PLM Catted Unequal Length Header - BRZ / FR-S / 86 / GR86

This is the PLM header I would choose when you want the uneven boxer sound and improved exhaust flow but do not want to remove the catalytic converter completely. Its one-piece unequal-length layout combines a true 4-1 merge collector with a high-flow catalyst, making it the more street-conscious option in PLM's header lineup.

The clever part is the rotating two-bolt collector flange. It lets the same header connect to both first-generation 2013-2021 cars and the 2022+ BRZ/GR86 exhaust layout, so this is also useful when you want one catted design that covers either generation.

Why I would choose it

• 304 stainless-steel construction
• True 4-1 merge collector
• Integrated EPA-compliant high-flow catalytic converter
• Rotating two-bolt outlet flange for first- and second-generation fitment
• One-piece unequal-length design
• Direct connection to the factory-location overpipe
• Designed to improve low- and midrange response and reduce the torque dip

Fitment

• 2013-2021 Subaru BRZ
• 2013-2016 Scion FR-S
• 2017-2021 Toyota 86
• 2022+ Subaru BRZ
• 2022+ Toyota GR86

Plan on tuning after a header change. PLM cites independent customer testing of up to 28 whp and 14 lb-ft on a supporting setup; results vary. EPA-compliant construction is not the same as a California CARB exemption, so confirm the emissions rules that apply to your vehicle before ordering.