28/08/2008 08:37. Made of T304 stainless steel, Password:JDM's True2Form test pipes are designed with form and function in mind. All True2Form test pipes are telescopic, two-piece designs that are clockable in order to accommodate most Honda applications. True2Form test pipes are 2.5 inches in diameter-the largest diameter currently available for Honda-specific applications. Password:JDM test pipes are offered either in resonated or straight-flow designs and... // Honda Tuning Magazine