Are spring rubbers legal to race with?

[HoustonNW]

I want to tighten the car up a little more, however I do not want to use a softer rear spring. It is a pain to replace the front coilover springs so I wanted to try using spring rubbers (like NASCAR) to increase the front spring rate. Are they legal to race with?

http://www.longacreracing.com/images/products/setup/Spring-Rubbers.jpg

I was thinking of going to 360 Motorsports here in town tomorrow to get a couple of sets.

[ShadowBolt]

I want to tighten the car up a little more, however I do not want to use a softer rear spring. It is a pain to replace the front coilover springs so I wanted to try using spring rubbers (like NASCAR) to increase the front spring rate. Are they legal to race with?

http://www.longacreracing.com/images/products/setup/Spring-Rubbers.jpg

I was thinking of going to 360 Motorsports here in town tomorrow to get a couple of sets.

Yes, I'm almost positive you can run spring rubbers.


JJ

[kbrewmr2]

if springs are open, then they'd just be funky springs with the rubber...

[marshall_mosty]

Spring rate and bushing material is open... This is a bit of both, but still wide open.

[Al Fernandez]

I wouldnt have an issue with those.