RSI c6 ×Stage 4 Tuning
Autoclave-cured real and forged carbon fiber, designed, produced, and finished by hand in Italy—made to order for Audi, BMW, Porsche, and McLaren.
Carbon, shapedfor the car.
Browse the partnership catalog by marque, then narrow by exact chassis and component category.
Every surface, considered.
Choose a category, then jump directly into that marque’s matching pieces.
Italian craft.Motorsport process.
Autoclave pre-preg
Motorsport-grade carbon cured under controlled heat and pressure for crisp fitment, strength, and low weight.
Made to order in Italy
Each piece is designed, produced, trimmed, and hand-finished by RSI c6 for your selected specification.
Real & forged carbon
Choose classic woven carbon, forged carbon, gloss or matte finishes, and special leaf textures where offered.
Direct partnership
Stage 4 Tuning connects you directly to RSI c6 craft with US-side product guidance and ordering support.
“Designed, produced, and finished in Italy—specified for your car.”
Explore the collection →