Progress Rear Sway on Si

[Monsterbishi]

I can personally attest that this is a great modification. Have you ever heard of or experienced understeer? Going into a corner too fast can get you in trouble very quickly. With this modification you can not only avoid excessive understeer, but even promote oversteer! The stock rear sway bar is designed to be very soft, therefore absorbing torsional energy in the frame during cornering, keeping the rear wheels planted firmly on the ground. With an aftermarket sway and upgraded endlinks you can counteract oversteer by breaking traction with the rear wheels. Even though there is no power going to the rears, the rotational inertia of your car overcomes the grip of your tires, bringing the rear end of your car around in a slide when you lift your foot from the gas. At this point, even though your rear wheels have temporarlily lost traction you have begun the process of pointing the front end in the right direction around the corner, as soon as you reapply the throttle the car straightens out again. Great mod, seriously. As for the bracket reinforcement kit, i havent needed it, but it seems like quite a good idea, but you can make your own for alot less than the kit for sale.
-Paul

[07 Figi Blue Si]

Originally Posted by abs0lutexer0

I just installed my Progress rear sway today. After comparing the pictures in the 1st page of this thread to what mine looks like. I've noticed that there are a few extra pieces of hardware that came with my Progress rear sway bar that were not used in the installation. Please see the picture below... I've circled the parts that I did not use for the installation. Does anyone know why? I bought this recently and I was told that this sway bar fits all 2006-2007 civic (SIs, non-SIs, coupe and sedan). My assumption is that these parts are only useful if you are installing it on the other civic models. Can someone please verify my assumption? Thanks!

Yes, you are correct. Just put one on this last weekend. Next, the Redshift RSB support brackets so the mounts don't crack!!!!!!!!!!!!!!! See other posts-some have cracked their LCA brackets for the end link connnection.

Si uses stock hardware and supplied brackets and bushings. Non-Si uses the flat brackets and the supplied hardware.

[Teek20]

progress rear sway bar thicker that stock

[Teek20]

Originally Posted by Teek20

progress rear sway bar thicker that stock

this is a question

[cincy94max]

Thanks for the detailed pics. This should make the install a breeze.

[racerx78]

Does anyone know of the bushing that come with this kit, are they polyurethane?

[They Call Me TK]

Originally Posted by racerx78

Does anyone know of the bushing that come with this kit, are they polyurethane?

yep

[racerx78]

Cool, i want to replace my front bushing with polyurethane, didn't know if i had to do my rear ones. The only thing that is annoying is that you have to take it all apart and lube them every so often.

[BlkSi08]

Dang guys I really want this mod as I can attest to what Monsterbishi's saying that the stock sway so soft that if you pull/tug on the other end it bend and not even moving on the other side - BUT I'm contemplating if I get this first or the camber kit for rear - already have kit for the front but not installed yet but the thing is my car only dropped about 1.5 front and 1.0 rear (Pro-kit) Which one to go first? dang! my head hurts...... Help please!

[Andrei'sCivic]

Highly recomended mod!
The non-Si civics can even think about the smaller 21mm Blox rear sway bar along with the front Si sway bar from the sedan or coupe 27mm or 28mm.

Also if the 2 door Si's here want less understeer they can downgrade their front oem 28mm sway bar to the sedan's 27mm bar.
I believe the 25.2 hollow front sway bar found on LX, EX coupes is too much of a downgrade, you loose too much steering response and you gain more front body sway.

[Strate L O S S]

Originally Posted by TheProtege

The Si has a stiffer chassis than the DX/LX/EX models, but I agree, the plates can only help.

what is this guy talking about ? is this true ?i mean besides the obvious suspension differences, if so does anyone have any specifcs.

sorry if this seems off topic and for bringing back an old thread, but im beefing up my lx suspension to si shocks and struts, and want to add si front sway with the progress rear sway, also the camber arms and bolts.

so as i was reading through these posts just wondering if that qoute is true cause im pretty sure the chasis are the same
thanks guys

[szuberi]

do the folks at progress have any technical data to prove any worthy imporovement of this bar over the stock one? there is 1mm difference right?

[Strate L O S S]

its a 1mm increase in size, but i think the diff is progress is solid and rear si stock is hollow ? not really sure as im trying to figure this out also

[rcallaham]

Outstanding DIY, redisblinking. I MUST have this mod now...

[purplemonkeydishwasher]

Originally Posted by Strate L O S S

its a 1mm increase in size, but i think the diff is progress is solid and rear si stock is hollow ? not really sure as im trying to figure this out also

A hollow vs. a solid bar has little to no difference on the torsional rigidity of the beam. A hollow tube with a sufficient wall thickness would be of equal torsional stiffness to a solid bar, while saving weight since it is hollow.

[Strate L O S S]

Originally Posted by purplemonkeydishwasher

A hollow vs. a solid bar has little to no difference on the torsional rigidity of the beam. A hollow tube with a sufficient wall thickness would be of equal torsional stiffness to a solid bar, while saving weight since it is hollow.

thanks for the info, so i doubt ill purchase this then, it just makes you wonder how 1mm can be justified for that price, plus how all these guys are ripping endlinks with just a 1mm increase

[wowwitsgau]

Sorry to revive a dead thread, but the stock si sway bar is 17mm, compared to the progress' 22mm. Don't know where you guys got teh 1mm difference from