Fortune Auto 510 Coilover Kit | 17-20 Honda Civic Si

Fits:

• 2017 - 2020 Honda Civic Si

Hand-assembled in the USA — allow 4-8 weeks lead time. Cancellations are subject to a 30% restocking fee per Fortune Auto's dealer guidelines. Default spring rates are recommended unless you already have experience choosing custom rates.

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The 510 Series sits above the 500 in Fortune Auto's lineup, built around their Concave Flow Digressive (CFD) piston for a genuinely wider adjustment range than a conventional damper can offer. Where a typical shock can handle roughly a 2kg spring rate difference before needing a revalve, the CFD piston covers a full 8kg range — meaning you can tune your setup at the track on race day without ever pulling the damper apart.

Every damper ships custom-built with its own assembly certificate and dyno graph, backed by a 5-year limited warranty, with 24-step simultaneous rebound and compression adjustment.

Features

• Concave Flow Digressive Piston — 8kg spring rate adjustment range without revalving
• 24-step simultaneous rebound and compression adjustment
• Monotube damper with high-pressure nitrogen charge
• Custom built — individual assembly certificate and dyno graph included
• T6 6061 aluminum mounts and camber plates
• 5-year limited manufacturer's warranty, rebuildable/revalveable

Live stock is not displayed; items may be out of stock upon ordering. Please inquire for a stock check / in-stock alternatives. Cancellation fees may apply (see Terms of Service).