eibach prokit or sportline springs??

[XXX4life]

which springs are better? i know the sportlines are a lower drop but which one is stiffer? and which would be better?

[Var]

:zzz: :blah:

[XXX4life]

thanks http://www.zilvia.net/f/newreply.php?do=newreply&noquote=1&p=387810#

[invisibleman]

prokit are progressive rate springs and they have a more comfy ride versus the sportlines.

[Var]

omfg :doh:
pro-kit is linear rate & stiffer, prokit is progressive and lower ride height. it's been covered 38475934856 times already.

[EchoOfSilence]

sportlines > pro-kit

[Flybert]

I liked my pro-kits matched with koni yellows. Great combo and if you are looking for sleeper style, that is the way to go because the drop doesn't make your car look sporty.

[kermit80]

I haven't tried the prokit, but i doubt the ride will be really much more comfortable. I have heard the prokit is crap for a drop.

I got sportlines and i love them. I kinda wish i cut my rubber spring mounts but i didn't read the instructions. My car would be dropped evenly but it still looks nice. I guess i scrape the bottom less since it isn't as low but i really like them. I got them with KYB AGX adjustable shocks and with it set to 1 in front and 2 in rear, it's not bad on the crazy potholes in Hawaii.

[driftyour40]

NISSAN, 240SX - 1995
(Incl. SE & LE Coupe)
Product Front Rear Comments Part Number
SPORTLINE KIT 1.7 in 1.4 in 4.3363
ALIGNMENT KIT Front +/- 1.75 degrees of adjustment. 5.81250K
PRO-KIT 1.2 in 1 in 6333.140 The following questions are the ones most frequently asked by our customers in regards to our Suspension Products. If your question is not answered here, please contact us at 909-256-8300 or we can be reached by fax 909-256-8319.

What makes Eibach springs better than others?
I want to lower my car, but do not want to give up my ride quality, will Eibach springs ruin my ride characteristics?
Is it necessary to have my vehicle aligned after installing an Eibach Spring Kit?
Some competitor' spring kits claim to lower my vehicle more than the Eibach kits... isn’t this better? If the vehicle is lower, won’t it handle more like a racecar?
What shocks or struts should I use with an Eibach Pro-Kit?
Are Eibach street products street-legal everywhere?
Will I have proper tire clearance with a "plus size" wheel & tire package after installing an Eibach Pro-Kit?
What is wrong with heating or cutting a coil spring to lower a vehicle?
When Eibach suspension springs are fitted, will the car sit at the correct ride height or will it need time to settle?
My vehicle has a torsion bar at the rear (or front). If I lower the front (or rear), how do I alter the other end of the vehicle?
Can I just fit front (or rear) springs instead of the complete front and rear set?
Is it allowed to do the installation of the springs by myself?
Does the Eibach Pro-Kit work with the OEM shock?
What happens to the warranty of the OEM shock when combined with Eibach Pro-Kit?
Can I load the normally allowed load (trunk) also with an Eibach Pro-Kit?
What is the spring rate of the Pro-Kit?
How often should springs be replaced?
Why is Eibach more expensive than other (no-name) makes?
Is there a hint how to install the Pro-Kit spring?
Do the Eibach Pro-Kits have different colors?
What is the advantage of a progressive set-up – like the famous Eibach main- and tender spring combination?
What is the advantage of a progressive Eibach Pro-Kit?
What makes Eibach springs better than others? Index

Eibach springs obtain their impressive performance through an extensive process, beginning with nearly 50 years of spring technology by dedicated engineers, craftsmen and enthusiasts. We take our years of racing experience and combine them with controlling every aspect of producing the finest performance springs. This journey begins with our own engineers extensively testing and determining the optimal design characteristics for each application. We then manufacture the springs using spring wire to Eibach engineers specifications on computerized coiling equipment. We are pleased to be able to have this question best answered by our "very picky" partners from around the globe who have already discovered Eibach´s commitment to quality, consistency and performance is second to none. Thank you McLaren F1, AMG-Mercedes, Audi, BMW, Ford, VW, Alfa, Lotus, Alpina, Aston Martin, Porsche, Ferrari etc.

I want to lower my car, but do not want to give up my ride quality, will Eibach springs ruin my ride characteristics? Index

Eibach engineers are familiar with the balance of optimizing handling while maintaining ride quality. Without extensive research and pioneering of progressive rate performance suspension springs Eibach springs will provide the exceptional handling and precise vehicle responsiveness and stability with minimal effect to the ride quality. Eibach suspension components are designed to allow the suspension to move in a controlled manner unleashing the performance potential of the vehicle... Unleash the power. We want the driver to be a working component rather than a passive operator.

