HKS Exhaust Joint Pipe 2013-2021 BRZ / 2013-2016 FRS / 2017-2021 GT86

The HKS joint pipe is designed to fit between the primary and secondary catalytic converters, addressing the restrictive bottleneck of the stock D54 pipe. By increasing the diameter to D60, this pipe greatly improves exhaust efficiency, making it an ideal complement to bolt-on turbo kits.

Unlike the stock D54 pipe, which features intentional dents to prevent interference with other vehicle components, the HKS joint pipe is manufactured without these dents and with a larger bend radius. This design reduces exhaust backpressure, enhancing flow and ultimately increasing engine power.