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65mm (2.5") diameter
13k (726 in/lb) spring rate
Swift p/n Z65-178-130
Price is for a pair of springs
Just wanted to thank you guys for the great stuff and great work done on my MX5 club yesterday. I could feel the difference in sound and performance right away! It drives and corners awesome now. Can't wait to tell my friends about you guys. I'll be keeping an eye on your web site for other goodies and events as well. Can't wait to try my new suspension out on a auto cross. Will definitely be trying it on some twisty roads this weekend. Just can't wipe that smile off my face when driving this car. Thanks again guys!
-- Paul Young
Roadstersport II was a great purchase, easy install, and sounds great.