XYZ Racing Circuit Master Coilovers — Porsche 991 GT3 RS 2016-2026

The 991 GT3 RS carries most of its weight over the rear axle, then adds a front splitter and adjustable rear wing that only start doing real work once you’re committed to a corner at speed. That combination rewards a suspension set-up that holds its damping curve steady as aero load builds and tyre temperatures climb, lap after twenty-minute session – not one that starts to fade once the car’s been circulating for a while.

The XYZ Racing Circuit Master coilover kit for the Porsche 991 GT3 RS (2016-2026) is built around that scenario rather than a single quick blast on cold tyres. It swaps the factory suspension for a fully mechanical, manually adjustable platform, so the balance between that rear-biased mass and the front-end aero stays something you set deliberately, not something a control module decides for you.

What this coilover does for your 2016-2026 Porsche 991 GT3 RS

With three external adjustment knobs and a claimed 9720 combinations of damping, you can separate low-speed compression (kerbs, trail-braking into slower corners) from high-speed rebound (compressions and crest changes at speed) rather than compromising on one universal setting. That range matters on a car whose rear tyres already carry the majority of the load under acceleration out of a corner – a firmer, more consistent rear platform helps put that power down without the rear stepping wide mid-exit. Up front, sharper turn-in response means the splitter starts generating usable downforce earlier in the corner instead of after you’ve already committed to the apex. Ride height adjustment also lets you correct the front-to-rear rake as the aero package is set up, which affects how quickly that front-end downforce actually arrives.

About the Circuit Master coilover

Circuit Master is XYZ Racing’s damper for sustained circuit lap-time work, developed and run through XYZ’s own racing teams across multiple international championships rather than built only for a single track day. The headline figure is 9720 distinct damping combinations across the three external knobs, giving a far finer window of adjustment than a basic two-way unit. The construction uses a small-passage oil circuit inside the damper body; under hard, repeated kerb strikes or big compressions this can produce a faint noise as oil moves through that passage, which is a normal characteristic of the design rather than a fault, and it isn’t a concern the kit is engineered to run through repeated track sessions where the bumps are part of the surface, not an occasional pothole.

Fitment for the Porsche 991 GT3 RS (2016-2026)

This kit is specified for the Porsche 991 GT3 RS, chassis code RS, covering the 2016-2026 production span. Confirm your build year falls within that range before ordering, as damper length and mounting points are matched to this specific chassis generation rather than the wider 991 range.

What buyers also search for

• Porsche 991 GT3 RS coilover upgrade for repeated track sessions, not just one fast lap
• 991 GT3 RS suspension set-up for rear-biased weight and front-splitter aero balance
• XYZ Racing Circuit Master damping adjustment range for the 991 GT3 RS
• Porsche 991 GT3 RS ride height and rake adjustment for aero-dependent handling

Pick your damping and ride-height spec for the 991 GT3 RS below, and configure yours to match how you actually use the car on track.