Product Details
This AccuAir air suspension kit fits the 2017-2021 Honda Civic Si (FC1/FC3).
The AccuAir Air Suspension Kit for the 2017-2021 Honda Civic Si (FC1/FC3) swaps your factory struts and springs for a bolt-in air-over-damper package engineered for this chassis — no fabrication, no cut fenders, and full-lock steering retained. Each corner uses an AccuAir air strut with a sealed progressive-rate bag over a 1-way damping-adjustable shock, so you get a daily-driver ride at any height and an instant multi-inch drop from the driver's seat.
The struts are manufactured by AccuAir's OEM partners, pressure-cycle tested, and rebuildable — the shock cartridge, bag, and top hat are all serviceable separately. Paired with an AccuAir e+ CONNECT or e-Level+ management system, the Civic Si (FC1/FC3) kit delivers preset heights, load-leveling, and pressure-aware safety cutouts out of the box.
Features
- Bolt-in replacement — no cut fenders, no frame work, no fabrication
- Full lock-to-lock steering retained at any height
- 1-way damping-adjustable shock at all four corners
- Progressive-rate air spring calibrated to the Civic Si's corner weights
- Rebuildable strut — shock cartridge, bag, and mount sold separately
- Compatible with every AccuAir management system (e+ CONNECT, e-Level+, manual switchbox)
- Management system and compressor/tank sold separately — pair with the AccuAir Premium or Ultimate Package
Specifications
| Part Number | AA-5401 |
| Part Name | AccuAir Air Suspension Kit |
| Vehicle | 2017-2021 Honda Civic Si |
| Chassis Code | FC1/FC3 |
| Drivetrain | FWD |
| Damping Adjustment | 1-Way (16 levels) |
| Ride-Height Adjustable | Yes |
| Suspension Design - Front | True Coilover |
| Suspension Design - Rear | Divorced |
| Notes | Management system, compressor, and air tank required and sold separately |
Fitment for Civic Si air suspension kits
Fits the 2017-2021 Honda Civic Si (FC1/FC3). Each model year is listed below.