Ground Control Coilover Conversion Kit for 2016-2026 Honda Civic Si FWD

Ground Control

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SKU: 4545

Ground Control Coilover Conversion Kit for 2016-2026 Honda Civic Si FWD

$1,099.00
Out of stock

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Fitment Notes

All fitment information on our website is provided by the manufacturer. It is the customer's responsibility to thoroughly read the product description and confirm fitment before placing an order and proceeding with installation.

Unless specified otherwise, all suspension products are designed for 2WD vehicles only. Any notes or descriptions related to electronic damping systems (EDC, DDS, etc.) apply strictly to vehicle fitment. Aftermarket coilovers are not compatible with OEM electronic damping control systems unless explicitly stated.

*Product images may not represent the actual SKU.

Handling Time

All handling times are estimates and may change at any time.

  • In-Stock: 1-2 business days
  • Out of Stock: TBD
30-Day Returns

Not quite right? No problem — we offer hassle-free 30-day returns on eligible items. A few exclusions apply.

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Manufacturer Warranty

Ground Control suspension products are backed by a warranty against defects in materials and workmanship. For street-driven applications, Ground Control offers a lifetime warranty to the original owner on eligible Ground Control-manufactured components, while racing products are covered for 90 days against failure and excessive wear, with a 1-year limited warranty on non-moving components. Warranty coverage excludes damage caused by improper installation, misuse, accidents, modifications, insufficient suspension travel, normal wear items, or use with incompatible parts. Warranty claims are evaluated on a case-by-case basis, and proof of purchase may be required. For complete warranty terms, exclusions, and claim procedures, please refer to the manufacturer’s full warranty documentation.

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Product Details

Ground Control Coilover Conversion Kits for the 2016-2026 Honda Civic Si FWD bring true ride-height control to your Civic Si, letting you dial in exactly the stance and corner balance you want instead of living with one fixed factory height. Built around a threaded, spin-to-adjust spring perch system, this kit lowers the car and tightens up body roll for a flatter, more planted feel through corners — all while working with the stock or aftermarket struts you already run.

Every kit is hand-built in the USA and backed by a lifetime guarantee on the complete assembly, not just the springs. Ground Control is the West Coast distributor for Eibach's ERS race spring line, so your car rides on premium springs warrantied against sag and rate change for life, paired with anodized 6061-T6 aluminum adjusters that lock securely under load.

Standard Features

  • Ride-height adjustable threaded spring perch system
  • Eibach ERS race springs with lifetime warranty against sag and rate change
  • Any race or street spring rate available on request
  • 6061-T6 anodized aluminum adjusters with square-cut threads that lock under load
  • Setscrew-secured spring seat holds your ride-height setting in place
  • Upper spring perches insulate the spring for quieter operation
  • Designed to work with stock or aftermarket dampers
  • Adjustment wrench provided where required
  • Hand-built in the USA with a lifetime guarantee on the complete kit, not just the springs
Specifications
Part Number 4545
Part Name Ground Control Coilover Conversion Kit
Vehicle 2016-2026 Honda Civic Si
Drivetrain FWD
Approximate Drop (inches) - Front 0 to -1.50
Approximate Drop (inches) - Rear 0 to -1.50
Ride-Height Adjustable Yes
Springs Eibach ERS (any rate available)
Notes Kit does not include dampers
Vehicle Fitment
  • 2016 Honda Civic Si FWD
  • 2017 Honda Civic Si FWD
  • 2018 Honda Civic Si FWD
  • 2019 Honda Civic Si FWD
  • 2020 Honda Civic Si FWD
  • 2021 Honda Civic Si FWD
  • 2022 Honda Civic Si FWD
  • 2023 Honda Civic Si FWD
  • 2024 Honda Civic Si FWD
  • 2025 Honda Civic Si FWD
  • 2026 Honda Civic Si FWD
Important Fitment Note

This is a spring-and-adjuster conversion kit and does not include dampers. It installs over your stock or aftermarket struts.

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