The spacer is very small and will not affect caliper clearance as it spaces everything out accordingly. The amount is very small and has been tested by SPC so you shouldn't have any issues. What the spacer will do is induce a large amount of positive camber and the upper arm will pull the wheel back in to specs. Once the spacer is installed, you will not have to mess with it again. All of the adjustment is performed from the upper arm. Both camber and caster adjustment.

Please PM me if you have any further questions or don't hesitate to call.

 

will watch this space...


I have a few questions. Is the material that these arms are made of steel, if so do I need to to increase the unsprung weight of the upper control arm?

Also, what type of actual testing was done to assure that the physical strength is there to take the abuse of sticky tires and high cornering loads on the track. I use my Z for HPDE.

Thanks.

Pamela

 

?

 

Pamela,

I do not have the comparison of the weight of these to the weight of the factory arms. If someone on this board can PM me the weight of the factory arms (someone who has already replaced them), I can then compare them to the weight of the SPC arms. Yes, they are steel.

As for testing, I know that SPC has installed these on vehicles that were driven to test for alignment and clearance issues. As for track testing, I am not sure as to the extent of track testing but can find out. I will PM you as I have a question for you.

 

I'm really looking forward to getting this kit on my car.

I'll take pics and do a writeup too.

 

I'm interested in this also. I have the stoptech bbk coming in.

 

The spacers will move all items the same amount so you shouldn't have any issues with clearance. This info has been specified by SPC's design engineers.

 

I would also like to know if these will hold up to track use. Wouldn't want the ball joint to slip in the middle of a session. I'm definitely interested in these since these would be a lot easier to adjust for track days versus my current Cusco A-arms.

 

You shouldn't have any issues with the balljoint. This type of kit has been used for many, many years without any issues. The same type of balljoint is also used on the aluminum arms SPC offers for Honda/Acura track vehicles and I have never had/heard of any complaints with them.

Guys, keep in mind that SPC has been around for over 30 years and specializes in the alignment industry. They manufacture kits for Eibach (all of them) and supply auto companies like Ford, Chevrolet, Dodge with kits used on factory vehicles. This is no "fly by night" company.

I hope this eases your mind a bit.

 

Ok, everyone I just received the most recent update from SPC and its both good and bad. The bad news is that they had a tooling correction to be made that was not performed as scheduled by the factory. This pushed the schedule back 6 weeks. The good news is that they are going to pay for expedited processing of our (IAP) order which will push delivery up 2 full weeks. Therefore, the new eta is 1st week of October. That is going to be for the first batch only which is going to be even smaller than expected. If you know of anyone else that wanted to get in on the first order, they need to order as soon as possible.

 

Brutal i wont even have the car anymore by the time these come out lol

 

Please excuse my laziness, but I diddn't feel like re-reading all 8 pages of this thread.

What is the $$?

Thanks

 

Your laziness is not excused as the answer could be found on page 7.

But since I'm such a nice guy...

https://my350z.com/forum/showthread....54#post2661554

 

Weighed the stock a arms today using the old bathroom scale method. Including the box they were in, it came out to be about 7.5 lbs. I see that the shipping weight of these SPC arms are 16 lbs so they're roughly double of the stock arms and thus unsprung weight goes up. Any reason why the SPC arms weren't made of aluminum? Cost?

 

I forgot to weigh the SPC's before I installed them. I need to post up the pics of my install. They're nothing special though. It's a pretty straightforward install.

 

Any difficulty with adding the spacers behind the hub and caliper? Please post pix of install!

 

I didn't install the spacers behind the hub.

I'm lowered on 350z S Techs and there was no problem getting he alignment within specs. The car isn't super low.

 

As for weight, please weigh them without a box or anything and pm that to me. I will get an actual weight of the arms without the box as well so we can compare.

 

****UPDATE: THE KITS ARRIVED TO SPC ON THURSDAY AND SHIPPED OUT TO US ON FRIDAY!!! Since this is a very large shipment, it shipped to us via truck freight (Yellow Freight Company). When I tracked the shipment, it showed a Friday delivery date. We will do our absolute best to get this shipment broken down and shipped back out to you the same day and tracking numbers will be provided.

We only have a handful left for sale on the batch coming in. If you know of anyone waiting on these, now is the time to order as I currently do not have a specific ETA on the next batch.

Thanks for hanging in there guys. Let me know if you have any questions. ***

 

I just posted my review of the SPC A-arms and their installation. Here is the link.
https://my350z.com/forum/brakes-and-suspension/222858-my-spc-a-arm-installation.html