The Motordyne XYZ pipe – A super merge collector with multiple applications on Motordyne exhaust systems. Made of the highest quality components and craftsmanship, it is a design optimized on the dyno. The XYZ is more than just a Y-pipe. It is a modular exhaust part with many applications. Its a X pipe. Its a Y pipe. Its a Z pipe. It is the starting point of a fully variable exhaust system with many different configurations and applications. Naturally aspirated or for Forced Induction, the XYZ pipe can be used to build single, dual or True Dual X pipe exhaust systems.