A "quality" exhaust system maximizes performance gains by design. Both Test Pipes and Downpipes, like the FLASHARK G37 Test Pipes and 370Z Downpipe, are designed to increase horsepower. By improving exhaust flow and reducing restrictions, they can add 10 to 20 horsepower on average, with noticeable gains during high-performance driving. Test Pipes are primarily used in place of catalytic converters and are designed to completely eliminate catalytic converters to reduce exhaust drag and increase power output, typically used in track and high performance applications. What an exhaust sounds like is typically the number one factor when choosing a system.

From our in house SPDZ1 Brand, to our constantly growing in stock inventory, we strive to make our customer service and ease of purchase stand out from the rest! We are also one of the largest automotive part financing providers anywhere in the United States, and continue to provide more options for our customers every year. We love what we do, and it shows in every product we sell and every new customer who becomes a part of our Speedzone Family. Our customers are delighted with the catless test pipe 370z system which gave an improvement in exhaust flow and horsepower.

I highly recommend them for all your performance needs. ISR Performance Parts, LLC (Formally ISIS Performance NA, LLC.) constantly designing and delivering new products; finding innovative solutions to meet performance industry needs. Nissan 370z test pipes directs the produced exhaust gases to the exhaust system.

KSP Exhaust Pipes enhance your Nissan/Infiniti's engine performance and sound. By installing KSP Performance's Exhaust Downpipe, you'll experience increased horsepower and a superior exhaust note. It's user-friendly and convenient with a direct bolt-on design requiring no modifications. Refunds for returned products are issued with 3-5 business days once they are received by our warehouse and inspected. Refunds will be issued via the same payment method originally used to place the order (Credit Card, PayPal, Google, Affirm, Check).

Kit includes blow out proof Stainless Steel 304 crush gaskets at the inlet and outlet for a permanent leak free seal. Socal Z Specializes in Nissan, Datsun and Infiniti Parts. Socal Z strives to offer the best in parts selection, service, and performance for your Nissan 300ZX, 350Z, 370Z, Infiniti G35, g37 test pipes. Located Southern California, Socal Z serves customers from around the world with online parts sales to in house performance builds, parts installations and tuning. LTL and Freight Shipments will cover the delivery of most oversized items, including but not limited to, body kits, hoods, trunks, spoilers, doors, roll cages.