AST x MOTON Coilovers — Toyota GR86 / 86 & Subaru BRZ

Why AST x MOTON Suits the GR86 / BRZ — The MacPherson Camber Problem

The GR86 and BRZ are unusually rewarding cars to set up properly, and unusually punishing of poor setup choices. The shared platform uses MacPherson struts at the front and double-wishbones at the rear — and the front strut design has a specific limitation that defines the entire aftermarket suspension question on this car.

MacPherson strut geometry has poor camber gain. Under cornering load, the wheel actually loses negative camber as the suspension compresses — exactly the opposite of what you want when the outside tyre is loaded. The factory GR86/BRZ runs near-zero static camber, which is why so many owners report heavy outer-edge front tyre wear after track days. The platform genuinely needs more static negative camber to compensate, and the only way to get it cleanly is through camber-adjustable front top mounts.

That's the AST x MOTON argument on this platform in one sentence: every kit ships with camber-adjustable front tops as standard. AST 5100 Competition, 5200, 5300, and the full MOTON range — all of them. You're not picking a coilover and then bolting on aftermarket camber plates as an afterthought; the geometry comes with the kit.

Once that's solved, the rest of the AST/MOTON proposition lines up: monotube construction, Dutch-engineered valving, fully rebuildable and revalvable for the life of the car, spring rates and damping spec'd to your build before manufacture. A car this responsive to setup deserves suspension you can actually develop with it.

The AST x MOTON Range for the GR86 / BRZ

Both AST and MOTON have dedicated SKUs for the platform. The MOTON listing covers all four chassis codes (ZC6/ZN6/ZD8/ZN8); the AST listing covers ZN8/ZN6 (Toyota generations) with BRZ ZC6/ZD8 fitment available made-to-order through the same product. The full tier ladder is available either way:

• AST 5100 Competition (Inverted): The flagship single-adjust setup. Inverted strut for lateral load handling, camber-adjustable front tops, rebound damping. The benchmark fast-road-plus-trackday choice.
• AST 5200 Series (2-Way): Independent rebound and compression with remote reservoirs. Where serious GR86/BRZ trackday and HPDE builds tend to land — separating compression from rebound damping is genuinely useful on a light, balanced chassis.
• AST 5300 Series (3-Way): Rebound, low-speed compression, and high-speed compression each on its own knob. The top of the AST range, suited to time attack and dedicated track work.
• MOTON 1-Way Clubsport: Non-inverted monotube, 1-way 12-position rebound, camber-adjustable front tops. The motorsport-tier entry.
• MOTON 2-Way Clubsport: Inverted, monotube, independent rebound and compression with remote reservoirs. 15-step damping adjustment. Strong choice for serious club racing or time attack.
• MOTON 3-Way Motorsport: Inverted, monotube, elevated top guide and helper piston for low-friction operation. Independent rebound, low-speed compression, and high-speed compression. The damper spec for GR86/BRZ programmes running aero, slicks, or full motorsport use.

Spring rates and valving are spec'd to your build at the order stage — talk to us before ordering and we'll match the kit to street, club, or competition use.

Camber Setup — What the GR86 / BRZ Actually Needs

Once you've fitted AST or MOTON, you have the geometry range to actually tune camber. Our camber setup guide goes into the full detail, but the GR86/BRZ-specific recommendations are:

• Street: -1.5° to -2.5° front, factory rear (around -1.5° to -1.7°). Zero front toe.
• Track day / HPDE: -3.0° front, -2.0° rear. Achievable with AST/MOTON adjustable tops.
• Dedicated track: -3.5° to -5.0° front, -2.5° to -3.5° rear. Requires AST/MOTON tops plus Hardrace adjustable rear lower control arms for matched rear adjustment.

Two more reads worth your time before ordering:

• 1-Way vs 2-Way vs 3-Way Adjustable Damping Explained — what each adjuster controls and where the AST 5100, 5200, and 5300 sit.
• How to Adjust AST & MOTON Coilovers — the practical guide to where the knobs are and how to develop a baseline.

After installation, a full four-wheel alignment is essential. Tell the alignment tech your camber target before they put the car on the rack — generic factory-spec alignment after a coilover install will leave grip on the table.

