The 2023 Jeep Wrangler Rubicon 392 20th Anniversary Edition combines the Wrangler’s traditional off-road hardware with a naturally aspirated 6.4-liter Hemi V8. This particular example, listed for sale on Bring a Trailer, takes that formula considerably further, featuring an extensive engine build centered on a Whipple supercharger, forged internal components, and a comprehensive exhaust and fuel-system upgrade.
Anniversary Styling Meets Serious Hardware
Finished in Sting-Gray, the four-door Wrangler wears the Rubicon 20th Anniversary grille, hood decals, and tailgate plaque. Steel front and rear bumpers, rock sliders, LED headlights, body-color fender flares, and a three-piece Freedom Top hardtop preserve its unmistakable Rubicon appearance while reinforcing its trail-ready configuration.
The Xtreme 35-inch tire package includes beadlock-capable 17-inch alloy wheels wrapped in 315/70 BFGoodrich All-Terrain T/A KO2 tires, with a matching spare mounted at the rear. The anniversary suspension provides an additional half-inch of lift over the standard Rubicon, while disc brakes at all four corners handle stopping duties.
Inside, black and red Nappa leather upholstery covers the heated front bucket seats and folding rear bench. Matching accents extend across the dashboard, complemented by red seat belts. Equipment includes air conditioning, cruise control, a ParkView backup camera, and UConnect 4C infotainment with an 8.4-inch touchscreen, Apple CarPlay, and Android Auto integration.
Whipple-Supercharged 6.4-Liter Hemi V8
The centerpiece is the 6.4-liter Hemi V8, which originally produced 470 horsepower and 470 lb-ft of torque in factory specification. National Speed transformed the engine with a Whipple Gen-VI 3.0-liter supercharger and intercooler kit, a 112 mm throttle body, and an ATI harmonic balancer with a 7.28-inch lower pulley.
The supporting modifications extend well beyond forced induction. An MMX drop-in piston and connecting-rod set strengthens the engine’s rotating assembly, while a custom-grind Cam Motion camshaft, Brian Tooley Racing valve springs, and chromoly pushrods address valvetrain requirements. American Racing two-inch long-tube headers, high-flow catalytic converters, a Stainless Works X-pipe, and an AWE SwitchPath cat-back exhaust complete the revised exhaust system.
Fuel delivery has also been upgraded with an IMS Fuel Max voltage booster and Injector Dynamics ID1050x injectors. Custom engine calibrations accommodate both 93-octane gasoline and E85 fuel. The listing does not specify a verified output figure for the completed supercharged engine, so its final horsepower should not be assumed from the modifications alone.
Eight-Speed Automatic and Four-Wheel-Drive Capability
Power reaches the wheels through an eight-speed automatic transmission equipped with a Circle D Specialties 8HP70 3,200-rpm stall torque converter and a custom transmission calibration. A dual-range transfer case, Select-Trac full-time four-wheel-drive system, and Tru-Lok front and rear locking differentials retain the Wrangler’s ability to tackle challenging terrain.
The combination of forced induction and upgraded drivetrain calibration makes this example distinct from a standard Rubicon 392. However, buyers should consider the additional maintenance and inspection requirements associated with a heavily modified powertrain, particularly when assessing a low-mileage vehicle.
Auction Details and Documentation
Invoices from National Speed document more than $48,000 in modifications completed in 2025. The Wrangler was acquired by the selling dealer, Competitioncars, in 2026 and has accumulated just 723 miles, approximately six of which were added under current ownership.
The Carfax report lists no accident or damage entries, although it identifies an open recall. The South Carolina title carries an “Actual Mileage” vehicle brand, a detail prospective buyers should review alongside the vehicle’s documentation and title history.
2023 Jeep Wrangler Rubicon 392 20th Anniversary Edition For Sale – Image Gallery
Source: Bring a Trailer