This is the original Twin Scroll turbo kit for the Alfa Romeo 4C. First developed by Alfaworks UK to work with their bespoke tubular intake & exhaust — this kit has been copied, but not equaled. Installed and tested extensively on our USA cars for effective track day and real racing usage - these kits are paramount to bringing quicker spooling, much higher overall boost and max power to the Alfa 4C.

We recommend combining these with the new Alfaworks SCS GDi6 standalone ECU for maximum tunability, available here at Alfa9.

Choose SIZE A for all stock motor 4C applications and approximately 340 hp on a standard 4C motor.

SIZE B requires more supporting mods. SIZE X is an Alfa9 special turbo optimized for max hp levels and requires extensive mods and special tuning to gain the most hp. X is considered full-race only, contact us for details.

All sizes are spec’d with the T4 split flange, 0.80 a/r.

Kit includes:

• -BorgWarner EFR Twin Scroll (choose size in dropdown)

• -Tubular racing intake manifold

• -Tubular 2-piece downpipe

• -Gaskets

• -V-band exhaust clamp

  Custom ceramic coating options available.

  Contact us with any questions.