Pair With Your GR86 / BRZ Build

The GR86/BRZ has one of the strongest aftermarket ecosystems we stock — partly because of how popular the platform is for trackdays, partly because every component has been thoroughly developed across two generations of OEM parts inheritance.

• Big Brake Kits — Front: Alcon TA6+ Front BBK 355×32mm (from $4,390), Paragon 4-Piston Front BBK with PA055 calipers (the same ones running in the 25 Hours of Thunderhill) — both engineered for the BRZ/86/GR86 front-end.
• Big Brake Kits — Rear: Paragon 4-Piston Rear BBK with PA025 calipers — purpose-built for serious trackday and competition use.
• Brake Pads — Street: DIXCEL Front Pads in M Type for low-dust street, S Type for lightweight track use — see the DIXCEL compound guide for full breakdown.
• Brake Pads — Track: Endless MX72 Plus for street + track all-rounder use, or DIXCEL Z Type for trackday-focused setups.
• Brake Anti-Squeal: DIXCEL Anti-Squeal Shims (Front) and Rear — three-layer stainless/resin shims that suppress the high-frequency vibration causing brake squeal.
• Chassis: Hardrace adjustable rear lower control arms for matched rear camber adjustment when running -3.0°+ front.
• Exhaust — ZN6/ZC6 (FA20): Tomei EXPREME Ti TYPE-80 — purpose-built for the FA20 with a sub-muffler layout that smooths the well-known mid-range flat spot, or Tomei Ti RACING for track-focused builds.
• Exhaust — ZN8/ZD8 (FA24): Tomei Ti SPORTS for street builds (JASMA-certified, neighbour-friendly volume), or Ti RACING for track-focused setups.

Frequently Asked Questions

Which AST or MOTON series is right for my GR86 / BRZ?

For a street-primary car with occasional trackdays, AST 5100 Competition is the benchmark. For a regular HPDE or club-day car, AST 5200 2-way is where most serious GR86/BRZ builds land. For time attack, dedicated track use, or competition-spec builds with aero, MOTON 2-way or 3-way is the correct spec.

Why does the GR86 / BRZ specifically need camber-adjustable top mounts?

The MacPherson strut front geometry has poor camber gain — under cornering load, the wheel loses negative camber rather than gaining it. Combined with near-zero static camber from the factory, this causes the heavy outer-edge front tyre wear most GR86/BRZ owners see after track days. Camber-adjustable top mounts let you dial in -2.0° to -3.0°+ static front camber to compensate, restoring proper tyre contact patch through the corner. AST and MOTON include these as standard on every kit for the platform.

Does the kit differ between ZN6/ZC6 and ZN8/ZD8?

Yes. The ZN8/ZD8 (2022+, FA24) has revised geometry, different spring rates, and a heavier overall package than the ZN6/ZC6 (2012–2021, FA20). AST and MOTON build platform-specific kits — confirm your generation before ordering and we'll spec correctly. The MOTON product listing covers all four chassis codes (ZC6/ZN6/ZD8/ZN8) on a single page; select your generation at the variant stage.

Are AST and MOTON coilovers rebuildable?

Yes. Every damper is fully serviceable. Seals replaced, oil refreshed, valving respec'd — for a new spring rate, aero package, or shift from street to competition use. A well-maintained set lasts decades rather than being a consumable, which matters on a car likely to see hard use over its life.

What's the lead time?

AST and MOTON are built to order at the Dutch facility. Typical lead time is around four weeks for the standard AST range; MOTON and custom-spec AST builds can run longer. If you're targeting a specific event, talk to us before ordering — we can sometimes expedite a build, and occasionally there's stock available.

Is the AST listing available for BRZ ZC6 / ZD8 even though the title shows ZN8 / ZN6?

Yes. The platforms share suspension geometry, so the AST kit fits all four chassis codes. The product page is titled for the Toyota generations, but the BRZ ZC6 and ZD8 are direct fitments — confirm your variant when ordering and we'll spec correctly.

Do I need a wheel alignment after fitting?

Yes, always. Any ride-height change alters camber, toe, and caster — so a full four-wheel alignment is essential. On the GR86/BRZ specifically, take advantage of the new front camber adjustment range to dial in the static camber the platform actually wants. See the camber setup guide for street-vs-track recommendations.