Good stuff. The TT-02R and other variants are pretty capable once you chase down the gremlins and "un-crap" the setup. I found it pretty accepting of setup changes etc.

I'm late to the TT-02 game, looking for help on the build. Do I use rubber cement where arms go into chassis? I'm trying to shim some of the slop out of the arms but the drivetrain had a ton of slop around the spur gear, is that normal? It seems I will also be rebuilding the gear diff as well as that isn't very smooth either. Any tips would be great! TIA

No rubber cement!! To get the play out use shim kits.. they come in varying width of 0.1, 0.2, 0.3.

https://www.tqrcracing.com/shop/prod....asp?p_id=1809

https://www.tqrcracing.com/shop/prod...w.asp?p_id=623

https://www.tqrcracing.com/shop/prod...w.asp?p_id=622

Has anyone tried the new (42353) SSBB dampers with the (54947) v2 carbon shock stays (towers)? Is this a direct fit on my SRX? Thanks in advance!

The Tamiya TT-02 S/SR/SRX kits use different Carbon Damper Stay (Shock Towers) as compared to the stock TT-02/R/RR kits (Item 54947). Item 54947 is designed for the plastic upper arms on the basic TT-02 kits. Please refer to this link on Tamiya's website showing how Item 54947 is used...
https://www.tamiyausa.com/shop/optio...amper-stay-ii/

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Below are the carbon fiber parts you need from Tamiya for the TT-02 S/SR/SRX kits.

Tamiya Item# 54632 RC Carbon Damper Stay Front TT02 Type-S
https://www.tamiyausa.com/shop/optio...-stay-front-3/

Tamiya Item# 54633 RC Carbon Damper Stay Rear TT02 Type-S
https://www.tamiyausa.com/shop/optio...per-stay-rear/

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I have not personally used the SSBB shocks on any of my TT-02 S kits, but here is a link the THERCRACER.com website where he has used the Tamiya SSBB shocks on his kit. While their car is not specifically an SRX kit, it is using the same lower suspension arms. Also note that THE RC RACER used (2) front shock towers mounted upside-down to accommodate the shorter length of the shocks. Here is the link...
https://www.thercracer.com/2020/03/u...02-type-s.html

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Note: There are several aftermarket carbon fiber shock towers available that are less expensive than the official Tamiya parts, but I have never used any so cannot vouch for the quality.

I’m looking for assistance locating this part, not sure why it’s not easier to locate.

19804940 tamiya
MB11 Ballstud

Thanks,
Chris

Looking through the Tamiya TT-02 SRX manual, the part are asking about (19804940) is a Tamiya short 5mm ball connector nut and appears to be the same as Tamiya item# 42323
https://www.tamiyausa.com/shop/alumt...onnector-nuts/

It looks like that part is out of stock on TamiyaUSA's website. However, I bet you couldn't find part# 19804940 on TamiyaUSA's website. That is because Tamiya part numbers are usually listed as a 5, 7, or 8 digit number. So to find that particular part on their website, drop the 1st digit (1 in this case) and search for 9804940. Here is a link to a reference site confirming this information...
https://www.tamiyabase.com/parts/15086-19804940

It looks like you can buy this part directly on TamiyaUSA's website here...
https://www.tamiyausa.com/shop/7-dig...tor-nut-42301/

I was able to find part# 42323 at TQRACING (directly and thru Amazon 3/6/2025) here are some links...
https://www.tqrcracing.com/shop/prod..._keyword=42323

Which TRF dampers are the current go-to for a standard TT02 (non-s)? It looks like maybe the 42102, is that correct? They’re for an asphalt Porsche cup car, so will be looking for ~5mm ride height and wanting to make sure I get the right length shocks. Thanks!

What parts are required to run on the rear for the active toe?

Check out this article on TheRcRacer website, which includes photos & parts/#'s used for the mod...

https://www.thercracer.com/2022/07/t...trol-rear.html

They added active rear steer to a stock TT-02, but did admit in their review that any improvements could be simply because the mod had more rear toe than a stock TT-02.

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TheRcRacer also added active rear toe on a TT-02-S kit (but it should work the same on an S/SR/SRX) kit. Here is a link to that article showing pictures and parts used...

https://www.thercracer.com/2020/03/u...02-type-s.html

is it better to use a shorty battery pack to race with ?
do you move it to ward the front or rear. carpet track stock motor?

I suppose it all depends on how you define "better". Using a shorty lipo should reduce the car's overall weight and another advantage is that the space not used by a standard lipo can then be used to place electronics like ESC or receiver to ensure everything is as low as possible in the chassis. The lower the better. You can also move the battery wherever you like, front to back, using spacers that can easily be made from simple Styrofoam blocks (or whatever) of various widths to tune how your car handles.

Yeah Racing sells an aluminum shorty battery pack kit in blue and red that uses a large O-ring to secure the battery that looks nice. I've often found that the aluminum bits are heavier than the stock plastic ones, but in this case you're likely OK. Another option I found was a seller on Etsy who has a 3D printed kit to accommodate a shorty pack. Looks nice and should be light weight too.

Might be worth a try.

I ran mine with a shorty pack in parking lot series and rally class on carpet and it drove well. But, my friend who is a far better driver than me runs a low profile full size pack on carpet.

That is the biggest question. It's all dependent on what you want from your TT02.
Some like the shorty for lighter weight, I personally like the stick pack from Protek 5000mah LiHV for better weight balance.
I tried a shorty, a heavier brick style lipo and my Protek and personally I feel the extra weight balances out the chassis for better left and right. Try each and see what your preference is.

Has to have wires and a plug to be legal everywhere Ive been.

I use the Protek Mudboss stick lipo.