ISC Suspension Valving Options: Which One is Right for You?

ISC Suspension valving options; Street Comfort, Street Sport & Track/race.  Which one is right for you?

One of the things that sets ISC Suspension apart from it’s competitors is that we offer 3 different valving options for all ISC N1 and ISC Basic coilover kits.  Each valving was chosen and designed to suit a different customers needs.  Sure, some of our competitors offer “custom valving” and/or custom spring rates, but that typically comes with a higher cost or longer lead time…..or both!  At ISC Suspension there is no additional charge associated with these options.

Street Comfort:

Our Street Comfort valving is the softest “off the shelf” damping we offer and gives the customer the closest to a factory ride quality.  Although it shares the same spring rates as the street sport, the valving and shim stack are completely different.  The Street Comfort valving paired with our 32-way rebound adjustability allows the customer to dial in their preferred ride.  This is great for someone who wants to lower their vehicle without having the stereotypical “harsh coilover ride” on the street.  As the driver dials in more rebound stiffness, the valving curve actually overlaps slightly with our Street Sport valving.  This gives the driver the ability to dial in a softer feel when driving on the street, but also the ability to dial in more stiffness for more aggressive driving.

Street Sport:

The ISC Street Sport valving is far and away our top selling platform with the most versatility!  Roughly 65% of our customer base opt for the Street Sport valving.  Why?  It’s perfect for someone looking for a damper curve for daily driving and someone that also uses their vehicle on the weekends for motorsport type events; whether that be canyon carving, track days, auto cross, drifting or time attack.  This is the ultimate suspension tool for the weekend warrior!  A wide range of damping adjustment will allow the driver to change the rebound stiffness to something relatively soft when needed or turn it up during those motorsport events.

Track/Race:

Our Track/Race valving is the most aggressive damping setup we offer.  How does it differ from the Street Sport (this is a common question we get)?  If you overlayed the dyno graphs of the Street Sport and the Track/Race valving, you’ll find that the hardest setting on our Street Sport valving is just shy of the softest setting on the Track/Race valving.  We only suggest the Track/Race valving for dedicated track cars that generally get towed to and from events.  This valving would also be good for race cars that are very dependent on using aerodynamics (large front splitters, canards, flat bottoms, rear diffusers, large rear wings, etc).  The spring rates are also higher on these, usually about 2kg or more compared to the Street Comfort or Street Sports.

Custom Spring Rates:

This can be a very common question that we hear from customers that are reading information posted in online forums, etc.  The ISC R&D team has spent a good amount of time developing and engineering our 3 valvings and pairing spring rates accordingly with each chassis (total vehicle weight as well as weight distribution throughout the chassis comes into play here).  There are certainly times though that the pairing we’ve made doesn’t accomplish what the driver had in mind.  With that being said, we are happy to provide you with custom spring rates at no additional charge.  If a customer does want custom spring rates, there likely will be a longer than normal lead time, so we can properly valve the damper in use to match the new spring rate.