Karcepts Front Sway Bar Kit - 1.25 for MX5-ND
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Karcepts Front Sway Bar Kit - 1.25"


For extreme cases on race tires

PART NUMBER: 61-3218



Price: $835.00



Free shipping offers apply only to destinations within US Lower 48.

Price: $835.00



Free shipping offers apply only to destinations within US Lower 48.


Designed for the most serious competitors, the Karcepts ND Front Sway Bar Kit leaves no compromises on the table. Hundreds of hours of design time have gone into this kit utilizing CMM technology and FEA analysis. The end result is a 2016+ Mazda MX-5 Miata Front Sway Bar Kit that offers super quick adjustability, an enormous adjustment range, maximum stiffness with minimal weight, and an installation time of just 30 minutes (after the stock bar has been removed).

  • Sway bar rate is adjusted with one wrench, in only a few minutes
  • Rate adjustments are made with the vehicle on the ground, even at low ride heights
  • 5 adjustment positions per sway bar arm, maximizing tunability and overall range
  • Billet aluminum arms optimized for strength and weight utilizing the latest FEA software
  • Light weight, zero deflection solid sway bar mounts provided for precise feel
  • Low friction, lubrication free, dirt resistant, solid polymer bearings require no maintenance
  • Heat treated and plated steel alloy PTFE lined endlinks and all hardware included
  • Splined 1.25" diameter x 0.75" gun drilled high-grade spring steel center section for consistent rates.

Sway Bar Rates:

OEM ND Front Sway Bar = 132 lbs/in

Karcepts ND Front Sway Bar Kit - 1.25":
Hole 1/1 = 655 lbs/in
Hole 1/2 = 693 lbs/in
Hole 2/2 = 731 lbs/in
Hole 2/3 = 776 lbs/in
Hole 3/3 = 822 lbs/in
Hole 3/4 = 876 lbs/in
Hole 4/4 = 931 lbs/in
Hole 4/5 = 996 lbs/in
Hole 5/5 = 1061 lbs/in
Kit Weight = 14.1 lbs

Center Section Recommendations: This 1.25" bar is for hardcore racers on wide race tires in 245mm or wider. For an all around great performing bar for 235-245mm extreme performance street tires or narrower race tires, we recommend looking to our other listing for this same kit with the 1.13" center section as that really hits a nice range of adjustment for this chassis. For SCCA CS trim vehicles, we recommend looking to our other listing for this same kit with the 1.07" bar, since you cannot upgrade the rear sway bar in CS that 1.07" bar tends to balance better with stock rear bar.

View the installation instructions for any potential install/fitment questions you may have:KFSB-ND-XX Installation Instructions

FIAT 124 NOTE: May require modifying or replacing the factory intercooler piping to clear this sway bar.

Brian's Application Notes: I admired and admired this setup but we did not start to carry it until I watched an STR competitor change both his front and rear sway bar settings BETWEEN RUNS at an SCCA event. Took him under a minute to change the rear sway setting, and just over a minute at the front...which is amazing. No other sway setup empowers you to change settings as fast as this setup in my experience, making this setup unique for the hardcore racers who want to dial their setup on the fly. Nonetheless, recommended for the REAL Racers, not the average daily driver because the solid links so good for racing can and will eventually rattle.