hard brake line).

if after installing your rear JDM rear axle,
you wish to improve with larger brake master cylinder,
I suggest this brake master cylinder part# 46100-SNW-J01
it's a 1in diameter Civic (FD2) Type R

and here is the link to the picture: (I try to put the picture here directly,
but it won't do it, so I have to use a link):
http://www.supergt.com.hk/full/ENHAFD2010.jpg

of course you still have to modify the hard brake line from this master cylinder to the VSA unit.

 

I called EBC Brakes today to see if they could get their hands on the rear pads or rotors. I spoke with someone named "Will" and he said that the rear pads are something they stock so obviously it is a cross to something else Honda related, but the rotors were specific only to the Fit/Jazz so he is going to find out if they would be willing to import them or not. I have to call him back Wednesday at 3pm EST to find out what their answer is. If I can't get them through EBC I may use either the Japanese or European EPC catalogue and get oem rotors. This is all assuming that the rotors that come with the JDM rear axle aren't salvageable. I have a Hunter brake lathe in my garage so as long as they won't be under 8mm I can always turn them, though I usually have an unwritten rule not to turn solid rear disc brakes just because they are so thin to begin with, I guess I'll have to see what I end up with when the axle arrives.

BMW ALPINA, thank you for your help in procuring the JDM rear axle. I'm anxiously awaiting any and all status updates on its progress. It will be installed as soon as I have all the t's crossed and i's dotted as far as the components for the brake swap. I'm looking at getting the Wilwood front calipers and painting the rear calipers black to match them.

 

Hi hondacivic90ed,
I am pretty sure you will still be able to use the Rear Disk Rotor that going to came with this JDM rear axle, because the car it came from are brand new car, at least my rotor are still in like new condition, when I measure it, it still 9mm (like new thickness).
but if you want to upgrade,
the easy thing is to buy Mugen Rear Rotor from Rakuten Japan.

Here is the Part Number for the REAR Mugen Brake Rotor:
43250-XLF -K0S0
Price around 23,000 yen
Rakuten: 43250-XLF -K0S0 - Shopping Japanese products from Japan
The front one are slotted, but so far I had not found the picture of the rear one, but I guess it will be slotted too






Here is for Type S "SPORT" type REAR brake pad (Mugen):
43022-XLF -K000 (price lower then 21,000 yen)
Rakuten: 43022-XLF -K000 - Shopping Japanese products from Japan






Here is for Type T "TOURING" type REAR brake pad (Mugen):
43022-XK7D-K000 (price lower then 13,000 yen)
Rakuten: 43022-XK7D-K000 - Shopping Japanese products from Japan



Have you ever buy from Rakuten and ship it use Tenso?
if not, just email me, and I will explain to you step by step.
Pretty easy

you can also use Yahoo Japan Auction but buy it using Buyee (subsidiary of Tenso).

Another place to buy is Amazon Japan, and ship it using Tenso.

All the 3 place above have this Mugen rotor and pads available

 

Nice work on finding that info and posting it here for everybody to see.

 

Damn im late to the party again.

 

I check with my friend's staff in Tokyo,
and he said, the JDM Rear Axle with Disk Brake that he got for hondacivic90ed,
were the last one they had it stock, and they might not get any more,
so if this is correct, and since other place also had run out of stock,
(stock for rear axle in Brand New condition that had been a victim of FRESH flood water in Thailand Honda factory)
this mean there will be only 2 car in US with a JDM Rear Axle with Disk Brake conversion,
(unless someone want to buy a brand new rear axle & all related parts )
so the
first car will be hondacivic90ed's car in East Coast,
and second car is my car in West Coast

and both car are Taffeta White !

the problem is I don't know when I can finish my installation,
so I think, hondacivic90ed will be the first ever Honda Fit GE running
on US road with this conversion...

oh by the way, the rear axle for hondacivic90ed had arrive at my friend's Tokyo warehouse about 8 hours ago. Hopefully they can shipped it soon to LA

 

So i got a look at the 4wd GE fits and its a beam axle setup, that's got to be weird.

http://www.ebay.com/itm/HONDA-FIT-2012-R-Axle-Beam-Suspension-Assembly-1053500-/310673564947?pt=Motors_Car_Truck_Parts_Accessories&hash=item4855966513&vxp=mtr

 

Last weekend, I done some checking and turn out the only model that have both Disk Brake and Internal Sway Bar combo at the same time is only either the RS or RS Hybrid model.

other might have sway bar but no disk brake.
while,
The 4wd model do not have disk brakes and don't have internal sway bar.
The 4wd rear axle is called "de dion formula" (I know this after translate the Honda Japan Spec for GE website with google chrome)

I think they don't want sway bar for 4wd so the rear axle will be more flexible on the rough road and thus provide extra traction on rough road... but this also mean the inherent handling on normal road/highway will not be good, especially with the extra burden of a rear differential on the rear axle...

here is the Honda of Japan official spec website for Honda Fit :
�«”\ | ƒtƒBƒbƒg | Honda

note: use Google chrome is recommended so you can translate all the Japanese word into English seamlessly

 

I just ordered a CUSTOM Rear Rotor from Coleman Racing:

Brake Rotor, 1/4 / 1/2, Custom, Solid Mount

I was planning to buy TheBrakeMan scalloped 12.19in diameter rotor,
but their thickness is 0.375in and I check that the JDM RS Rear Caliper only accept up to 9mm or 0.354in in thickness, beside they are still in back orders and they are made from STEEL not IRON.

