HKS FRP GT Wing Spoiler - 2020+ A90 Supra

FRP GT Wing Spoiler for the 2020+ GR Supra

The HKS FRP GT Wing Spoiler for the 2020+ Toyota GR Supra is the rear wing element from HKS's Premium Body Kit, available separately for builds that already have the front and side aero or want to add rear downforce incrementally. FRP (fiberglass reinforced plastic) construction gives the wing the structural rigidity it needs to maintain its airfoil profile under aerodynamic load. A flexible wing loses efficiency as it deflects under pressure, and FRP provides the stiffness-to-weight ratio required for the wing to function as HKS designed it.

Specs & Highlights

• FRP (fiberglass reinforced plastic) construction
• Maintains airfoil profile under aerodynamic load
• Significant rear downforce contribution at speed
• Designed to balance front aero components in the full Premium Body Kit
• Requires painting before installation
• Fitment: 2020+ Toyota GR Supra (A90)

Wing Dimensions: 250mm Chord, 1,420mm Span

The GT wing chord length is 250mm and the wing span is 1,420mm, running nearly the full width of the Supra trunk lid. At the standard mounting angle the wing generates approximately 40–45 kg of downforce at 200 km/h (124 mph). Mounting height above the deck lid is 180mm at the lowest setting, providing a clean exit angle for airflow over the C-pillar. The wing end plates are integral to the FRP layup, not bolt-on additions, which ensures consistent structural behavior across the full wing span.

FRP Construction and Structural Rigidity Under Load

The GT wing generates its rear downforce by creating low pressure above the wing surface and high pressure below, pushing the rear of the car toward the road. The efficiency of this depends on maintaining the wing's designed angle of attack and surface profile, which is why FRP construction is appropriate here. It holds its shape under the forces involved. Adjustable mounting options allow angle of attack tuning for different use cases.

Permanent Deck Lid Modification Required

This wing can be paired with the HKS Premium Body Kit pieces or used as a standalone rear downforce component on a Supra with factory or other aftermarket front aero. The wing mounts through the deck lid and requires drilling. This is a permanent modification. Factor the installation into your planning accordingly.

The FT Breakdown

The FRP GT Wing is the statement piece for A90 Supra builds that are being taken seriously at the track. HKS does not put their name on aero components that are purely decorative. The GT Wing works, and the engineering behind it reflects the same philosophy as the rest of the HKS Supra lineup. A 250mm chord and 1,420mm span means the GT wing is a serious aerodynamic device, not a visual accessory. The 40–45 kg rear downforce contribution at 200 km/h is the difference between a car that pushes wide at the rear in fast corners and one that stays planted. FRP is the correct material for this application — carbon fiber would be lighter but the rigidity requirement for the airfoil profile to hold under load is the primary specification, and FRP delivers it.