XYZ Racing Street Advanced Coilovers — Subaru IMPREZA WRX/ WRX STI AWD 4WD 2015-2021

Symmetrical AWD keeps the WRX and STI planted, but that same drivetrain adds mass over the front axle and a rear diff that needs to load evenly through a corner exit. Stock dampers on this chassis are tuned for a broad customer base, which means they let the nose dive under trail-braking and let the rear squat unevenly when the STI’s DCCD and centre diff try to send power rearward on the way out of a bend.

The XYZ Racing Street Advanced coilover replaces that compromise with a height-adjustable, damping-adjustable platform built for exactly this use case: fast road driving with the option of a track day, without turning the car into something unpleasant on a Tuesday commute. For a 2015-2021 WRX or WRX STI, that’s the difference between a car that leans on its springs and one that uses its AWD traction properly.

What this coilover does for your 2015-2021 Subaru Impreza WRX/ WRX STI AWD 4WD

With 720 damping adjustment positions, you can set the front end firmer to control dive under braking into a hairpin, then back off compression on the rear so the STI’s rear differential can put power down cleanly out of the exit rather than skipping over mid-corner bumps. Lowering the ride height brings the centre of gravity down across all four corners, which matters more on an AWD car carrying extra driveline mass than on a lighter front- or rear-drive equivalent. Sharper turn-in response comes from reduced body roll, which is exactly where a stock WRX/STI loses composure during quick direction changes on a B-road or a technical circuit like Cadwell or Oulton Park. Ride quality stays adjustable rather than fixed, so the same car that does a trackday on Saturday can be softened for a motorway run on Sunday.

About the Street Advanced coilover

XYZ Racing’s Street Advanced sits at the core of their coilover range, developed over years of iteration and run by race teams in competition worldwide before the settings filtered down to this street-focused version. It’s built around 720 discrete damping positions, giving a far finer resolution than the 16- or 32-way adjusters found on cheaper kits, so you can find a setting between "comfortable" and "compliant on track" rather than jumping between two extremes. The construction is aimed squarely at drivers who want to cover normal road use and occasional track days from a single set of dampers, rather than swapping parts between the two. Height adjustment lets you set stance and corner weighting independently of spring preload, and the damping range is wide enough to suit both a daily-driven WRX and a track-focused STI on the same platform.

Fitment for the Subaru Impreza WRX/ WRX STI AWD 4WD (2015-2021)

This kit is built for the SU12-chassis Subaru Impreza WRX and WRX STI, AWD, model years 2015 through 2021. It’s specified for the standard AWD drivetrain layout on this generation, so no additional driveline modification is required to fit.

What buyers also search for

• Subaru WRX STI coilover upgrade for road and track use
• Subaru Impreza WRX suspension with adjustable damping for daily driving
• WRX STI lowering kit that keeps AWD handling balance intact
• Subaru WRX coilovers for 2015-2021 SU12 chassis
• Street Advanced coilover damping range for fast road Subaru builds

Pick your damping and height settings for your WRX or STI and configure yours below.