Miata springs come in several rate and height choices as further explained in the Miata spring product descriptions below. In general, the Racing Beat Miata springs have proven most popular here with Miata street drivers for many years thanks to their combination of reasonable cost, mild rate increase, and mild lowering. The higher rate Eibach Miata spring kits have proven most popular with the track users. We recommend Koni adjustable Miata shocks be matched with any of the Miata spring choices below.
Roadstersport II was a great purchase, easy install, and sounds great.
Brian, just wanted tyou to know you've got another highly satisfied customer. I got my RoadstersportIII muffler on Friday, installed it in 20 minutes, looks and sounds awesome. I like the baffles out!! My new tires/wheels came Saturday, just got them on and test drove them. Fantastic!! And how they look--- just what I was after. I will add the front "mud flap" that looks like the rear one, for some stone protection, but the offset was just what I was working for. I'd love to send you some pictures for your photo gallery. If you'll send an adress via e-mail, I'll send some high-res photos showing clearances and side profiles, etc. The graphite spokes and polished rims really set well on my black car. Thanks again, me and my wallet will be back!!