Downforce without compromise.
The HDF package
The 21st-century hypercar
The 21C HDF is the most extreme variant in the lineup. Showcasing dominating performance in a road car that looks and drives like nothing else. The 21C HDF produces 3,307 lbs (1,500 kg) of downforce at 150 mph — reaching a staggering peak of 5,445 lbs (2,470 kg) at 200 mph — while remaining fully homologated and compliant on real-world roads.
Downforce at 150 mph
3.0:1
Lift-to-drag
1:22.30
Laguna Seca
Production car lap record
Combined output
The configurator
Design themes
Gold Rush theme
California Gold Rush
A new benchmark for the hypercar
Built to be the ultimate road and track hypercar, the 21C HDF has set a lap record at every track it has attempted. In October 2025, a single production-spec HDF ran the Gold Rush tour: 1,000 miles across California roads, five tracks in five consecutive days, and a record set at every stop.
1:48.30
Thunderhill Raceway Park
1:35.05
Sonoma Raceway
1:24.39
Laguna Seca
1:19.73
Willow Springs
2:03.17
The Thermal Club
Unmatched performance
History of records
Laguna Seca Raceway
1:
August 5, 2021
Driven by Joel Miller, a pre-production 21C prototype, VP1.2, set a 1:25.44 lap, shattering the previous record by over two seconds.
Circuit of the Americas
2:
October 19, 2021
On its first visit to COTA, the 21C took more than 6 seconds off the previous production car lap record.
Goodwood Hillclimb
July 15, 2024
The 21C became the fastest road-legal production car on the legendary Goodwood Hillclimb, with a blistering 48.82 second run.
Circuit of the Americas
2:
August 16, 2024
Cementing its status as America's hypercar, the 21C reclaims the COTA record with a time of 2:10.70, more than half a second quicker than its previous record.
Laguna Seca Raceway
1:
July 16, 2025
As part of the California Gold Rush initiative, the 21C broke its own record at Laguna Seca with a 1:24.39 lap — despite an on-the-spot repair after striking a tire wall during a push lap.
Laguna Seca Raceway
1:
December 9, 2025
Czinger returned to Laguna Seca for the fourth time, ready to defend its title against Koenigsegg and keep California’s most iconic track record. That goal was achieved in full force: the 21C reclaimed the record by nearly 2 seconds with a time of 1:22.30, establishing the record that still stands today.
Unmatched Downforce
Aerodynamics
The 21C HDF features an aggressive aerodynamic package designed to maximize grip at speed. Substantial ground effect aerodynamics work in conjunction with a 76-inch dual-element rear wing, extended front splitter, full-length diffuser, and channeled side splitters to generate a staggering 3,307 lbs (1,500 kg) of downforce at 150 mph. Aerodynamics are further enhanced by the 21C’s narrow inline cockpit, which minimizes frontal area to enable the car’s 3.0:1 lift-to-drag ratio.
The Foundation
The world’s first BioLogic™ chassis
21% of 21C HDF is topology-optimized and additively manufactured using processes developed by Czinger’s vertically integrated sister company, Divergent Technologies. Joined to the carbon fiber monocoque, the metal printed parts — steering rack, motor housings, suspension components, crash structures — comprise the world’s first Pareto optimal chassis.
Additively manufactured
Monocoque
Tooling
The Power Unit
Czinger-designed powertrain
The most power-dense homologated V8 in the world, Czinger’s in-house 2.88L twin-turbo V8 produces 750 hp and revs to 11,000 rpm. With its compact size and extensive use of additively manufactured components, the engine weighs just 231 lbs (105 kg). Two electric motors on the front axle and a crankshaft-mounted Motor Generator Unit combine to make an additional 500 hp, bringing total system output to 1,250 hp on 91 octane, pump fuel.
Technical specifications
Combined output
Top speed
0–60 mph
Dry weight
Powertrain
Engine
750-hp 2.88L twin-turbo V8
V8 power density
260 hp/l (245 kW/l)
Hybrid System
Strong Hybrid, 800-V electric drive
Combined output
1,250 hp
Redline
11,000 rpm
Performance
0–62 mph
1.9 sec
Top speed
205 mph
Quarter mile
8.7 seconds
Chassis & weight
Chassis
Additively manufactured structures with carbon fiber monocoque
Dry weight
3,549 lb (1,610 kg)
Bodywork
Carbon fiber
Aerodynamics
Lift-to-drag
3.0:1
Downforce @ 150 mph
3,307 lbs (1,500 kg)
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