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FLAT-SIX
The “Stuttgart Flat-Six” t-shirt celebrates one of the most beloved generations of the 911: the Porsche 964. With clean, flowing lines and a minimalist rear-three-quarter illustration, this design captures the unmistakable stance and character of the air-cooled era.
Printed on premium cotton, it delivers a refined, timeless look — a perfect match for the engineering icon it represents. For enthusiasts who appreciate purity, heritage and the visceral charm of an air-cooled flat-six, this tee speaks for itself.
100% cotton
180g/sqm textile
Designed in Portugal
Free returns
Returns within 30 days receive a full refund.
Worldwide shipping
Ship anywhere, rates available at checkout.
10,000+ HAPPY CUSTOMERS
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Customer Reviews
Overall rating: 5.0 / 5 from 21 reviews.
I am satisfied with the products. Thanks for everything!
Andrei Florin D. 5/5 Verified
Muito bonita. Tecido delicado e de excelente qualidade.
Ana Rafaela S. 5/5 Verified
Prodotto ben fatto, magliette comode e molto belle, spedizione velocissima.
Mirko L. 5/5 Verified
Amazing quality
Alexandre C. 5/5 Verified
Love how it looks!
Adrian I. 5/5 Verified
alles super, alles OK!
Marcus M. 5/5 Verified
the shirts are very nice, they feel great, look great, feels quality, and designs are unique and stand out, i have ordered 2 shirts from petrol heart and love both of them, the shirt feels thick without looking like it
Leon V. 5/5 Verified
Porsche is a dream, the material is awesome.
János T. 5/5 Verified
Fits perfect Size XL, You got a new client :)
Arsénio Miguel L. 5/5 Verified
This is my another Porsche design tshirt from you. Nice and smooth lines on a black more to body tshirt. Love it!
Marek K. 5/5
I have this t-shirt in second edition and from the first one (three years ago) this has different print method (a bit rougher but looks more robust for long-term use) and it has much better, more rleaxed fit (before it was tighter around shoulders) as other new tees and it seems more comfy which is great that all this got better over time :) Also great mini-print behind the neck from the inside with logo and size - great details on many shirts :) Big thanks for that you're evolving :) Happy customer greets from Prague, Czech republic!
Jiri P. 5/5 Verified
Perfect Service - as simple as that!
Bjoern P. 5/5 Verified
The T-Shirt and design are awesome, bought this as a Christmas gift and am very happy that it was a success.
Carlos Filipe L. 5/5 Verified
Amazing quality!
Lilly P. 5/5 Verified
Vera good
Idalécia H. 5/5 Verified
Fenomenal!
Fabio V. 5/5 Verified
Awesome shirts ,awesome art. Tope shelf
Lazar A. 5/5 Verified
Superb Design! Good Quality! Lovely Service! A unique design by Francisco Calado printed on a quality shirt! I'm stocked for these car-related products. There was a small issue with the delivery of one t-shirt but to compensate for this they offered me a free t-shirt. This is a growing company so kudos to the team! Thank you for the products and untill the next time. Sascha.
Sascha D. 5/5
09-Oct It costs a bit more than your average primark shirt but it feels great to wear and fits perfect in xxl. High quality product! worth the price + awesome customer service
Niclas H. 5/5
Flat-six T-shirt Very good quality product!
Leonardo 5/5