Ronnie Fieg, the founder of the New York-based clothing company Kith, wanted to give his 1989 BMW M3 E30 a new lease of life, so commissioned BMW to completely rebuild the car from the ground up using BMW Classic Parts, combined. The result is the one-off BMW M3 E30 Ronnie Fieg Edition.

All of the original components were sourced from BMW's archives to ensure every part is period correct. Once the meticulous rebuild was completed, the car was modified with some Kith-inspired touches including Kith BMW roundel emblems on the hood, trunk, rims, and steering wheel, along with Kith badging on the trunk and a Kith monogram leather interior.

BMW didn't stop there, as the German automaker also collaborated with Kith to create a one-off 2021 BMW M4 Competition dubbed the M4 Kith Concept to "bridge the past and the present". Like the M3 E30, the one-off M4 Competition is finished in Cinnabar Red, a shade that's no longer offered by BMW.

The other design details were also carried over, including the Kith badging on the trunk, and monogram leather interior with illuminated Kith headrest badges. No modifications were made under the hood, however, meaning the M4 Kith Concept is powered by a 3.0-liter twin-turbo six-cylinder engine producing 503 hp and 479 lb-ft of torque.

This setup enables the performance coupe to sprint from 0-62 mph in 3.8 seconds and hit a top speed of up to 180 mph. "The tie-up with Ronnie Fieg and Kith is a great opportunity for BMW M GmbH to bridge the gap between the original BMW M3 and our new BMW M4 Competition Coupe from the sixth generation of this iconic model range," said BMW M CEO Markus Flasch.

Both models are strictly one-off creations and will not be for sale. The clothing company promises there is "more to come from Kith for BMW 2020," so it sounds like more one-off models are in the pipeline.