I do lot of autocross in street of willow(willow spring, CA)
Are those 4 point underbody lower H brace really work? I just dont want to buy sumthin just for look and no function at all.

Any suggestion?

Thank you

 

It all depends on where you mount them to. And also what suspention bracing you already have done.

 

it will stiffen the chassis.

its not a suspension device.

 

They said, it direct bolt-on onto 88-91 civic, crx dont need custom mount.

My suspension??? u name one.. i got them.. LOL.
My civic built for autocross not for straight road, its slow motor but i like goin fast in the tight curves,( its not about horsepower, its about your driving skill in autocross). LOL :D

 

Yea. Position of the brace will make a big difference on the support it adds.

So im correct in the assumption that you have a rear sub frame brace.

My integra I added a H brace in front of the of the fuel tank, But i also have front bracing.

I would probably do the same are slightly in front of the fuel tank.

You can feel a difference w/ bracing the car feels a lot more stable through corners.

 

I used to run the lower front bar and LOVED it.
I completely knew it was in there especially in situations where I would normally get a little bump steer without the bar.

The additional chassis bracing looks like a WIN!

 

looks is outta the picture since you cant really see it, but yeah it should be used with other parts too like a rear subframe brace

 

Who makes one of those and why can it not be used by itself? .. and why would rear stiffening be even comparatively beneficial as the front?
Front flexes way more than the rear.

It's not much different than using a front lower bar all by itself - it just has additional bracing to the chassis in the area where you get the most flex.

 

I agreed what 4drEF said, civic front flexes way more than the rear.
By the way, its not name brand..I really dont know the quality thou... I've got them from these Ebay....

http://cgi.ebay.com/ebaymotors/88-91...Q5fAccessories

 

how was fitament with ebay ones? I was planning on running one but im slammed...so dont think it would be a good idea to bolt one up under there

 

I really dont know the Ebay fitment, hope its good and perfect fit with no mods.

Im also slammed, Im just concern when I go to gas station or go over speed bump.Im pretty sure ill ripped something down there..

 

The EFs in general dont have rear structural support. So thats why it is a very good idea to run them with at least a tie bar, but preferable a rear sub frame brace. And even though you do get more flex out of the front it is beneficial to strengthen up the rear first because it is so weak.

 

You mean EG right? RIGHT?

The rear subframe brace does NOTHING for the EF.
There is absolutely no function for this brace on an EF. It is used on other civics because their rear sway bars that attach to their subframe. The EF sway bars attach to the frame rail and do NOT attach to the rear subframe.
Other Civics use them to help prevent sway bar tear out when they upgrade to a large sway. Original solution to the problem was the Beak's kit.

 

for the price, I would be concerned with what material it is made of.