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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.
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.
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.
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.
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.
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.
Reference: 174
Brand: F4U
High-performance stainless steel exhaust manifold for Renault 5 GT Turbo, equipped with a thermal shield for enhanced protection. Manufactured with precise TIG welds and designed with oval-shaped holes that eliminate the turbulence caused by round holes, significantly improving engine power delivery. Thoroughly studied and tested on a dyno, this manifold...
Reference: 641
Brand: F4U
The exhaust manifold for the R5 GT Turbo made of stainless steel is an essential component for optimizing your engine's performance. This model, a tribute to the Tour de Corse, includes a thermal blanket to improve efficiency and protect nearby components from heat. TIG-welded and designed with oval ports, it prevents turbulence, ensuring optimal power...
Reference: 367
Brand: F4U
Optimize the performance of your Renault 5 GT Turbo with our 50mm exhaust pack. This value pack includes a header, downpipe, and complete exhaust section, all made from high-quality stainless steel. Designed for high performance, these components have been tested on a dynamometer, demonstrating a significant increase in engine performance. Enhance your...
Reference: 398
Brand: F4U
High-performance exhaust pack for R5 GT Turbo. Includes manifold, down pipe, and a complete 2,36" exhaust system with trumpet end. All exhaust parts are made from 304L stainless steel and TIG welded. Tested on a dynamometer, they significantly increase engine performance. Improves gas flow and reduces backpressure, providing more efficient and powerful...
Reference: 554
Brand: F4U
Opel Speedster 76mm 3" Turbo Exhaust Pack without Catalytic Converter, specifically designed for those seeking to maximize the performance of the Z20LET Turbo engine. This pack does not include a catalytic converter, further optimizing gas flow and reducing backpressure. It includes a manifold, downpipe, and full system with a removable silencer. Made...
Reference: 501
Brand: F4U
Enhance your Renault 5 GT Turbo with our high-performance exhaust pack featuring 63.5mm diameter components. This pack includes a manifold, down pipe, and a full exhaust system with silencer, all crafted from stainless steel and TIG-welded in Spain. Dyno-tested to significantly boost engine performance, these components ensure efficiency and durability....
Reference: 444
Brand: F4U
Exhaust pack with heat shield 50mm Renault 5 GT Turbo 3 units made of stainless steel, designed for high performance. Includes manifold, downpipe with heat shield, and 50mm elbow pipe, in a pack of three units. Dyno-tested, it significantly improves engine performance, optimizing gas flow and reducing engine bay temperatures.
Reference: 549
Brand: F4U
Exhaust pack with 63.5mm flex pipe Renault 5 GT Turbo V-band silencer is built for performance enthusiasts. It features a high-quality flex pipe, V-band connection, and optimized silencer for efficient flow and enhanced sound. Easy to install, it’s perfect for upgrading your R5 GT Turbo. Get yours and enjoy a unique driving experience!
Reference: 443
Brand: F4U
Exhaust pack with heat shield 60mm Renault 5 GT Turbo 3 units made of stainless steel, designed for high performance. Includes manifold, downpipe with heat shield, and swan neck 60mm, in a pack of three units. Dyno-tested, it significantly improves engine performance, optimizing gas flow and reducing engine bay temperatures.
Reference: 553
Brand: F4U
Opel Speedster 76mm 3" Turbo Exhaust Pack with Catalytic Converter designed to maximize the performance of the Z20LET Turbo engine. Includes manifold, downpipe, and full system with a 300-cell Euro 3-4 high-flow metallic catalytic converter for improved gas flow and reduced backpressure. Made from 304L stainless steel with TIG welds, ideal for boosting...
Reference: 500
Brand: F4U
Exhaust pack with heat shield 60mm Renault 5 GT Turbo 3 units V-band made of high-quality stainless steel. Includes manifold, downpipe with heat shield, and swan neck 60mm, with V-band connection for quick and secure installation. Dyno-tested to optimize gas flow, reduce heat, and significantly enhance turbo engine performance.
Reference: 402
Brand: F4U
Exhaust pack with heat shield 50mm Renault 5 GT Turbo made of stainless steel, designed for maximum performance. Includes manifold, downpipe with heat shield, and 50mm full exhaust line, all TIG-welded in Spain by F4U. This pack has been dyno-tested, achieving notable improvements in flow and engine response. Perfect to take your R5 GT Turbo to the next...
