Koni 8245.1441 Special Active Front Shock Absorber 2016-2026 Mazda MX-5 Miata ND

The Koni 8245.1441 is a front shock absorber built for the 2016 through 2026 Mazda MX-5 Miata ND, including all trim levels and both the Roadster and RF body styles. Engineered in the Netherlands by Koni, the 8245.1441 uses Frequency Selective Damping (FSD) technology to automatically adapt damping force to road conditions without any manual adjustment. This Koni Special Active shock sits the front of your MX-5 approximately 0.5 in. lower than factory height, sharpening the stance while keeping ride quality on par with or better than OEM. The Koni 8245.1441 is covered by the Koni Lifetime Limited Warranty for the original purchaser in the United States and Canada.

Frequency Selective Damping (FSD) Technology

The Koni 8245.1441 uses Koni's patented Frequency Selective Damping system, which separates high-frequency, low-amplitude inputs from low-frequency, high-amplitude inputs at the valve level inside the shock. On smooth pavement and over fine road texture, the FSD valve opens a bypass channel that softens the damping force, absorbing small vibrations without transmitting harshness into the cabin. When the suspension encounters a sharper input such as a pothole, a mid-corner bump, or aggressive braking, the frequency of the input closes the bypass and the shock firms up immediately to control body motion. This automatic response happens continuously and simultaneously at each corner without driver input, dial adjustment, or electronic control. The result is a single fixed-rate shock that behaves like two separate tunes, keeping the MX-5 ND composed under hard driving while remaining compliant on daily roads.

Ride Height

The Koni 8245.1441 front shock is designed to lower the front of the 2016 through 2026 Mazda MX-5 Miata ND by approximately 0.5 in. relative to the factory OEM shock absorber. This modest drop improves the front-to-rear stance balance without requiring corner-specific spring rate changes. Because the drop is built into the shock's extended length rather than achieved through spring preload, it is compatible with both OEM replacement springs and most aftermarket lowering springs. If you are pairing the 8245.1441 with aftermarket springs, verify total drop with the spring manufacturer's published drop measurement for the ND platform to ensure the combined result meets your target ride height.

Fitment

What's Included

• 1 x Koni Special Active Front Shock Absorber (part number 8245.1441)
• Vehicle-specific mounting hardware is not included

Full Specifications

About Koni

Koni was founded in 1857 in Oud-Beijerland, the Netherlands, originally manufacturing steam-powered equipment before pivoting to vehicle shock absorbers in the 1930s. The company built its reputation supplying dampers to racing teams and premium vehicle manufacturers throughout Europe, establishing engineering credibility that carries through every product in its current lineup. Koni shock absorbers are produced at a purpose-built facility in the Netherlands and are engineered to meet or exceed OEM fitment tolerances. The Special Active line applies Koni's FSD valve technology to vehicles where ride quality and handling balance are equally critical, making the 8245.1441 a factory-upgrade-style replacement rather than a compromise. Koni remains an independent brand under the KYB Corporation umbrella and continues to develop damping technology for original equipment, motorsport, and aftermarket applications worldwide.

Frequently Asked Questions

What is Frequency Selective Damping and how does it work in the Koni 8245.1441?

Frequency Selective Damping (FSD) is a passive valve technology built into the piston of the 8245.1441. A secondary bypass channel inside the piston responds to the frequency and amplitude of suspension movement. At high frequencies and low amplitudes, the kind generated by road texture, tire noise, and minor surface irregularities, the bypass remains open and reduces overall damping force, giving the shock a soft, compliant character. At low frequencies and high amplitudes, the kind generated by body roll, braking dive, or hitting a pothole, the bypass closes and the shock operates at its full damping rate to control chassis motion. This all happens mechanically with no electronics, sensors, or driver input required.

Will the Koni 8245.1441 lower my MX-5 Miata ND?

