2.0L models only at the current time. Made in Italy. TUV certified.
Lowers 1.5"
Most of our competitors produce the lowering springs in a hot-wound process (progressivly wound too), but our production is a cold-wound Linear spring. This process makes the springs more reinforced and more durable over time creating a better handling and riding spring over Eibach, H&R or others. More comfortable but providing that sporty handling and looks you are after.
You picked out the only thing in the advertising that made sense which is that lowered vehicles tend to decrease aerodynamic drag and improve fuel economy while lifting a vehicle tends to decrease it
2.0L models only at the current time. Made in Italy. TUV certified.
Lowers 1.5"
Most of our competitors produce the lowering springs in a hot-wound process (progressivly wound too), but our production is a cold-wound Linear spring. This process makes the springs more reinforced and more durable over time creating a better handling and riding spring over Eibach, H&R or others. More comfortable but providing that sporty handling and looks you are after.
Jason are these linear rate springs then compared to stock progressive rate springs?
Progressive rate springs tend to provide better compliance and ride so im curious how these linear ones are doing the opposite of other linears that give a single spring rate over all road and weight transfer conditions?
Stock springs are not progressive rate. There are no dead coils on OEM springs. Our springs ride comfortable, they are not progressive either.
This is a progressive rate spring on rear. Not fronts. 2 coils that are close together are dead coils which is a clear indicator of a progressive rate spring.
Cold wound spring uses pre-tempered rod. So it is heated once.
Hot wound springs have to be tempered after winding. So it is heated twice..or more.
The additional heat application results in more metal fatigue meaning the metal is more stressed and will fail sooner, it also decreases the elasticity of the spring (makes the metal less flexible) so a cold wound spring will provide can provide both more support and ride compliance then a hot wound spring.
The purpose of engineering progressive rate springs is to get hot wound springs that behave more like cold wound.
Cold winding is the superior method of making a spring however it is nearly impossible to do with the rod diameter required for automotive springs, making them very rare in the industry. I'de be interested in hearing the process these springs go through to be made, probably cutting edge stuff.
In springs smaller then those used on cars, cold winding is the default process normally.
Cold wound spring uses pre-tempered rod. So it is heated once.
Hot wound springs have to be tempered after winding. So it is heated twice..or more.
The additional heat application results in more metal fatigue meaning the metal is more stressed and will fail sooner, it also decreases the elasticity of the spring (makes the metal less flexible) so a cold wound spring will provide can provide both more support and ride compliance then a hot wound spring.
The purpose of engineering progressive rate springs is to get hot wound springs that behave more like cold wound.
Cold winding is the superior method of making a spring however it is nearly impossible to do with the rod diameter required for automotive springs, making them very rare in the industry. I'de be interested in hearing the process these springs go through to be made, probably cutting edge stuff.
In springs smaller then those used on cars, cold winding is the default process normally.
Very good information Jason i appreciate it. Id love to have the stelvio lowered a bit but i want the benefits of handling with a lower center of gravity but dont want shock damping that is no longer optimum for the ride height. I know you've spoken about that before so hopefully these are the ticket. Im ok going kw v3 if that's the only way to truly achieve my objective but if a set if springs may actually do the trick that would be great. I have non adaptive sport suspension btw.
I will be honest. I do not think ANY lowering spring will achieve what you are looking for or what others may be looking for. It's mainly for looks and yes stiffer springs and lowering gives you the enhanced 'feel" that most may believe as a performance upgrade, I'd say it's most likely it's minimal in that. You reduce travel in the shock for sure. Lowering has many effects on suspension components to geometry as I am sure you are aware of.
Full coilover is what you want to lower IMO. That said these springs do very very well. They are comfortable which is one thing lowering usually destroys but this also allows for better grip, they handle well and are designed not to degrade the shock. You do have bump stops as well as a safety net. These are part progressive rears and linear fronts.
Below as a good article. I think addresses most of the important ideas behind lowering.
Forget horsepower. That’s for drag racing. If you want to go fast around a road course or autocross course, the vast majority of speed (to a point) comes from two things: the driver and chass…
What does having your shock absorbers be efficient and calibrated mean?
Seems like that is important to know since your explaination makes it seem as if it is the deciding factor in why the factory parts don't need replacing. I have never heard of calibrating a factory shock.
I really like you guys..ordered my tuneup parts from you...but have no clue what you are saying here. Would truly enjoy an explaination of how these terms apply and how to verify a customer's shocks are in proper calibration.
Thats fair. Ive wanted that magic bullet before when i was new to cars and put on springs that were highly recommended and low and behold the car was pogoing like crazy. So i then spent money on an install of Bilstein sports and compression was all messed up bottoming out. So then a third time i went with PSS10 and finally i got good compliance and handling!
After that it was coilivers... Bilstein or Ohlins. The 4 way Ohlins are truly magical with both high speed and low speed compression/rebound adjustment we actually got a smoother ride than stock while having control over 1000lb springs in the rear and 800lb in the front. Over twice stock. We could actually take off the larger antisways and get even more independence too.
Itd be nice not to have to go down the 5 thousand dollar rabbit hole but i get theres no free lunch. KW v3 isnt sounding bad although weve seen more than our share of problems with those too with spring collapse and requiring spring spacers due to poor design on audis.
Thats fair. Ive wanted that magic bullet before when i was new to cars and put on springs that were highly recommended and low and behold the car was pogoing like crazy. So i then spent money on an install of Bilstein sports and compression was all messed up bottoming out. So then a third time i went with PSS10 and finally i got good compliance and handling!
After that it was coilivers... Bilstein or Ohlins. The 4 way Ohlins are truly magical with both high speed and low speed compression/rebound adjustment we actually got a smoother ride than stock while having control over 1000lb springs in the rear and 800lb in the front. Over twice stock. We could actually take off the larger antisways and get even more independence too.
Itd be nice not to have to go down the 5 thousand dollar rabbit hole but i get theres no free lunch. KW v3 isnt sounding bad although weve seen more than our share of problems with those too with spring collapse and requiring spring spacers due to poor design on audis.
If you'd like to try them let me know? KW has had some issues for sure. We could also build something for you special from Intrax. The owner is an alfa freak and raced them. Might take time but it is a possibility. Another option is OEM QV springs. Otherwise Leave it alone.
Nobody has installed these yet? Again, alignment is in spec with these?
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