Miata NC PRHT on progress springs with koni shocks

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Miata NC PRHT on progress springs with koni shocks

Postby scottalej » Thu Jan 26, 2017 1:24 pm

Can those with this combo tell me their ride height (arch to wheel centre) from and rear.
Also, is there a supplier for these springs in the united kingdom?
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Re: Miata NC PRHT on progress springs with koni shocks

Postby IanG334 » Sat Jan 28, 2017 6:19 am

Front 345mm, rear 335mm. Very pleased with this combination. I previously had Eibach springs but they became progressively lower and lower at the rear. No problems with the progress springs. Looks good and rides well too.
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Re: Miata NC PRHT on progress springs with koni shocks

Postby DavidM938 » Mon Jan 30, 2017 9:17 am

i have had this combo of progress springs and the yellow koni adjustables for several months on my 2013 PRHT Club. once I got past the stuck bushing issue that the NC's have, it now has a nice stance.One thing that is really important is to change out the bumpstops to one specifically for lowered cars, I just installed the FCM Sport package stops for lowered cars last week, and like the result. I'm at 13 3/4 rear, and 12 3/4 front with an autocross set up on the alignment (2.5 neg camber front, 2.3 neg rear) hope this helps. David M nashville
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Re: Miata NC PRHT on progress springs with koni shocks

Postby TouficC152 » Thu Mar 29, 2018 9:06 am

sorry to resurrect an old thread, but David what stuck bushing issue are you referring to? I put on Koni sports and Progress springs, and the front doesn't want to seem to settle in. Any help or insight you can provide would be tremendously helpful
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Re: Miata NC PRHT on progress springs with koni shocks

Postby Brian » Thu Mar 29, 2018 10:05 am

See the product description for the springs on our site...we put the factory TSB on this issue in the product description because this is a very common issue, see the 'Rocky Method' also talked about in the product description.
Brian Goodwin
Good-Win Racing
www.good-win-racing.com
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