Hi guys,I see lot of people using this kind of toe links. It this a motorsport part or it is coming from street car?
Does anyone have a the part number if it is?

Thanks

 

There are quite a few reputable aftermarket companies that make rear adjustable toe links. TPC, RSS and Tarett to name a few. They all function the same. I have Demon Speed rear toe links. You should get the rear toe locking plates also.

Tarett Engineering

https://www.demonspeedmotorsports.co...ToeLkPClub.htm

https://www.tpcracing.com/product/tp...rear-toe-link/

https://roadsportsupply.com/302-rear-adjustable-toe-steer-kit-gt4-981-718/

 

I saw these,I was curious about that specific one used by manthey also.

 

Those look like TPC as they have offset bushings. They all work pretty much the same.
The TPC design decreases toe deflection up to 50% during travel (according to data from TPC). Used them in the past and worked good.
Now using the Tarett Motorsports which are very similar to the Porsche Motorsports. Those provide the most clearance if using smaller diameter wheels that are 11" wide.

 

They do not all function the same.

TPC has offset bushings to reduce bump steer.

Tarretts have a nice motorsports style pinch locking mechanism. Haven't looked in a bit, but for a while Tarett had confusing verbiage on its site for the rear toe links. The verbiage was copy paste from the front tie rods which do have alterations for bump steer improvement. <edit> checked your Tarett link, still has the confusing bump steer statement. 'Raising' the fulcrum makes no sense for the attachment of the toe link. I called Tarett about it when I was buying parts and they affirmed my suspicion about the verbiage being applicable to the front.

Some toe links will have more clearance for wheels than will others. The ball joint will be the closest suspension component to the barrel of the wheels for 19"; mine are very close with 11" wide Apex. I want to say about 5mm clearance.

Full disclosure: I'm running TPC for my rear toe links, Tarett for monoballs, front tie rods, caster pucks, OEM clubsport for front camber plates.

 

Watching this thread for updates, wanting to understand the offset end to correct bump steer. I am familiar with the bump steer phenomena on the front where the steering tie rod end can be adjusted to correct it based on changes of ride height, track with etc where the goal often is to match the tie rod end angle to either horizontal or to match the lower arm angle, whatever decreases bump steer.

On the 718 chassis the rear links bolt in horizontally and from the pictures I have seen the adjustable link end seems to be at the hub. Is this most needed for standard height, lowered cars or can all benefit?

Thanks,
Jeremy

 

@j-dub the offset for the TPC is on the inside, not at the hub.

 

The question is, can you feel a difference from running the TPC ones versus the Tarett Motorsport ones if one is running -2.2 mm per side.

I went with the Tarett motorsport ones as that is what my race shop recommended because of its locking mechanism, but I often wonder if I would feel a difference by swapping to the TPC ones. I don't mind running -2.2mm per side on the toe, as my tire wear is pretty even with my camber settings, so that isn't an issue. Just wonder if there is any performance and/or stability to be gained with the TPC ones with my current aggressive toe settings

 

I have had the Tarrett, I now have the RSS with locking plates. They are essentially all functionally the same with some minor differences.

 

It depends on the driving. If your driving involves speeds that exceed 100+mph and then hard braking in the shortest distance possible approaching a turn, such as track driving, then the rear end stability is noticeable, with all other factors being equal.

 

FWIW, we used the TPC ones on my car. With the offset bushings, even on install, both my mechanic and myself had an "ooooh!" moment where just looking at them, you can see they are much more inline with the suspension. Above my pay grade, but not sure why it wasn't like this from the factory.

 

I use the TPC rear toe links and am very happy with them.

 

Thanks @enduro

I see now, on the TPC website the GT4 links have the offset on the inside where the GTS links have no offset on the inside link. The GTS links really look to be adjustable with shims on the hub side of the link.

@Tom@TPC Racing When time allows would you mind explaining the difference between the GT4 VS GTS rear hubs and design considerations on your toe links?

Thanks,
Jeremy

 

Offset for the TPC GT4 rear toe link is on the inside because there's no room to offset on the outside on a GT4 with the wheel being too close.

Cayman/S/GTS is offset on the outside with the wheel being farther away by the design of the rear uprights.

 

Thanks @Tom@TPC Racing for the detailed explanation and picture.