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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: 138
Brand: F4U
Opel Speedster 3" downpipe without silencer and catalyst, designed for those looking for a more free-flowing exhaust and higher gas flow. This version is geared towards track use, providing a faster engine response by eliminating both the silencer and the catalyst. Made from 304L stainless steel, it ensures durability and performance under demanding...
Reference: 657
Brand: F4U
Swan neck for R5 GT Turbo made of high-quality stainless steel with 2 V-band connections. The connection to the Down pipe is 2.5" and the outlet is 2.5". This essential component features a 2,5" diameter tube, designed to maximize exhaust flow and significantly improve engine performance. Ideal for automotive enthusiasts seeking durability and efficiency...
Reference: 684
Brand: F4U
First section exhaust homologated in Spain for Renault 5 GT Turbo, manufactured by F4U. Includes flex pipe, silencer, and standard flange, designed in 304L stainless steel for durability and superior performance. Improves gas flow, reduces noise, and ensures easy and efficient installation. European quality for a perfect fit.
Reference: 492
Brand: F4U
Swan neck R5 GT Turbo with V-band 60mm and thermal blanket made of stainless steel, designed for demanding engines. The V-band connection ensures a perfect fit, while the thermal blanket helps reduce temperatures in the engine bay and underbody, improving performance and safety. Ideal for custom exhaust systems and tuned engines.
Reference: 486
Brand: F4U
Opel Speedster 3" turbo Z20let connection pipe with catalyst made of 304L stainless steel, featuring a Euro 3/4 300-cell catalyst. Designed to improve gas flow and increase engine power. This 3" pipe is compatible with the Z20LET engine and ensures easy installation. Manufactured with high-quality materials and tested in demanding conditions, it ensures...
Reference: 485
Brand: F4U
Opel Speedster 3" Turbo Z20LET downpipe made of high-performance stainless steel, specifically designed to enhance engine performance. Compatible with the Turbo Z20LET engine, this downpipe optimizes exhaust gas flow and increases power. Manufactured with TIG welding for durability, it’s the perfect solution for your Opel Speedster. Easy to install and...
Reference: 685
Brand: F4U
Final exhaust section for Renault 5 GT Turbo made from 304L stainless steel, with an oval trumpet finish and with silencer. This 2" system is homologated in Spain, designed to deliver a distinctive sporty sound and improve engine performance. Perfect for enthusiasts seeking maximum durability and a bold, competitive look.
Reference: 686
Brand: F4U
Final exhaust section for Renault 5 GT Turbo made from 304L stainless steel, with an oval trumpet finish and without silencer. This 2,36" system is homologated in Spain, designed to deliver a distinctive sporty sound and improve engine performance. Perfect for enthusiasts seeking maximum durability and a bold, competitive look.
Reference: 970
Brand: F4U
Rear exhaust section Renault 5 GT Turbo 2.5", made of stainless steel to ensure strength, performance and an excellent visual finish. It features a non-homologated integrated silencer and a straight tailpipe of 2.87", designed to optimise gas flow and deliver a balanced sporty sound. A precise component developed for Renault 5 GT Turbo enthusiasts who...
Reference: 805
Brand: F4U
Opel Speedster Downpipe 2.5" 300-cell catalyst in stainless steel, designed to maximize gas flow and enhance the performance of the Z22SE engine. Its 300-cell catalyst ensures compliance with emissions regulations and greater efficiency. Compatible with OEM and Tullet systems, it offers more power without compromising regulations, guaranteeing a...
Reference: 362
Brand: F4U
Opel Speedster 3" downpipe 300 cell catalytic converter made of stainless steel with high performance, designed to optimize gas flow and improve Z22Se engine performance. This downpipe includes a 300 cell catalytic converter, ensuring compliance with emissions in the vehicle technical inspection, providing cleaner and more efficient performance....
Reference: 364
Brand: F4U
Enhance your Renault 5 GT Turbo's performance with this dual-tube downpipe with original flange and welded heat shield, crafted in 304L stainless steel by F4U. Optimize exhaust flow and boost engine power. Lightweight, durable, and easy to install. Make sure to buy the original only at Weldracingparts!
