54965, it’s designed for the Type S/SR/SRX. Don’t think it will work on the standard suspension

https://www.tamiyausa.com/shop/optio...-steering-set/

Yes it works great

I had the Type SR steering bridge on my standard TT02 for a bit. While I loved the "less slop" it was a bit fragile with hits from the front corners.
My bridge that goes over the front gear box was ever so slightly bent when I got hit by a less experience driver and when turning it would ever so slightly get stuck on the gearbox.

lol of course in practice last night i snapped a steering knuckle (and i ordered in 12mm screws yesterday too haha) i did have a thought though if i should drill out the hole so i can put a longer screw that goes right to the inner diameter of the knuckle opening. so i can put like a 14mm screw in

That's what I did. I used a reamer to make the hole deeper and put a longer screw in to make it more solid. I've been on the same knuckles for 4 years.

I had the same issue with on the SR… it was touching the gearbox. I kept tinkering to see what I did wrong in the installation. No success so I ended up cutting away a bit of the plastic to make it clear. So it’s not limited to the normal TT suspension.

Will be running the Raikiri GT body on my SRX for my club.

Bro honestly that's the cleanest Raikiri body I have seen. Super pretty.

Sorry not reamer. Thread former from Tamiya.

Looks like someone has been paying attention to the posts on here ...LOL

TCS National Finals is running the spec 17.5 HobbyWing Justock in GT ProSpec class. Cars will only use one of the two Porsche 992 bodies (51705 or 51752), car must be configured with short 251mm wheelbase and the HobbyWing Justock G3S ESC will have to have the RPM limit set (TBD). Rest of GT ProSpec rules apply. This eliminates the few folks that have the lightweight Mustang or Mercedes bodies and the car will have the motor to make better use of the limited gearing in the TT-02.

I don’t get why change the motor from 21.5 to 17.5 and then set a limited RPM.

To increase peak torque without increasing top speed. Normally decreasing the electrical resistance of the motor by having shorter windings would increase both torque and top speed, at the expense of greater heat buildup and lower power efficiency when accelerating.

Probably as simple as the next level of specifying the class.

The GT ProSpec class used to have no weight rule and no motor timing specs so most fast guys had their cars down to low 1200's in grams and the Reedy Sonic motors cranked up to 56-58* of timing for a KV rating of around 2650-2750. Cars were fast and fun to drive but the lack of rules just pushed guys to press harder. One day you're faster and next week they come back with a higher timed motor and now they're faster. In a class with such a high spec FDR its all a motor game.

With the new timing rules in effect (46.0* per HobbyWing) the 21.5 motors are turning a much lower KV (maybe 2200-2300), add the minimum 1400g weight rule and these cars are now sluggish and slow. By going to the 17.5 you get the KV back up but then limiting the RPMs via the ESC gives Tamiya the control to set the pace of these cars based on the event/track size. ETS series in Europe has shown great success now running the HobbyWing platforms (Justock Motor/ESCs in lower classes, and higher end 100a ESC and G4 motors in the expert stock classes) and setting different RPM caps based on chassis (Fwd, TC, F1). With the RPM limit, its very easy to tech and completely levels the playing field top speed wise.

Fred has clarified that the 17.5 is just for nationals and the 21.5 is still the standard motor for 2026 regionals. The choice of 17.5 for nats is due to the long straight at SCOR.