STI | Rear Spat Spoiler BRZ Prefacelift | BRZ I |-primed-

STI Rear Spats – Subaru BRZ VFL (SG517CA300)
Original Subaru STI aero – precise fitment, premium quality, subtly sporty.

The STI rear spats with part number SG517CA300 are the factory-developed aerodynamic upgrade for the Subaru BRZ pre-facelift. No reproduction, no fiberglass replica – this is a genuine STI component from Subaru’s performance program, delivering the OEM-level quality you expect from factory aero parts.

Visually, the spats integrate perfectly into the rear bumper design and give the BRZ a lower, wider, and more dynamic appearance without being overly aggressive.

Technical Details

Subaru genuine part – STI aerodynamic component

Part number SG517CA300

Compatible with Subaru BRZ pre-facelift (2012–2016)

OEM plastic construction, impact- and weather-resistant

Plug & play fitment to the factory rear bumper

Supplied in primed condition, ready for paint

No ABE or certification included

Standard delivery in matte black plastic

Appearance & Design Effect

The STI rear spats extend the rear bumper slightly downward and outward, giving the BRZ a noticeably flatter and sportier stance. The design remains cohesive with the factory lines – this is not an extreme track-focused add-on, but rather OEM performance with understatement.

Painted in body color, the spats create a clean OEM+ look. In black, they provide a defined contrast against the bodywork and emphasize the lower edge of the bumper for a sharper visual effect.

Legality & Registration

There are no certification documents or approval papers available for this component.

Registration may therefore be difficult and depends on the individual inspector. As it is an original STI part, some inspectors may recognize it as a high-quality OEM component – however, approval cannot be guaranteed.

For track cars or dedicated performance builds, the part can be used without restriction.

Benefits

OEM-level fitment – no modification required

Subtle sporty appearance without exaggerated styling

High-quality plastic – no cracking issues typical of fiberglass replicas

Plug & play installation

Primed – fully customizable in any desired color

Conclusion

The STI SG517CA300 rear spats are one of the most refined ways to enhance the rear of the BRZ VFL. Not loud, not overstyled – but factory-inspired, functional, and cleanly executed.

For those who appreciate OEM performance with style.