HKS Super Manifold Catalyzer GT-Spec - Toyota GR86 & Subaru BRZ

This product uses a low-density metal catalyst, as opposed to the genuine fine ceramic catalyst. Exhaust resistance is greatly reduced. While using a low-density cell, the blending ratio of precious metals is optimized to comply with the 2018 exhaust gas regulations. We have obtained certification from a third-party organization. Adopts a 4-2-1 isometric layout. The complete isometric layout is realized by repeatedly examining the layout of the four parts. The head side flange has been redesigned to improve the stepped portion where the pipe is inserted, and a newly designed flange has been adopted.