[Jaymaal904]

The options snippet above doesn't mention 4-channel. It simply refers to ABS. I would highly doubt that Toyota gave an option for how many channel buyers wanted their ABS system to have.

I've always been told that outside of the RZ all S2 Supra's received a 3-channel system. This has been confirmed by my real world findings. I could be wrong but I've never seen a S2 Supra with 4-channel ABS that wasn't an RZ.

My 97 S2 SZ-R has 4 channel ABS. It's the only S2 SZ-R or SZ that I've seen in my time in Japan to have 4 channel. Most have the 3 channel. Easy to tell by looking at the amount of brake lines on the ABS modules.

 

[iwantablackRZ]

My 97 S2 SZ-R has 4 channel ABS. It's the only S2 SZ-R or SZ that I've seen in my time in Japan to have 4 channel. Most have the 3 channel. Easy to tell by looking at the amount of brake lines on the ABS modules.

Fascinating. So many variables with these cars.

I had a look through all my JDM brochures and all of my collection is mostly S1. The little bit of S2 stuff I have makes no point of mentioning whether the ABS is 3 channel or 4.

 

[cdmeister]

Jdm Supra are really cool with all these crazy options.

 

[te72]

Being in the US and limited to our so-called '25 year law' I've seen exactly one S2 SZ Supra in my entire life (Canadian registered '97 SZ-R 6MT at Supras in Vegas some years back).

You talking about this car?

 

[Wreckless]

You talking about this car?

View attachment 286667

Same white paint and same wheels - last name rings a bell too (A simply fantastic human being owns that Supra!) But the livery was substantially different when I last saw it

 

[te72]

Same white paint and same wheels - last name rings a bell too (A simply fantastic human being owns that Supra!) But the livery was substantially different when I last saw it

That is indeed the same car. We met Mark the year prior to the "hands" livery, and the year this shot was taken, we road tripped together, along with Skip. Funny enough I think both Skip's and our Mk3 are in the background of your shot there, under the T-mobile sign.

Mark is definitely a fantastic human being. We have done three Vegas trips with him (and his son Jake), in 2017, 18, and 19. The shot I posted was from 2018, when Megan got her Mk4. 2019 was the year Megan and I brought both Supras, Mark and Jake flew down from Canada and drove the Mk4, Megan and I in the Mk3. Easily our favorite road trip ever.

That's where this happened...

Turns out, Vermilion Cliffs isn't a scenic overlook like Google would have you believe, it's more of a 280,000 acre national monument... we must have driven ten miles down this dirt road before car troubles and a friendly fellow motorist let us know what was ahead on our path convinced us to turn around.

 

[RdS]

Regarding the different ABS setups fitted to 9605- facelift Japanese Supras:
The same staggered 17" wheels, 4+2 piston big brakes and more complex 'Sports' ABS were available as a package on all trim levels. Standard on an RZ, but almost as common to see on a NA+auto SZ as it is on a turbo+6spd RZ-S.
I've seen many turbo cars later modified to have the larger brakes, but the brake lines in the engine bay will always be the tell.
Here's two examples from current Goo-Net Japanese dealer listings:

You can clearly see the difference with the brake lines. Although both original turbo, 6spd cars, only the white car has the higher-spec ABS system, 17" wheels and big brake option.

Here again with some NA cars:

Again, coincidentally, only the white car has the higher-spec ABS system, 17" wheels and big brakes.

...and on a heavily-optioned NA auto:

Toyota EPC drawings showing more of the difference between the standard ABS and optional 'Sports' ABS systems:

Here we can see the additional brake line running to the rear wheels, among other things. The EPC also shows this system had a larger master cylinder and different booster:

All interesting stuff.
Japanese-market Supras are certainly a mixed bag. With almost everything optional across the range and no outward badging otherwise, the trim levels in the brochure are little more than option bundles. You simply would not be able to pick the drivetrain of a Japanese Supra at a glance.

Hopefully this all works anyway. Sadly it's been a few years now since I've had to post images on a forum!