Is it necessary to have my vehicle aligned after installing an Eibach Spring Kit? Index

Yes. Any time you work on the suspension system and after the ride height, it is necessary to check and adjust the alignment of the vehicle. By lowering the center of gravity and ride height of a vehicle to enhance the handling, some negative camber may occur, which additionally improves adhesion during performance driving. In setting up a performance suspension system, some negative camber is desirable. Eibach offers alignment kits for selective applications to assist in performance and street suited alignment requirements.



Some competitor' spring kits claim to lower my vehicle more than the Eibach kits... isn’t this better? If the vehicle is lower, won’t it handle more like a racecar? Index

A spring kit that lowers the vehicle excessively will be operating with little or no suspension travel, resulting in an uncomfortable ride and unsafe handling. The vehicle may skip over bumps and road transitions, causing the tires to loose contact (adhesion/traction) with the road surface. A race prepared vehicle has a chassis and suspension designed for use solely on racetracks. The requirements for an everyday, street-driven vehicle that encounters potholes, expansion joints, weathered tarmac etc. are completely different. Eibach spring kits lower the vehicle center of gravity properly while maintaining adequate suspension travel to meet the demands of the enthusiasts. Trust into the experienced Eibach engineers who have always tried to design the ultimate sportive suspension. They also have to dissuade from irresponsible extreme lowered set-ups, where the vehicle is riding mostly on the bump stops. This is dangerous and in most countries illegal!



What shocks or struts should I use with an Eibach Pro-Kit? Index

Eibach Pro-Kits are designed to work with original equipment shocks and struts provided they are in good working condition.

Aftermarket performance shocks and struts will increase the overall performance of your suspension and are also recommended for use with Eibach Pro-Kits. Pro-Damper - valved by Eibach, is the newly established line of Eibach performance dampers. The Eibach Pro-Damper is the ultimate match for the Pro-Kit as it is the only damper line which is valved to work in unison with the Pro-Kit characteristic.

Are Eibach street products street-legal everywhere? Index

Eibach’s performance street products are designed and manufactured to the highest technical standards, including the DIN EN ISO 9001 German TÜV, Japanese MOT and the additional local standards found worldwide. Eibach performance street products contain the critical requirements of:

Maintaining minimum pre-load to assure positive spring location under all driving conditions
Maintain calculated remaining travel for impressive performance, safety and ride quality
Dynamic durability assurance to provide years of lasting performance
Corrosion protection meeting the requirements of the OEM industry and Eibach’s critical standards
Backed with a guarantee and reputation of the leading performance suspension company
Eibach’s Pro-Kit, Pro-Damper, Anti-Roll-Kit and Pro-Control Bar are legal in practically all countries around the world. A few exceptions may apply.

Will I have proper tire clearance with a "plus size" wheel & tire package after installing an Eibach Pro-Kit? Index

All Eibach suspension kits are designed and tested around the vehicle’s original wheel and tire combination as provided by the manufacturer. The installation of an Eibach Pro-Kit does not alter the original range of wheel travel and as a result can never be the cause of wheel or tire clearance problems. It is best to work with a reputable wheel and tire dealer that is knowledgeable in the proper wheel size (width and offset) that is correct for your vehicle in order to prevent clearance problems caused by improper wheel and tire packages.

What is wrong with heating or cutting a coil spring to lower a vehicle? Index

Heating or cutting a coil spring in order to lower a vehicle is just plain foolish. These procedures are very dangerous and at the very least results in poor handling due to the changing of the original springs characteristic and pre-load.

When Eibach suspension springs are fitted, will the car sit at the correct ride height or will it need time to settle? Index

All Eibach suspension coils are pre-set to eliminate settling and increase life expectancy. Some minimal settling may occur as the new spring mates up to an existing rubber suspension isolator, this is normal, but is not the same as a poorly produced spring which may take a set and effect the ride height, handling and alignment of the vehicle.

My vehicle has a torsion bar at the rear (or front). If I lower the front (or rear), how do I alter the other end of the vehicle? Index

Vehicles, equipped with coil springs at one end and torsion bars at the other, have a height adjustment available from the factory, which allows altering the ride height to be compatible with the height of the Eibach coil springs. The maximum load capacity of the torsion bar will be reduced.

