Ford Performance Bronco 4600 ULTRA4 - front hood / capot avant

Ford Performance Bronco 4600 ULTRA4 : Sasquatch off-road racing by design [V6 2.7L EcoBoost twin-turbo] #KoH2021

04/02/2021 - Ewen LJ Team Principal DESIGNMOTEUR - Offroad -

Aujourd’hui, lors de la célèbre course off-road 2021 ‘King of the Hammers’, Ford Performance expose le tout nouveau véhicule de course dénommé Bronco 4600 ULTRA4 préparé par Ford Performance. 2quipé du V6 2.7L EcoBoost twin-turbo, et muni de préparation châssis adapté off-road paré pour les courses catégorie ULTRA4. Présentation.

Design Ford Performance Bronco 4600 ULTRA4

Ford Performance Bronco 4600 ULTRA4 - front-face / face avant
Ford Performance Bronco 4600 ULTRA4 – front-face / face avant

ULTRA4 Racing ?

ULTRA4 Racing is one of the fastest growing motorsports in the United States. It is unlimited 4 Wheel Drive Racing.

These cars are capable of speeds of 120+ miles per hour but can also navigate the most technical rock trails in 4 wheel drive low range. ULTRA4 Cars race in the annual Griffin King of The Hammers Presented by Nitto Tire in Johnson Vally, CA every February, as well as in the ULTRA4 Nitto Tire National Championship Series.


Races are held in California, Pennsylvania, Utah, Texas, Indiana and Arkansas as well as Internationally in the UK and Portugal.

2021 King of the Hammers KoH2021

King of the Hammers? It’s one of the meanest, ugliest, gnarliest races on the planet. What started as a group of friends racing through the car-size boulders of Johnson Valley, California, has evolved into a weeklong event complete with a pop-up city called Hammertown and no fewer than six individual races, all organized by the Ultra4 Racing.

Ford Performance Bronco 4600 ULTRA4 - front side-face / profil avant
Ford Performance Bronco 4600 ULTRA4 – front side-face / profil avant

“Innovating the off-road landscape and competing with Bronco’s higher-speed off-road abilities have always been at the core of Bronco brand’s heritage.”

“Our new Bronco 4600 racers underscore our motorsports heritage and how the all-new 2021 Bronco can be tuned from the showroom floor to compete in the grueling ULTRA4 stock class series.”

Dave Rivers, Ford SUV (Sport Utility Vehicle) marketing manager
Ford Performance Bronco 4600 ULTRA4 - side-face / profil
Ford Performance Bronco 4600 ULTRA4 – side-face / profil

Bronco heritage

Like the first-generation Bronco that took the 1969 Baja 1000 outright, new Bronco 4600 builds on this winning tradition starting with a 2021 Bronco two-door SUV with stock powertrain running on a competition-tuned High-Performance Off-Road Stability Suspension (HOSS) System.

Ford Performance Bronco 4600 ULTRA4 - rear side-face / profil arrière
Ford Performance Bronco 4600 ULTRA4 – rear side-face / profil arrière

Ford Performance supplies modified front and rear modular steel bumpers and a Warn ZEON winch, while RIGID LED off-road lights improve night vision.

A custom roll cage by Geiser Brothers and first-ever FIA off-road-certified race shells from Recaro are added inside.

Teintes : Race Red, Oxford White, Velocity Blue

Bronco 4600 race vehicles feature a new livery leveraging factory 2021 Bronco colors – Race Red, Oxford White and Velocity Blue. The front design takes inspiration from the 1969 Baja 1000-winning Bronco, with matte black hood, plus white upper and red lower body lines that transitions into a more modern Bronco design scheme extending rearward.

“Our new ‘war paint’ scheme tells the Bronco race story – up front is chapter one that traces back to the victorious 1969 Bronco,

then, as you travel along the side, the lines get more diagonal, more futuristic, signaling the future of the brand.”

Scott Guan, Bronco designer

“Bronco 4600 underscores how ready the all-new Bronco is for competition and how Ford Performance is committed to driving the brand’s success across multiple off-road series.”

“We look forward to off-road racing teams coming to this platform and to Ford Performance stepping up to continuously enhance the state of the art in off-road racing for them.”

Mark Rushbrook, global director, Ford Performance Motorsports

Moteur Ford Performance Bronco 4600 ULTRA4

Ford Performance Bronco 4600 ULTRA4 - front hood / capot avant
Ford Performance Bronco 4600 ULTRA4 – front hood / capot avant

Testing of Bronco 4600 begins later this month, with the race vehicles going on to run this year in ULTRA4 alongside factory-backed Bronco 4400 series race vehicles also revealed this week at King of the Hammers in Johnson Valley, California.

under the hood V6 Ford Performance Bronco 4600 ULTRA4

2021 Bronco chassis powertrain - engine / moteur - V6 2.7L EcoBoost - 10-speed automatic transmission - Sasquatch Package suspension - tyres
2021 Bronco chassis powertrain – engine / moteur – V6 2.7L EcoBoost – 10-speed automatic transmission – Sasquatch Package suspension – tyres

Ford Bronco two-door 2.7-liter twin-turbo V6 pushing out 310 horsepower and 400 pound-feet of torque.

Built on a 2021 Bronco two-door with Sasquatch Package, Bronco 4600 utilizes race-tested production 2.7-liter EcoBoost twin-turbo V6, SelectShift 10-speed automatic and second-generation T-6 chassis.

It serves as a test bed for a growing list of Ford Licensed Accessories and Ford Performance parts alongside the independent performance aftermarket.

Châssis Ford Performance Bronco 4600 ULTRA4

Ford Performance Bronco 4600 ULTRA4 - chassis / châssis - under view
Ford Performance Bronco 4600 ULTRA4 – chassis / châssis – under view

Taking learnings from the Bronco R Race Prototype that ran the 2019 and 2020 Baja 1000, the Bronco 4600’s competition-tuned high-performance off-road stability suspension features Fox coilover shocks with remote reservoirs and Fox pneumatic bump stops at all four corners.

It also features Wilwood Engineering brakes and 35-inch BFGoodrich mud-terrain T/A KM3 tires mounted to Method Race Wheels 202 Forged Beadlock wheels.

Ford Performance Bronco 4600 ULTRA4 - wheel / jante - tyres / pneus - BFGoodrich
Ford Performance Bronco 4600 ULTRA4 – chassis / châssis –

Heavy-duty front portal hubs from 74 Weld are mounted to Triton Engineering control arms with heavy-duty Howe hydraulic steering rack with cooler. A factory Dana AdvanTEK e-locking differential with RCV custom halfshafts deliver front wheel torque.

In back, Triton Engineering rear links support a Dynatrac ProRock XD60 axle with an ARB 35-spline Air Locker and Spidertrax Spider 9 axle shafts and hubs.

Ford Performance Bronco 4600 ULTRA4 - chassis / châssis - behind the wheel - suspension
Ford Performance Bronco 4600 ULTRA4 – chassis / châssis – behind the wheel – suspension

The rules by ULTRA4 state that while the stock frame, body, engine and transmission must be used, teams can install upgraded tires, transfer cases, axles and the like. Even upgrades to suspension components are allowed, provided they remain the same type.

Source et images :
Ford Performance
ULTRA4 racing