I am considering a set of Progress CS-II for my 00 Si. Car is driven daily, but I have no issues with an stiff ride (already own a Evo 8 on Stance coilovers).

I'd probably go for the 350front/350rear spring rates. Maybe the 350/500, but not sure yet.

My main concerns are quality and durability. How does the CS-II hold up? Any known issues?

 

350front/350rear would be the best fun street setup with the Progress coilovers IMO. The 350/500 would be pretty harsh on the street and probably a bit unsafe for the average driver. If you want the shocks to last, 350/250 or 350/350 are your best bet. Progress makes some real good products, is well known and been around for quite a while. For the price, these coilovers can't be beat. I havn't seen anything else on the market that's compareable in this price range.

 

I have cs2s on my teg. Loving them. BBUUTTT i wish there was an option for like 400 fronts. The 350 would botttom out sometimes on medium bumps and stuff like that and the 500 rears are perfect for me. Butt cant complain. They handle great even with out any alighnment and shitie tires. OP if u plan to ride low in the front. The 350 option will bottom out. IMO
GL.

 

any updates on what u went with? i have a 99 si as well and im looking for a nice drop but still with the stock driving feel. any suggestions?

 

Progress Coil overs ride very nice on the road, nice solid feel with out being to harsh with 350-250 springs. I have installed several of them on project cars here at Bisimoto for both street and race cars.

 

350f/250r on my Db and I couldnt be happier. Like above poster said riding a little too low they do bottom out. Right at 2 or 2.25 inches down they are perfect. Would not have a problem buying these again

 

I know this an old thread but what oem parts would i need to get to install these? Right now i have ksports which are shot in the front

 

Top mounts, factory hardware.

 

Go to the website and review he install guide before you purchase. They are also NOT for slamming the car with.

 

I never understood that. If they aren't meant for slamming a car, why even have extra threads on the shock bodies? Seems they could get away with manufacturing a shock with an inch of threads.

 

I'm sorry. Not understanding what? The manufacturer's recommended usage for a product they built, test and market? That there is a range of optimal height? That they don't recommend anything outside of that? What part is tripping you up? Have we ever bothered to check out the website?

 

Yes I read whats on the website. It says they are good for a 1-3" drop in the beginning but goes on to say 11.5-12.5" gap from the fender to center of the wheel is ideal. You said they aren't meant for slamming a car but 3" is pretty damn low and the instructions say they are good for that.

 

"Yeah, you could do it... but that don't mean it's to be done! ****, you can drive a car with your feet if you want to, that don't make it a good ******* idea!" Chris Rock

 

Progress doesn't recommend slamming the car, but you could if you wanted to.

 

The reason why they even make threaded shocks for our cars is so you can adjust them to correct corner weighting heights. Not to just lower your car, at least that's the reason why good suspension companies make them.