Can I just fit front (or rear) springs instead of the complete front and rear set? Index

NO!! Eibach suspension springs are designed as a balance spring system producing increased performance, responsiveness and driving enjoyment. Under no circumstances do we recommend or endorse the installation of 1/2 of an Eibach spring system.

Is it allowed to do the installation of the springs by myself? Index

NO!! We absolutely warn to install springs without the proper equipment plus the experience of a professional work-shop. A compressed spring usually stores more than 500kg (> 1000 lbs) of dynamic energy! Unintentional release is absolutely dangerous.

Does the Eibach Pro-Kit work with the OEM shock? Index

All Eibach Pro-Kits are engineered to perform in harmony with the original damper of the special vehicle - take for granted a good working condition. All TÜV approvals in Germany certify the combination of the Pro-Kit with an OEM shock.

What happens to the warranty of the OEM shock when combined with Eibach Pro-Kit? Index

There is no change of the warranty. Actually, the weight of the car and the required basic dynamic work remain the same. Though with special progressive characteristic of the Pro-Kit, the damper is challenged more and usually makes it wear out faster.

Can I load the normally allowed load (trunk) also with an Eibach Pro-Kit? Index

All Eibach Pro-Kits are designed for the same maximum load like the OE springs. Actually, a progressive Eibach spring generates higher resistance under heavier load.

What is the spring rate of the Pro-Kit? Index

Only simple linear springs have a spring rate. A sophisticated progressive Eibach Pro-Kit spring has a load/deflection characteristic. The special design parameters are only accessable through Eibach Desk-Tech Database to Eibach’s exclusive partners.

Created for the extreme enthusiast, who wants that "race-car" attitude, our Sportline springs are designed for maximum street performance - with the lowest possible drop. Engineered with the same care as our Pro-Kit springs, Eibach's Sportline springs achieve legendary handling by aggressively lowering the vehicle's center of gravity with precision-engineered spring rates. The results is a car that handles as well as it looks. Eibach also offers top-quality Alignment Kits to keep proper suspension geometry.

As with our popular Pro-Kit, Sportline springs are designed by experienced suspension engineers and manufactured using the finest alloy spring wire available and under the same Eibach quality standards.

Extreme Performance
Race-Car Like Handling
Progressive Spring Design
Lowers vehicle 1.75" to 2.25"
Sportline puts it all together, Race-Car looks, sportive handling and Eibach proven quality.


Created for the extreme enthusiast, who wants that "race-car" attitude, our Sportline springs are designed for maximum street performance - with the lowest possible drop. Engineered with the same care as our Pro-Kit springs, Eibach's Sportline springs achieve legendary handling by aggressively lowering the vehicle's center of gravity with precision-engineered spring rates. The results is a car that handles as well as it looks. Eibach also offers top-quality Alignment Kits to keep proper suspension geometry.

As with our popular Pro-Kit, Sportline springs are designed by experienced suspension engineers and manufactured using the finest alloy spring wire available and under the same Eibach quality standards.

Extreme Performance
Race-Car Like Handling
Progressive Spring Design
Lowers vehicle 1.75" to 2.25"
Sportline puts it all together, Race-Car looks, sportive handling and Eibach proven quality.


thats what i found at eibach.com looks like its a judgment call

[driftyour40]

sorry about all that cut and paste doesn't work the way i remember

[Var]

:confused: im dizzy

[suhster85]

omfg :doh:
pro-kit is linear rate & stiffer, prokit is progressive and lower ride height. it's been covered 38475934856 times already.

are you kidding me? pro-kit is lower ride height? I'm pretty damn sure that teh sportlines are lower.

[Var]

oops my bad. I meant prokit is linear and stiffer, and sportlines are progressive ride height. if you notice i typed in pro-kit twice where i should have typed sportline the second time. :gives:

[A17Z]

I haven't tried the prokit, but i doubt the ride will be really much more comfortable. I have heard the prokit is crap for a drop.

I got sportlines and i love them. I kinda wish i cut my rubber spring mounts but i didn't read the instructions. My car would be dropped evenly but it still looks nice. I guess i scrape the bottom less since it isn't as low but i really like them. I got them with KYB AGX adjustable shocks and with it set to 1 in front and 2 in rear, it's not bad on the crazy potholes in Hawaii.

what does the instructions say to do? you need to cut the rubber spring mounts?? I just got a used set from a friend.

