Good to know I just decided to try the new spool.

From Tamiyablog:


Looks like the SR with the TRF420 suspension and a couple of driveshaft upgrades. I won’t upgrade from my SR but as that is discontinued I am glad Tamiya is continuing to release a tuned chassis for entry level racing.

One description says 419 arms the other 420. From pictures, they appear to be 420 arms. Issue with these arms is that the droop screw holes are on opposite side. Where as the old short reversible arms have droop screws on both sides.

Yeah, the translation is wonky. I checked the associated part number and it’s the „TRF419 suspension upgrade set“ because it is the hop-up for the TRF419. But it’s the TRF420 suspension.

you also can see it on the pictures that there are 420 or other new suspension arms and not the 419.
Imo good Idea (got a fully upgraded TT02SRR and it is a fun clubracer) but expensive.

Tamico has it listed for preorder now at €289,99 – that's 30 bucks over their price for a TA-08. I don't know if it's worth to spend that much money on a TT-02 but at least you won't have trouble finding spare chassis tubs

This my tt02 costly little thing also wanna get ssbb shocks and gt lower towers but why don't they just make a trf version lol trf tt02x


Droop plates

Long turnbuckle steering

Alloy prop and spur gear adapter

Inner camber link plates

Anti roll bars and toe plate cover

Carbon bumper plate and towers and alloy shock

This is a very nicely built TT02. 👍
If you want to use SSBB shocks, the lowered shock towers from PSM would be an option.
PSM Front SSBB GT Shock Tower, Carbon 3mm - TT02S (1) - #PS02094 | PSM (psmfactory.com)
PSM Rear Wide SSBB GT Shock Tower, Carbon 3mm - TT02S (1) - #PS02096 | PSM (psmfactory.com)

Please note that this would not work well with the Yeah Racing Anti-Roll Bar Mount (TATT-034). At least in the front the upper cap on the shockbody would hit the Anti-Roll Bar in the innermost or two innermost shock mounting positions. For SSBB the Anti-Roll Bar should better be mounted in a lower position like in this video:
https://www.youtube.com/watch?v=Jw78yWGRFAg

In my opinion, the big advantage of SSBB shocks is the possibility to use progressive springs. I prefer to use Xray 2.5-2.8 in the front or 2.3-2.6 in high grip conditions combined with 2.6 or 2.7 in the rear.

I like how you placed the weights in the bumper.

Yep found that before when I got the inner camber link plates to adjust roll center just the £100 for shocks is a bit to much to spend at the mo, when I do i will get the front tower without body post to make it look cleaner

yea was little light on the nose on weight distribution so just thought will it, not completely happy with shape of the front bumper plate but was cheap when I got the car and looks better then the( don't know why cheap aero ) kit plate

Hi with the progressive srpings what oil weight would you recommend? I trying to set my tt02sr with ssbb shocks and the psm mounts. Currenly I am using 350cst with xray linear 2.7f and 2.6r. I assume you are only using the progressive in the front? I will be running on high bite black carpet. Any recommendations for outdoor tarmac? Thank you

That's what the TB Evo series is.

but I mean on the tt02 platform that's tb platform so not what I was saying, trf tt02x not Tb evo

so keep the tub chassis start with a tt02sr or srx but add all the hop ups like ssbb shocks/towers , alloy steering, spur gear adapter,inner link plates, anti roll bars and droop stoppers that work on 420x suspension but keep all the nasty alloy suspension arms 🤮

Indoor I prefer 450cst oil on medium grip Carpet , softer in the front if the grip is really high. Mostly I use the second hole on the inside of the front shocktower, the innermost if the grip is high. I usually switch from 2.5-2.8 to 2.3-2.6 and to the flatter damper position to prevent tracktion rolling. In the rear I use the center hole or the second from the outside to keep the car stable. Furthermore, I do a lot of fine tuning by adjusting the downstop screws and adjusting the width and time I apply the tire additive, adjusting dual rate and negative steering progression on my radio. Changing the roll center via the inner mountings of the upper control arms and changing the track width through different hexes or wheel spacers also offers good options to play around with.
Sometimes progressive springs 2.5-2.8 both front and rear work well on medium grip carpet or outdoors.
On Asphalt I use 500...550 or 600cts shock oil. Mostly 600cst on hot summer days. I have two sets of Xray SLP shocks from my T4 2015 that I use with the PSM shocktowers in the TT02. For Outdoor Racing I prepere one set with the PSS sleeves to quickly feel the difference.
Furthermore I have two 3Racing Differentials. Most times one is filled with 4000cst oil and the other one with 7000cst.
I think Tamiya now provides a better option with 22049.

I just had a look at my car. With the PSM shocktowers I'm using the outer hole on the two hole side with the rear TRF416 Y-Arms to get enough upwards travel out of the shock. (I think this is the 42mm hole measure from the inner hinge pin.) The SR Manual states the inner hole (38mm) with the original shocks and shocktowers. Also I grinded away some material on the arms to clear the spring retainers. 😉