Mazda MX5 Miata NA 14mm

When you want to make optimal bumsteer to your car, this is the set you need. Optimal bumpsteer is rarely correct in street cars when its taken to racetrack. Adjustment is possible only if  you have this set.

Take away the original steering arm joint, put this piece to knuckle post and choose right uniball joint (heims joint). Then adjust the bumpsteer by shimming the height of the uniball in the shaft.

Read more below.