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

Torque steer and front-axle load are the two things every Civic Si driver learns to manage the moment they get on the throttle out of a bend. The turbocharged, front-wheel-drive layout wants to tug the nose wide under power, and stock damping runs out of ideas the first time you push past a fast B-road pace. That’s the gap the Street Advanced coilover is built to close.

XYZ Racing’s Street Advanced kit for the Civic Si covers exactly that middle ground: enthusiast road driving with the adjustability to sharpen up for a track day without turning the car into something you dread commuting in. With 720 damping adjusting ways on tap, you have enough range to soften the ride for the school run and firm it back up for a Sunday blast, without swapping parts.

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

The 720-way damping adjustment is the headline feature here, and it matters most on a car like the Si where front-end grip and rear composure both shift depending on how hard you’re driving. Wind the front down and you cut the nose-dive under braking that exaggerates this car’s torque steer on corner exit. Firm up the rear and the Si’s chassis stops feeling like it’s playing catch-up mid-corner, holding a flatter attitude through direction changes. Because the range runs from comfort to circuit-capable in the same unit, you’re not locked into one setup – daily errands one day, a track day entry the next, adjusted from the same coilover rather than a compromise setting stuck in the middle. Ride height is also adjustable, so you can drop the stance to lower the centre of gravity without resorting to cut springs.

About the Street Advanced coilover

Street Advanced is XYZ Racing’s most popular line, developed over several years of in-house testing and proven across race series worldwide before it reaches a road car. It’s the model XYZ built specifically for drivers who split their time between normal road use and occasional track days, rather than a full race-only unit that punishes you on the commute. The 720 damping adjusting ways give a genuinely wide window between plush and aggressive, which is the point of the design – one coilover doing the job of what would otherwise need two separate setups. XYZ positions this as essential kit for anyone chasing real pace and real control rather than just a lower ride height, and the spec reflects that: enough adjustment range to keep pace with a driver’s growing confidence as they push the Civic Si harder.

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 range with the φ54 strut architecture and the modified rear integrated mounting this generation uses. Confirm your build year falls within that window before ordering, and check the modified rear-integrated mounting note against your car if you’ve had any prior rear suspension work done.

What buyers also search for

• Honda Civic Si coilover upgrade for road and occasional track use
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• Honda Civic Si ride height adjustable coilover kit 2017-2026
• Street Advanced coilover setup for a daily-driven Civic Si

Pick your damping range and ride height, then configure yours below to match this exact HN25-10 Civic Si fitment.