[MEisGQ]

yes... so whats up with this cutting the rubber mount? I have them installed for 3 months and just noticed that the front is higher than the rear... maybe its because I have a speaker box in the back... maybe not

[Var]

what does the instructions say to do? you need to cut the rubber spring mounts?? I just got a used set from a friend.


rubber spring mount? i'm lost. which rubber?

[DuffMan]

I dont understand why people still buy Eibach prokit/sportline. They are crappy spring rates and people have had inconsistancies with different drop ammounts.

Stechs are like what, 120 bucks.

[A17Z]

Just spoke with Eibach and they recommend to cut 35mm off the bottom of the front bump stops.

[Var]

I dont understand why people still buy Eibach prokit/sportline. They are crappy spring rates and people have had inconsistancies with different drop ammounts.

Stechs are like what, 120 bucks.


:werd:

im with you 100%. German company make springs for japanese cars= i'm unhappy. pro kit's were way too soft. then again i'm still using eibach but custom rates.. so it's all good.

[ny180sx]

gotta get SPORTLINE...

[s14unimog]

I have the eibach pro kit and the biggest difference is first the prokit is stiffer b/c it is more for handeling in stead of looks also the prokit drops the front more than the rear, as opposed to the sportlines the rear tucks almost half of the stock SE tire size profile. the pro kit drops the car enough to tell its lowered, also my front lips shows that :rolleyes: I'm telling you I bottom out on almost everything so if you get the sportlines good luck :fawkd:

[XXX4life]

i got the sportlines on but the car still looks high cause the wheel weels are so big

[dekand]

i have prokit, the drop is perfect in my opinion. Any lower would need camber adjustment. Matched with the kyb agx's on full soft for daily driving it is really comfortable and still handles great. there is less than a finger gap between the tires and the fender, so i love the way it looks, and its not so low i scrape speed bumps.

[kazuo]

oOOooOooOO

Baaaack from the deeaaaaaaaaad

ooOOooooOOO

Anyway.

Contrary to what Var says (post #5), per Eibach's site, both the ProKit and Sportlines are Progressive.

Sportline: http://eibach.com/cgi-bin/htmlos.exe/00339.2.6299695120000018409
ProKit: http://eibach.com/cgi-bin/htmlos.exe/00339.3.6119085970600018409

Unless the progressive/linear aspect changes according to application, which is not noted on the site?

And, per the Spring rate/Ride Height FAQ here in Zilvia:

Eibach ProKit
* * *Front: *114-200 lb/in | -1.8"
* * *Rear: * 114-148 lb/in | 1.6"

Eibach Sportlines
* * *Front: *137-230 lb/in | 2.2"
* * *Rear: * 128-200 lb/in | 2.1"

So, the springs on the Sportlines appear to be stiffer, but is it offset by the "excessive" drop compared to the Prokit?

I'm confused.

Someone explain!

[projectRDM]

I've dealt with both. The Sportlines have a softer ride overall, more bounce and less response. The ProKits are better for spirited driving, autocross, etc. but do not lower as much. It's a tradeoff.

But hey, as long as it looks cool who cares right? It's not like the new age 240 owner gives a fuck about actually driving their car.

[AadosX]

LOL Kazuo, I see you are doing some homework. ;)

Damn R, you never got back to me on that front S14 5 lug stuff :/

Anyways, I'm grabbing the sportlines (or at least trying to) because I'm a ricer... that and the S13 is my beater. The S14 is the REAL CAR.

[Djrockz415]

hmm i think i need to take my fronts off and cut the bumpstop..damn...but neways i got the sportlines paired up with tokico blues ..a lil stiff with the blues but not too much. i get compliments bout the way my s13 runs on the freeway, nice low stance from the back, not bouncing all over the place like those ebay springs do to ppl. My front is a lil higher but not that noticable, but i think im going to take them out and cut the bumpstops. I also had to get camber bushings in the rear (100 from pdmracing, as i didnt wanna pay 3-400 for the camber arms), front camber was just fine. im pretty happy with these springs so far. If some of you who own the sport line think that its not low enough, just park right next to a stock s13 and see how much of a difference the springs make (front stock height will make you wanna puke)

[kazuo]

So no one has a straight answer?

I'm going to email Eibach tomorrow, ask them about cutting the bump stops thing and whether they're both really progressive springs.

So what exactly makes the Prokit better than the Sportlines performance-wise?

Anyone?