My second back up was Wilwood 12.19in diameter scalloped rotor or their cross drilled "super alloy" with 11.44 in diameter,
but Wilwood email me saying both of those rotor are NOT intended for street use, because those are either Steel or Stainless Steel (super alloy),
and Wilwood do NOT produce Cast Iron rotor...

after several research, I found that HRP and Coleman Racing accept custom order for SOLID (NON VENTED) Cast IRON rotor,
so I email them both and HRP never reply to me,
but Coleman Racing are very responsive,
and I ordered my custom cast iron rotor with them.

It going to be 12in in diameter with all the flange designed to fit the Wilwood Hat that I already bought.

My rotor also going to be receiving optional Heat Treatment for "STRESS RELIEVE" to prevent further from Wrapping.

What even better is they can do Custom Slotting (Gas Vent),
so I want my design to be SIMILAR to Brembo Type 3

This is the picture of a Brembo Type 3:

 

Great news !!!

 

last few days too tired to install this, hopefully tomorrow




after this, the only thing missing from my plan for suspension is the Cusco 4 point subframe bar.

 

I spoke with "Will" at EBC brakes yesterday and he explained that EBC is going to import a few sets of the rear rotors. These are pretty much oem style replacement rotors so nothing spectacularly special but the good thing is that since I requested them to import, they are now making a U.S. part number that will be able to be special ordered. I am supposed to contact someone named "Brendon" on Monday June 24th to arrange a local rep to be the liason between EBC and myself so that I can special order them as they won't be a normal part number and the situation will be explained to the rep so that I can get them coming. I have also reached out to a friend of mine through work that is in our UK office to see what and how difficult it would be to acquire factory rotors and pads from Honda in the UK. I'll update when he gets back to me on pricing and possible shipping quotes.

 

Ok,

so yesterday evening, I went for dinner at a place about 30 miles from my home,
so I took several different route/freeway both on the way to and on the way back.

and here is my impression after installing the Progress Rear Sway Bar.

Please take note that my experience is with my car who already have Bilstein Coil Over and Spoon Front Sway Bar, so for people with standard shocks or people with just lowering springs only or for people with coil over but without Spoon front sway bar, your result might be different than mine.


Now, when I just install the Bilstein without the Spoon Front Sway bar,
the ride is very comfortable but still firm and I love it.
This feel like a ride in BMW Alpina or Mercedes AMG

When I install the Spoon Front Sway bar on top of the Bilstein,
the sway were almost completely eliminated but the ride also firm up,
which make the ride more like BMW M Series

Now after the Progress Rear Sway bar,
Any sway at the rear suspension is virtually gone,
but now I can feel that the front still have very little sway.
What amazing is the VERTICAL movement of the car (up and down suspension travel) were much less compare to before Progress,
so on high speed at FreeWay, the car just feel completely level with
almost no up and down movement even if the freeway is not really flat.
I feel like the car is just planted.

Now the thing that I do NOT like is, the car is now so much more responsive to very slight steering input,
this mean at high speed , the car can move side to side very easily
with the smallest steering movement.
I mean this is good for a tight corner at small racing circuit,
but for high speed stability, this mean I had to concentrate more.

Yes, the car now became easier to turn in (more oversteer),
but I would prefer the car to have less sensitivity...
This Progress rear sway bar make the rear so much more rigid,
this effect now became obvious...

The ride comfort at the back change too... it is now even more firm then just bilstein, but this is still OK, it is not harsh.

If I would do this again,
I probably just install Bilstein and Spoon Front Sway Bar to eliminate body roll.
but since I already bought this Progress rear sway bar,... well, I guess I am not going to take it off and just calibrate my driving style to suit it

so there is plus and minus that came with this Progress Rear Sway bar for my preference and my car suspension spec.

 

Good review!

I'm wondering now how your combination would feel with the non-RS rear trailing arm (w/o the factory RSB)... if I ever decide to do the rear disc swap.

I already think the car is a little twitchy at high speeds with 205's... based on your review, it would be more so.

Thinking just the Bilsteins alone would do what I need.

 

Thorough review. I don't have the rsb and fsb but I can already feel the sensitivity of the steering wheel.