rx74evers

iTrader: (6)

Wondering if anyone has used J-auto rear lowering Links and Trailing arm kit for track use. Or the Powerflex bushing are just as good with the stock links.

rx74evers

iTrader: (6)

Anyone?

Brekyrself

iTrader: (30)

The J-auto links have not been out very long, thus feed back on those will be limited.

With how small the bushings are on the toe links and arms, I choose to stick with powerflex bushings instead of aftermarket arms with bearings. I'm not looking for the last tenth of a second during HPDE's I prefer to have a little compliance since its also driven on the street. Powerflex bushings are also a lot cheaper vs swapping out arms.

rx74evers

iTrader: (6)

Very true! But how about the trailing arms are those the weak link? Or are they just as strong after upgrading with powerflex bushings for track use.

Brekyrself

iTrader: (30)

I'm not sure there is a weak link once changing out the bushings. Some will say aftermarket links provide more room for wider wheels however I have not had them in hand to compare side by side. I run 18x9.5 +45 with 285/30/18's in the rear with stock arms by the way.

Juan

iTrader: (28)

Powerflex bushings on the stock arms are a good upgrade that wont break the bank. This is a good route for people who drive their FD's on the street but go to a track day here and there. On the other hand, the control arm upgrade is for FD's that need a stronger, solid rear end that can be adjusted beyond what the factory adjustments offer. These cars tend to be drift and time attack cars which are tougher on suspension but also include lowered "stance" cars which require more camber adjustment. I run these on my dual purpose FD and have been very happy with their performance, especially on the street. They're very quiet and clunk free due to the high quality 3 piece, teflon injected spherical bearings used. I'd say the noise levels are about the same as with polyurethane bushings on the lower control arm and trailing arm. I also have our toe links and polyurethane bushings on the rest of the car.

It's hard to convey how strong these arms are through pictures but I assure you guys that these are plenty strong. The rod ends and bearings we use are very strong and are not cheapie bottom of the barrel parts. You'll need to hit something very hard for these to fail. In this situation, you'll have bigger things to worry about than a bent control arm. A local Porsche cup car builder uses the same exact rod ends, bearings and materials on their race car and street car builds as we do on our products.



These specific FD arms are fairly new to the market but the components that make up these arms have been used for many many years on other platforms (Porsches, S13, S14, AE86, FC, etc) with great results. Theres a few guys running these arms right now on their FD's but they're not forum members. These FD's include serious competitive drift and track/time attack cars along with street cars. So far the feedback from these guys has been positive.

I run the prototype of these arms on my dual purpose FD (pictured below) without any issue. The current arms we sell are a revised version of the arms on my car which feature larger rod ends and bearings for added strength. The prototype wasnt weak at all but there was room for larger rod ends and bearings. The design was upgraded to take advantage of the available space and in the process, was made stronger. Locals who've held these arms, were surprised at how beefy they are compared to what the pictures led them to believe.



These arms are in stock, ready to ship and can be purchased through my website www.j-auto.net.

Copeland

iTrader: (42)

I've been running SuperPro bushings in both my stock trailing arms and toe links. It beefened up my rear end and got rid of a lot of slop, it made my car feel new again. I later upgraded the rear pillowballs with stock replacement units and was blown away again with how much of a difference it made. The car drove completely different and was PLANTED in turns, no more guessing if it was about to fishtail. Now I just bought both the front and rear control arm bushings from J-auto and will be replacing those coming in the next few weeks. I'm stoked to see what difference it makes!