Unlock maximum performance with REDSTAR Test Pipes, designed for Audi models equipped with the 3.0 TFSI supercharged engine. These high-flow test pipes replace restrictive catalytic converters, improving exhaust flow and boosting engine efficiency. Built with the strongest materials for lasting durability, they come backed by a lifetime warranty....

REDSTAR EXHAUST downpipes for the Audi B9 RS5 / F5 RS4 with Porsche 2.9L. Our downpipes utilize a big bore design with smooth transitions for maximum flow efficiency. Long cones used to reduce the OEM 127mm turbo flanges to 89mm main diameter, which then goes down with second transition to 76mm. B9 RS5 Downpipes Video F5 RS4 Downpipes Video B9 RS5...

Upgrade your Audi C7 4.0T with REDSTAR EXHAUST Performance Downpipes, designed to fit Audi S6, RS6, S7, RS7, A8, and S8 models with the 4.0T TFSI engine. These high-performance downpipes feature an OEM X-crossing design and OEM-spec bottom flanges for a seamless fit and easy installation. Engineered to optimize exhaust flow, REDSTAR downpipes unlock...

Introducing REDSTAR EXHAUST Stelvio Downpipes, engineered specifically for the Quadrifoglio model with the powerful 2.9 F154 Twin Turbo V6 Engine. These high-performance downpipes enhance exhaust flow, increase horsepower, and deliver a deeper, more aggressive sound. Perfectly crafted for enthusiasts looking to unleash the full potential of their Stelvio...

Unlock the full potential of your turbocharged NSX supercar with Redstar Heat Shielded Downpipes. Designed for performance, our downpipes significantly reduce turbo lag and improve spool-up time, delivering faster response and increased horsepower. Maximize exhaust flow, eliminate excessive backpressure, and experience a smoother, more powerful driving...