Discover the revolutionary line of high-performance exhaust systems and specialized motorsport parts from F4U at Weld Racing Parts. Each exhaust and component is meticulously designed to deliver unparalleled performance on the track. Join the automotive elite and maximize your vehicle's potential with the quality and precision of F4U.
Welcome to the Exciting World of F4U in Motorsport
Experience and Passion:
With over 25 years of experience, at F4U we have been passionately dedicated to the world of motorsport. Each day, our dedication and commitment drive us to reach new heights in manufacturing and developing competition parts across various categories.
Innovation and Constant Development:
At F4U, we firmly believe in innovation as the engine of progress. From conceptual design to final production, each part that leaves our facilities represents the culmination of years of research, development, and refinement.
Reliable Partner in Competition:
We are proud to be recognized as a reliable partner in motorsport competition. Currently, we have the honor of supplying parts for the prestigious FIA RX2e Championship in collaboration with QEV Technologies.
More Than a Brand, a Community:
At F4U, we are more than just a brand; we are a community of motorsport enthusiasts. Our shared passion for speed, the thrill of competition, and the constant desire for improvement unite us.
Join the Adventure with F4U:
We invite you to join us on this exciting journey in the world of motorsport. Whether you are looking for high-performance parts for your competition team or simply share our passion for speed, you are welcome to the F4U family.
Opel Speedster 76mm 3" compressor exhaust pack made of high-performance stainless steel. Includes manifold, downpipe, and full exhaust section with a removable silencer, allowing fiber replacement due to wear. Specifically designed for Z22SE engines and compatible with Tullet for Z22SE engine, this pack optimizes exhaust flow and significantly improves...
Opel Speedster 76mm 3" compressor exhaust pack with catalytic converter made of 304L stainless steel for high performance. Includes manifold, downpipe, full system, and a catalytic converter designed for Z22SE engines, compatible with Tullet. This system optimizes gas flow, boosts power, and features a removable silencer for easy maintenance. Tested on a...
Optimize your Renault 5 GT Turbo with our 60 mm savings exhaust pack with a heat shield. Made of stainless steel and TIG welded in Spain, this pack includes a manifold, down pipe, and full exhaust. Bench tested, it significantly improves engine performance. Ensures efficiency and durability with a sporty sound. Ideal for maximizing your vehicle's power...
Opel Speedster 76mm 3" compressor exhaust pack with 2 silencers made of 304L stainless steel for Z22SE engines. Includes manifold, downpipe, and full system with 2 removable silencers, making maintenance and fiber replacement easy. Compatible with Tullet, tested on a dynamometer to optimize exhaust flow and significantly improve engine performance.
Exhaust pack with heat shield 63.5mm Renault 5 GT Turbo V-band made of stainless steel, designed for high performance. Includes manifold, downpipe with heat shield, and a 63.5mm full exhaust line with V-band connection. Dyno-tested, it significantly improves gas flow and engine performance, perfect for taking your R5 GT Turbo to the next level.
Exhaust pack with heat shield and flex pipe 63.5mm Renault 5 GT Turbo V-band made of stainless steel, designed for high performance. Includes manifold, downpipe with heat shield, flex pipe, and 63.5mm full exhaust line with V-band connection. Dyno-tested, it significantly improves engine performance by optimizing gas flow and reducing heat.