Yes. The Koni 8245.1441 lowers the front of the 2016 through 2026 Mazda MX-5 Miata ND by approximately 0.5 in. compared to the factory OEM shock. This drop is a result of the shock's designed extended length and is not adjustable. The rear counterpart, part number 8245.1442, uses two clip positions to allow a small range of height adjustment at the rear axle. If precise ride height control is a priority, consider pairing the 8245.1441 with a coilover kit or height-adjustable spring perch setup.

Is the Koni 8245.1441 sold as a single unit or as a pair?

The 8245.1441 is sold individually, meaning one shock absorber per package. To replace both front shocks on your MX-5 ND, you will need to purchase two units of part number 8245.1441. The matching rear shock is sold separately under part number 8245.1442. Replacing all four shocks at the same time is generally recommended to maintain balanced damping across all four corners.

Is the Koni 8245.1441 compatible with aftermarket lowering springs?

The Koni 8245.1441 is compatible with most aftermarket lowering springs designed for the Mazda MX-5 Miata ND platform. Because the shock already provides approximately 0.5 in. of front drop on its own, adding lowering springs will produce a combined drop that is greater than the spring manufacturer's published drop figure measured against stock shocks. Before combining the 8245.1441 with lowering springs, verify that the total expected drop does not compromise suspension travel or cause coil bind. Koni recommends using their own spring kits when optimizing a full suspension package, but the shock is not restricted to use with OEM springs.

How does the Koni 8245.1441 compare to the factory Bilstein shocks found on some MX-5 ND trims?

Some MX-5 ND trims, particularly the Club and Grand Touring, are equipped from the factory with Bilstein OEM shocks, which sit the car slightly higher than the non-Bilstein variants due to their higher gas pressure. The Koni 8245.1441 is designed to replace the OEM shock on all ND trims regardless of the original shock brand. Because the Koni Special Active uses lower nitrogen gas pressure than the Bilstein OEM units, installing the 8245.1441 on a Bilstein-equipped trim will result in a slightly lower front stance compared to replacing a non-Bilstein OEM shock. Neither shock is superior in all conditions; the 8245.1441 offers the added benefit of FSD technology, which the factory Bilstein OEM units do not include.

Does installing the Koni 8245.1441 void my vehicle's factory warranty?

Under the Magnuson-Moss Warranty Act, a vehicle manufacturer cannot void your factory warranty solely because you installed an aftermarket part. The manufacturer would need to demonstrate that the aftermarket part directly caused the failure in question to deny a warranty claim on that specific component or system. Installing the Koni 8245.1441 does not automatically void your Mazda factory warranty. If you have specific concerns about warranty implications, consult with your Mazda dealer or review your warranty documentation before proceeding with installation.

Does the Koni 8245.1441 fit the MX-5 Miata RF (retractable fastback) body style?

Yes. The Koni 8245.1441 fits both the Roadster (soft-top convertible) and the RF (retractable fastback) body styles of the 2016 through 2026 Mazda MX-5 Miata ND. The front suspension geometry is identical between the two body styles, so part number 8245.1441 covers both without any modification. The RF's added roof weight does not affect shock absorber fitment.

Do I need a wheel alignment after installing the Koni 8245.1441?

Yes, a four-wheel alignment is strongly recommended after installing the Koni 8245.1441. The approximately 0.5 in. front drop changes the front ride height, which shifts camber, caster, and toe values away from the factory specifications. Driving on misaligned suspension accelerates tire wear and can compromise straight-line stability and cornering predictability. Schedule an alignment immediately after the installation is complete. If you are also installing new springs or other suspension components at the same time, complete all suspension work before the alignment appointment.

What warranty does the Koni 8245.1441 carry?

The Koni 8245.1441 is covered by the Koni Lifetime Limited Warranty, which applies to the original purchaser in the United States and Canada. This warranty covers manufacturing defects for the life of the original purchaser's ownership of the vehicle on which the shocks were installed. The warranty does not transfer to subsequent owners.

Contact Koni directly or visit the Koni website for full warranty terms, exclusions, and the claims process.