N1 Exhaust System Minimal number of bends for maximum efficiency. High-end power. In the N-1 Endurance Race, efficiency is everything. With that in mind, the N-1 exhaust systems were born to satisfy the want for quick throttle response and to effectively handle the rigorous demands of high-horsepower engines. The pipes were engineered with the aid of sophisticated CAD systems to develop the straightest possible lines and least number of bends. The straight-through canister projects from the car at an angle, which helps smooth the exhaust flow. The canister is built from SUS 304 stainless steel and features a 115mm tip with aggressive style. The Super Silencer is included on selected models, which can reduce noise levels by up to 7 decibels. The N-1 Series Mufflers are available for both NA (naturally aspirated) and turbo-charged cars.

World Sport Exhaust System Top-of-class street muffler combining both style and performance. Mid to high-end power.The World Sport concept is A'PEX's interpretation of how each vehicle's exhaust system should have looked and performed right from the factory. Designed with the daily driver in mind, this exhaust series focuses on drawing out mid-range torque and engine response for optimal drivability on the street. The styling is subtle and elegant, but still retains characteristics of its racing origin. The result is an affordable cat-back exhaust system that makes the daily commute more enjoyable.

GT Exhaust Manifold. [header] High output exhaust manifold. Accommodates high-horsepower engines without sacrificing mid-range torque. GT Spec Exhaust Manifolds are designed and built to rigorous race specifications. The manifolds are constructed of highly polished SUS 304 piping and are TIG welded for durability and strength. The collector pipes at the exhaust ports are deburred and hand-ported for optimal exhaust flow. The 4-2-1 design is used for high horsepower gains without sacrificing mid-range torque like most 4-into-1 configurations.

GT/N-1 FRONT PIPE. Front Pipe engineered for race applications. Minimal exhaust flow restriction. A'PEX Front Pipes replace the factory downpipe and catalytic converter and significantly improve exhaust flow. Stainless steel flex joints are used to dampen the cat-back exhaust system from engine vibrations. A'PEX Front Pipes are available in two different grades. N-1 Front Pipes are manufactured using aluminized steel and treated with high-temperature titanium particle coating. GT Front Pipes are constructed entirely of SUS 304 stainless steel. A'PEX Front Pipes are for race use and only meant for use with Apex exhaust systems.