XYZ Racing Super Sport Coilovers — Honda CIVIC SI φ54 (Modified Rear lntegrated) 2017-2026

The Civic Si’s front-wheel-drive layout puts almost all the cornering and braking load through the front axle, and on the HN25-10’s modified rear-integrated subframe that balance shifts again under hard direction changes. XYZ Racing built the Super Sport coilover specifically to manage that load transfer without turning the daily commute into a chore.

For an owner splitting time between the school run and the odd trackday, that’s the whole point of the Super Sport line: fast-road manners with enough adjustment range to sharpen the car when the calendar says track day. This is the fitment engineered for the 2017-2026 Civic Si HN25-10 with its revised rear-integrated geometry, not a generic strut swap.

What this coilover does for your 2017-2026 Honda Civic SI

Ride height is fully adjustable front and rear, so you can drop the Civic Si’s stance to close up the wheel arch gap or restore factory ride height for MOT and daily comfort without swapping parts. The 36-way damping adjustment lets you back the compression off for broken tarmac and speed bumps, then wind it up again before a circuit session, all from the same damper body. Because the valving is matched to this Civic Si’s rear-integrated subframe, load transfer under trail-braking stays predictable instead of pitching the rear end around mid-corner. Owners moving from worn factory struts typically notice the biggest gain in body control over compressions and crests, exactly where the standard set-up runs out of damping authority.

About the Super Sport coilover

XYZ Racing designed the Super Sport damper to solve a specific complaint from fast-road owners: factory and entry-level coilover setups transmit every ridge and pothole straight into the cabin. The 36-way adjustable damping addresses that directly, giving a wide enough band to run soft for a motorway commute and firm for a B-road without the car ever feeling under-damped at either end of the range. Ride height adjustment is built into the damper body rather than bolted on, so geometry stays consistent as you set the car up. The construction is aimed at drivers who want one set of coilovers to cover both a daily-driven Civic Si and the occasional weekend circuit outing, rather than forcing a choice between a comfort-biased or track-biased spring rate. It’s a road-first damper with enough adjustment headroom to follow you onto a track day without a re-spec.

Fitment for the Honda Civic SI (2017-2026)

This kit is built for the Honda Civic Si, chassis code HN25-10, covering the 2017 to 2026 model years with the modified rear-integrated suspension layout. Confirm your car carries this rear-integrated specification before ordering, as the damper valving and mounting are matched to that subframe design rather than the standard rear geometry.

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Get the ride height and damping range matched to how you actually drive your Civic Si – configure yours below.