When the Miata was first taken to the track, it had el cheapo, mismatched, all-season tires. Knowing that we would move to stickier tires, the excessive body roll situation would get worse before getting better. The decision was made to pull the trigger on a full sway bar set and it just so happened that Whiteline offered a complete vehicle kit that was exactly what I was looking for. Whiteline’s kit consists of a 2 position adjustable front roll bar, a 3 position adjustable rear roll bar, adjustable front roll bar links and front lateral locks. In 1993, the stock Miata roll bar sizes were 19mm front and tiny little 12mm guy in the back. At 24mm, the new front bar is 155% stiffer on the soft setting and 200% stiffer on the hard setting. The rear bar is 16mm and 144% stiffer on soft, 216% stiffer on middle and 303% stiff on hard. All of the different settings give a lot of adjustability to suit different driving styles and future modifications.


My recommendation is to invite your friend Zack over, raise the car onto tire stands, sit back and take pictures while he works hard replacing your OEM parts.
Pictured here is half of the job you'll need to complete to get the rear bar off. Remove the sway bar end link bolt, then the two nuts holding the sway bar bushing in place. Wash, rinse, repeat on the other side and you'll have your sway bar off!
Continue taking pictures from time to time to ensure your Zack doesn't feel like you're taking advantage of his kindness.
All removed and ready for comparison. The Whiteline bar is a healthy jump in size and includes everything you will need for the new install. For you West Coasters, the brown, scaley looking stuff is rust. By some miracle, no bolts were seized and the job went smoothly.
It isn't a MotoIQ sway bar article unless Teflon tape is being used to prevent squeaks from happening. Teflon was developed by DuPont to be non-stick and non-reactive and has a million uses from medical procedures, to installs on rust bucket cars!
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Monday, November 20, 2017 11:52 AM
What would happen if you set one side of an anti-roll bar to a different setting than the other side of the same bar? Would you have a stiffness that is between the advertised settings? In other words, if you set the front bar to the stiffer hole on the left and the softer hole on the right, would you have an effective stiffness that is between the soft and stiff settings?

Or, would that just result in uneven stiffness when turning left or right?

If it is feasible to set the bars differently left-to-right, then you would now have a 3-way front bar and a 5-way rear bar. Your ability to fine tune the handling in the future would be more broad.
Monday, November 20, 2017 12:10 PM
You know, I've wondered this myself. I feel like there wouldn't be any negative effects in running different adjustment holes on different sides, but I'd love to hear other thoughts.
Monday, November 20, 2017 12:34 PM
can I barrow Zack? I need my front sway bar installed on my NC
Mike Kojima
Mike Kojimalink
Monday, November 20, 2017 8:42 PM
BANFSTC, if you adjust the sides of the bar differently, your overall stiffness is the same either way, but since bars are sometimes irregularly shaped and sometimes have some bind, it is possible that the roll stiffness could be slightly different from side to side.
Monday, November 20, 2017 9:16 PM
Congrats on changing it to My Fiancée's Miata!
Nicolas G
Nicolas Glink
Tuesday, November 21, 2017 8:05 AM
BANFSTC, the RX Lights Spec series routinely adjust sides differently to get half steps in the adjustment.
Tuesday, November 21, 2017 6:42 PM
Having the left and right on the bar different causes oddness. Consider front wheels under straight line braking. Equal length arms results in the sway bar have no real impact. But on unequal length arms, say the right arm is shorter than the left, then the right suspension is trying to put more rotation on the bar for the same suspension compression than the left does. This results in the bar winding up, and the front of the car wanting to roll to the left to straighten the bar out. Depending on what the rear end is also doing it can result in uneven weight distribution across the front tires. Similar oddness occurs under actual cornering being unsymetrical for a left vs right turn. So I wouldn't really consider it a mid setting - it's more complex than that.
Wednesday, November 22, 2017 10:19 AM

This was "My Girlfriends Miata" yesterday.
Wednesday, November 22, 2017 2:21 PM
Don't let my girlfriend know!
Sunday, December 17, 2017 11:34 AM
Asymmetrical sway bar settings would result in asymmetrical behavior. I think the side of the vehicle set 'softer' would actually get swaybar'd up into the vehicle when hitting a straightforward bump.

I bet it's very useful for drag racing.
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