Hi there, i looked around the forum and found very little info comparing these two arms. I am debating between the two so if anyone has experience with both, your input would be greatly appreciated. im not tracking, but i want something that wont give me any problems. so quality and reliability and noise is my main concern.

Thanks guys

 

Heard the SPL's have more camber and caster correction than the cusco.

 

also thmotorsports told me he's has seen the cusco snap countless of times. i wondered if anyone has experienced this as well.

thanks agian

 

They both (Cusco & SPL) are fine adjustable upper controll arms. I personally prefer the SPL arms, but thats just me. I like the way they adjust and seem to have a better adjusting mechinism. SPL also has the upper hand in customer support.

And yes, I have experience with both

I also have both for sale (new and used) PM if interested.

 

We have sold more of these than ANY other shop in the country....maybe even worldwide. I've run a set for 2 years on my own car....and have never had a single failure, peep, creak, or noise of any kind from mine. We're talking track days, street use (NY roads), 18 inch wheels, 19 inch wheels, on a 2 inch drop, over cavernous potholes....you name it, I've put them through their paces. At worst, we've had a couple isolated incidents where the dust boot tore, causing dirt and grit to get into the balljoint, which is why we are going to be stocking them in the future (as soon as they come off backorder)...so people won't have to buy a complete new set in the rare instance that the ball joint needs replacing.

Customer support wise, guess its all in who you deal with...I have never had a single issue, with the guys at Cusco USA and Cusco Japan going out of their way for us.

 

I asked if anyone experienced there cusco arms failing, not a sales pitch.

you keep telling me how your the #1 seller in the US for cusco. thats twice now. knock it off.

 

hahah....i'm buying the SPL's from wa2good....i've never heard of any problems with the cusco's though...

 

And you keep asking the same questions over and over....should I tell you to knock it off? Might want to have that major chip on your shoulder looked at, it seems to be bogging you down.

This is a FORUM...so guess what, OTHER people read your questions and responses, it's not a vaccum. As such, if I see something posted about a product we offer or have experience with, I share it. So I guess my experience, and level of expertise when it comes to suspension setup on these cars is now automatically a sales pitch because I happen to sell parts...ok. Ask anyone who knows me on here, or read my posts from the past on many products - I share the info I know regardless if you buy it from me or not.

I posted my experience with them, as I happen to be the first person who ever had these on a car in the US, and I probably drive more than virtually anyone else here, and certainly, after 2 years of use, know what they can and can't endure.

 

Just get the cheapes one that will give you enough camber correction you want.

I have the race-spec SPL arms and love them. Adjusting them is very easy. Plus they give caster adjustability to. Not sure if the Cusco offer that?

 

no the Cusco ones do not offer a caster provision

 

ive been using the cusco now for several months. i cant imagine them "snapping off". id like to see someone offer evidence of it happening.. if it was a common occurance... there would be countless stories on this board, after all tons of people here use them! the cusco's are built stout and if there isnt enough adjustment for your particular car there is a simple mod for that. the SPL's are certainly prettier and look very well made but the cusco is a very good product.

 

I had a bad personal experience with the camber adjustment bolts backing out of the Cuscos I had in my 350Z. There was one left in each arm by the time we caught the problem. I have since switched to the SPL and love them.

 

I remember you asking me about this once...def odd, as I've never seen it before.

All I can say is make absolutely sure you torque the bolts down to spec when they are aligned. I don't even use thread lock on mine, but it can be good to use as well

 

^^^Yeah, agreed. I also beat the living crap out of my car though too lol.

 

I have the cusco's and they don't back out...and they are very very QUIET!!!!!

I have no noise from my suspension setup whatsoever!!!!

 

First - I have absolutely no experience with Cusco parts, so don't take this as a negative comment about them. This is a general comment about quality.

Someone said they had a Cusco arm break. Someone else said they've never had problems with theirs. Bad quality assurance could let this happen - some product ends up perfect, while some ends up defective or weak. It's not the same as saying "all Cusco arms are weak". The important thing is the percentage of defective product sent to customers. If it's too high, that's bad. Again, I'm not saying Cusco is good or bad, but that one person saying "mine broke", or one person saying "mine didn't break" means nothing. You need a large enough sample to be statistically meaningful. A sample of, say, 20 units minimum (hopefully much more). In a web forum environment, it's hard, simply because people are full of crap sometimes.

Personally, what I do is if I see a lot of people saying they had part X fail, then I might avoid that part, and look for the part from other companies with the fewest failures. Or I might look for an acknowledgement from the manufacturer, "yes, we had a weak bracket, and we've fixed it and sent out replacements to existing customers for free or cheap".

Now my experience. The SPL camber arms came highly recommended from several 350Z owners at the track, including an instructor. I also met Kuah from SPL at the track, and talked to him a bit. I happen to be in Austin, so I went and bought the camber arms in person. The package I got included the arms, wrapped in plastic, packed well, etc. The quality was great, it even included a nice adjustment tool. I installed the arms myself, the instructions were clear, and the install went great (that is, they actually fit, which doesn't always happen with aftermarket parts). I had the car aligned at Soulspeed, with 2 degrees negative camber. I took the car out on the road and the results were great.

Another reason I like SPL is, when they discovered there might be a possible knocking problem, they sent out free updates to owners, the thread is here: https://my350z.com/forum/showthread....&highlight=g35

Any company that will do this is a stand-up company in my view, and I'll give them any business I can.

 

+1 well put.

 

I had originally posted the total # of arms we've sold and the # we've gotten back with issues (0), but ended up condensing my post into what I wrote to make it more general.

Annecdotal as it might be, the worst thing I've ever had to do to date is order a single replacement ball jpoint for one single customer...out of all the arms we've ever sold, or Cusco USA has ever sold.

I just don't like seeing the heresay stuff...it does not do anyone any good

 

so who sells SPL (front/rear)at the best shipped price??

 

I think you may be able to order from SPL parts directly, or here is their dealer page:

http://www.splparts.com/About/dealers.htm