Fabspeed Porsche 981 Cayman GT4 / Boxster Spyder RENNKRAFT® Modular Headers with HJS Catalytic Converters (2015-2016) Fabspeed Chevrolet Corvette C8 Z06 Titanium Valvetronic Cat-Back Exhaust System (2023+) If you want to know

If you want to know more

Ultra-lightweight design to reduce vehicle weight as much as possible

smiles per gallon gained is entirely our fault

Catalysts Manifolds

we have gone beyond replicating the original RS intake

Fabspeed Porsche 981 Cayman GT4 / Boxster Spyder RENNKRAFT® Modular Headers with HJS Catalytic Converters (2015-2016) Fabspeed Chevrolet Corvette C8 Z06 Titanium Valvetronic Cat-Back Exhaust System (2023+) If you want to knowFabspeed Porsche 981 Cayman GT4 Boxster Spyder RENNKRAFT Modular Headers with HJS Catalytic Converters (2015 2016). These modular headers are the perfect solution for any Cayman or Boxster. Our patented RENNKRAFT modular design features a quick release V band connector that allows the owner to easily swap between our German made HJS 200 cell cats and a cat bypass straight pipes for track use. RENNKRAFT, translated from German is race power. These