The KONI Special Active is a twin-tube, low-pressure nitrogen gas rear shock absorber for the 2015 and newer Mazda MX-5 Miata (ND chassis). It uses KONI's FSD (Frequency Selective Damping) valving, a mechanical internal valve that automatically firms up damping for low-frequency inputs like cornering, braking and steering while softening for high-frequency bumps and rough pavement — sharper body control and a more comfortable ride without electronic adjustment. A direct-fit replacement for the factory rear damper, KONI recommends running it with the stock springs.
| Type | Twin-tube low-pressure gas shock absorber (KONI Special Active) |
| Position | Rear |
| Construction | Twin-tube, low-pressure nitrogen gas charged |
| Damping | FSD (Frequency Selective Damping) — self-adjusting, no electronics |
| Spring Compatibility | Designed for use with stock springs |
| Quantity | 1 (sold individually) |
| Part Number | 8245 1442 |
Shipping: In-stock orders placed before 3 PM EST ship the same day, and everything else ships within 24 hours. Standard, expedited, and overnight options are available at checkout. Backordered items ship as soon as we get them back in stock. Contact us for lead times. See the full Shipping Policy.
Returns: 30-day returns on new, unused items in original packaging. See the full Refund Policy.
