5 Most Breathtaking Ferrari One-Offs Built for Private Collectors

For a chosen few, simply owning a Ferrari wasn't enough, so they commissioned the Italian carmaker to build these stunning one-off Prancing Horses.
2019 Ferrari P80/C 16 photos
Photo: Ferrari S.p.A.
2006 Ferrari P4/52006 Ferrari P4/52006 Ferrari P4/52012 Ferrari SP12 EC2012 Ferrari SP12 EC2014 Ferrari F12 TRS2014 Ferrari F12 TRS2014 Ferrari F12 TRS2018 Ferrari SP38 Deborah2018 Ferrari SP38 Deborah2018 Ferrari SP38 Deborah2019 Ferrari P80/C2019 Ferrari P80/C2019 Ferrari P80/C2019 Ferrari P80/C
Recently, Ferrari revealed the KC23, a bonkers one-off that looks like it was created for a video game.

Very much real, the mind-blowing, track-focused supercar that made its debut at Goodwood in June (2023) is loosely based on the 488 GT3 Evo race car with which it shares its V8 engine.

As Ferrari puts it, the KC23 is neither a concept nor a production car but a very special project commissioned by an unnamed collector who wanted a bespoke Prancing Horse.

Though it is the latest, this spaceship-looking supercar is not the first one-off created by Ferrari for one of its clients.

2006 Ferrari P4/5

2006 Ferrari P4/5
Photo: Ferrari S.p.A.
Though the first official modern one-off developed entirely by Ferrari was the 2008 P540 Superfast Aperta, the Pininfarina-developed P4/5 was the first modern one-off to don Prancing Horse badges.

Created for James Glickenhaus, the former movie director and owner of Scuderia Cameron Glickenhaus (SCG), the P4/5 started as a secret Pininfarina project back in the early 2000s.

Designed by Jason Castriota, it began as an idea for a modern reinterpretation of Ferrari's classic P-Series endurance prototypes.

Pininfarina was under fire for its latest Ferrari designs ( mainly the 612 Scaglietti), so Castriota took it upon himself to show that the legendary design firm still had it.

But, since the company was navigating murky financial waters, it needed someone to finance the project, so Castriota approached Glickenhaus - a well-known Ferrari collector - who agreed to finance and ultimately purchase the P4/5.

Eight months and $4 million later, the P4/5 made its public debut at the Pebble Beach Concours d'Elégance. In the meantime, Ferrari got wind of the project, and after seeing how awesome it looked, they agreed to let Pininfarina use Prancing Horse badges and call it a Ferrari.

The one-off was based on the Enzo, but featured over 200 custom-built components. Power came from the same 660-hp F140 B V12, but since it was 600 pounds (272 kg) lighter than the Enzo, the P4/5 was a bit faster than its limited-production sibling.

2012 Ferrari SP12 EC

2012 Ferrari SP12 EC
Photo: Ferrari S.p.A.
Slowly but surely, Ferrari began severing ties with its long-time partners Pininfarina, but before making it official, the carmaker's own Centro Stile began working with the design firm on several special projects.

One of these special projects was the SP12 EC, which got its EC initials from the legendary musician Eric Clapton, who commissioned its creation.

The famous guitar player, singer, and songwriter has always been passionate about the Ferraris, owning many models. However, his favorite had always been the Berlinetta Boxter.

Therefore, Clapton wanted a modern reinterpretation of his favorite model and commissioned Ferrari to build one just for him.

Based on the 458 Italia, the car received a bespoke bodywork that took several cues from the 512 BB, such as the two-tone paint, chrome front grille, or the silver-finished hood vent.

Performance-wise, it featured the same V8-powered drivetrain as the 458, but, for some reason, it reportedly cost well over $10 million to build - nearly three times more than the P4/5.

2014 Ferrari F12 TRS

2014 Ferrari F12 TRS
Photo: Ferrari S.p.A.
Ferrari's Centro Stile, led by Flavio Manzoni, soon took over the development of special, one-off projects, and one of its first creations was the F12 TRS.

Commissioned by a wealthy collector, the TRS was the Centro Stile's take on a modern 250 Testa Rossa, the famed race-bred sports car built in Maranello from 1957 to 1961.

Based on the F12berlinetta, the TRS received a barchetta body with redesigned front and rear ends - all of which were inspired by the shape of the original Testa Rossa (Red Head, in Italian).

Speaking about red heads, the TRS also received a redesigned hood with a plexiglass opening that revealed the red-painted rocker covers of the 740-hp, 6.3-liter F140 FC V12.

Apparently, the owner liked the F12 TRS so much that he commissioned another one. Built a year later, the liquid silver-painted car received a new front end, several rear-end modifications, and a different set of side mirrors.

Despite that, the original F12 TRS is considered a one-off, whereas the second is an unofficially designated Mk II version.

2018 Ferrari SP38 Deborah

2018 Ferrari SP38 Deborah
Photo: Ferrari S.p.A.
The next entry on our list is, at least in my opinion, the most beautiful street-legal Ferrari of the modern era.

It was commissioned by Ronnie Kessel, a Swiss entrepreneur who inherited a Ferrari dealership and a Ferrari racing team from his father, former Formula 1 driver Loris Kessel.

Ronnie wanted his one-off to be a daily driver-type car that paid homage to the 308 and F40 - two of his favorite Ferraris.

Flavio Manzoni and the Centro Stile team decided to use the 488 as the base for this project but to satisfy the client's desire, they built a completely bespoke body from scratch.

Apart from the redesigned body, the SP38 received a unique interior, a set of custom wheels, and a unique metallic paint christened Deborah Red.

Though the custom bodywork doesn't exactly scream 308 or F40, it's unquestionably a piece of automotive art we'll never tire of admiring.

2019 Ferrari P80/C

2019 Ferrari P80/C
Photo: Ferrari S.p.A.
If calling the SP38 Deborah the most beautiful street-legal Ferrari of the modern era is debatable, I'm sure nearly everyone will agree that the P80/C is the most stunning modern Prancing Horse created for the track.

For this special project, the Centro Stile team was tasked with creating a modern endurance prototype-inspired track car by a wealthy, speed-addicted collector.

Based on the 488 GT3 race car, the P80/C received a completely new body with an integrated roll cage that looked like the SP38 Deborah's evil cousin.

A carbon-fiber work of art equipped with front and rear diffusers, an ample rear spoiler, and two deep hood vents, the P80/C laked headlights or taillights, hinting to the fact that it was developed as an all-business track weapon.

It also received the 488 GT3 race-ready interior, and its powertrain comprised of a 592-hp twin-turbo V8 linked to a seven-speed dual-clutch transmission.
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About the author: Vlad Radu
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Vlad's first car was custom coach built: an exotic he made out of wood, cardboard and a borrowed steering wheel at the age of five. Combining his previous experience in writing and car dealership years, his articles focus in depth on special cars of past and present times.
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