Miata Turbo Forum - Boost cars, acquire cats. - Socal: Koni Race/Sport Coilovers 650/450lb, Offset Bushings, NB2 Control Arms

Complete NB2 Control Arm Set with NEW Moog Ball Joints $300

Pulled off a bone stock 2001 Miata LS with 105K miles. The NB2 arms are the strongest that Mazda ever made, with much more internal bracing than the NA arms. I only removed them to upgrade to a complete Delrin arm set. They are in good shape, and I have replaced the ball joints with new NA Moog greasable ball joints. These ball joints don't need a tack weld, since they are secured by a snap ring just under the boot. Basically this is the perfect complete upgrade for any NA, since the ball joints will only fit the narrower knuckle of NA cars. Otherwise you can just get NA knuckles to run these arms on your NB.

New PAC Racing Springs Helper Springs 2.5" Diameter x 3" Length x 125lb/in Spring Rate $40 Shipped

New OEM NA Front Upper Spring Perches/ Tophats drilled for Koni Dampers $100 Shipped

I ordered these to experiment with mounting to Koni shocks, so the center hole is drilled out to 12mm. Useful if you are using any damper with a 12mm or bigger threaded rod.

*SOLD* Mazdaspeed/ Whiteline Front Upper Control Arm Offset Bushings

Ordred these bushings from Mazdaspeed to add more negative camber to the front wheels, but ended up not needing them. They are the urethane version, and come with grease. Mazda PN: 0000-04-5409

*SOLD* Koni Race/Sport Adjustable Coilovers 650/450lb

Up for sale is probably the best entry level autocross/ track day suspension setup for NA and NB Miatas, from 1990-2005. There's a reason why so many winning autorcross racers choose the Koni Race shocks. Front uses a Koni Race single adjustable damper, capable of 800+lb springs, paired with a 650lb 7" spring. Rear uses a Koni Sport single adjustable damper, paired with a 450lb 7" spring. Both front and rear use Koni adjustable sleeves, Energy Suspension urethane isolators, Koni bumpstops, and NB tophats. I also have NA front tophats, in case you want to use this setup on a NA.

This setup has less than 10 miles on it. I drove the car after putting the assembly together just to check for noise and made sure it was set up right. Even though the front uses 650lb springs, the Koni Race dampers have such good valving that the car feels less bumpy than the original 15 year old stock suspension.

I found a deal on Ohlins that I couldn't pass up, so these have to go. What you are getting is basically a new ready-to-race coilover setup without the headaches of waiting for parts to come in or figuring out how to stack all the parts and pieces together. It's just three bolts per corner of the car that you have to worry about. I have $1,400 invested in this setup, including custom grooving of the rear shock to allow more height adjustment, so you are saving $400 on parts. The scuffs on the body are just from installing/removing from the car. The paint on the bushings comes off instantly when you drive.