About center pipe Diameter of center pipe is the portion that has the largest diameter. (Excluding silencer and tip.) It is the condition with stock suspension. Minimum road clearance between HKS muffler (Any parts included in the kit) and road surface. Therefore, it may be different from actual road clearance of the vehicle. The data is basically the condition with stock suspension. However, please understand that some items have data with low down spring or ride height adjustable suspension kit. Caution: Hook, bracket, stay may be changed without prior notice. Cert. No. JARI10200001P Make TOYOTA Model GR SUPRA Engine B58 Model Year 2020 – Shape of muffler SSR (Super Turbo Muffler) Main material S304 Diameter of tip 110 L&R Diameter of center pipe 85-70 x 2(*1) Close noise level Stock 85 HKS 87