By Seth Fargher
Justin Lambert and Cognito Motorsports built the Hellraiser XP1K to survive—and win—some of the toughest UTV desert races in North America. Based on a 2015 Polaris RZR XP 4 1000, the purpose-built race car combines a Cognito desert chassis and long-travel suspension with FOX internal-bypass shocks, Sparks engine upgrades, 30-inch ITP tires and the equipment required for long-distance desert racing.
In some forms of racing, a driver can buy a new machine, make a few basic modifications and head to the track with a reasonably competitive vehicle. Desert racing is different. Simply finishing requires a meticulously prepared UTV capable of enduring hundreds of miles of rocks, whoops, silt, heat and repeated high-speed impacts.
Justin Lambert understands those demands. As the founder of Cognito Motorsports and an experienced desert racer, Lambert built his business around suspension and chassis components for trucks and UTVs. Not surprisingly, suspension became one of the defining elements of his Hellraiser XP1K.
A Purpose-Built Polaris RZR Desert Racer
The Hellraiser XP1K was Lambert’s signature race car for Best in the Desert and SCORE competition, including races in Baja. This particular car was originally constructed for an episode of Destination Polaris before making its public debut at the Sand Sports Super Show in September 2015.
Although it began with a stock 2015 Polaris RZR XP 4 1000, very little about the finished machine remained stock. Cognito dismantled the RZR and used its basic frame structure as the foundation for a custom desert-racing chassis.
The Cognito crew then fabricated an extensive network of DOM steel tubing around that foundation. The structure was designed to provide the strength, occupant protection and suspension geometry required for sustained high-speed desert racing.
Cognito Long-Travel Suspension
Cognito equipped the Hellraiser with its own plus-four-inch long-travel suspension system. The package provides 19.5 inches of wheel travel and includes front control arms, heavy-duty tie rods, trailing arms, radius rods, a radius-rod cage, sway-bar links and upgraded axles.
FOX internal-bypass shocks control the suspension, with 2.5-inch shocks in front and larger 3.0-inch shocks at the rear. Cognito calibrated the shocks specifically for the vehicle and the demands of desert racing.
A properly developed suspension system does more than make a race car comfortable. The shocks and suspension components absorb and dissipate energy that would otherwise be transferred into the chassis and its occupants. Over hundreds of miles, that control can help protect the car, reduce driver fatigue and allow the team to maintain a faster pace through rough terrain.
“We pride ourselves on showing that weekend warriors and retail customers can purchase the same suspension we win in the desert on,” Lambert said. “When you buy a Cognito product, you’re getting the same exact components that we use on our own personal cars for both work and play.”
30-Inch ITP UltraCross Tires and Method Beadlocks
The Hellraiser XP1K rides on 30×10R-14 ITP UltraCross R-Spec tires mounted on 14×7 Method Race Wheels 401 beadlocks. The eight-ply-rated UltraCross was designed to handle the sharp rocks, hardpack and high-speed impacts commonly encountered in desert racing.
The combination helped Lambert win the Walker Evans Racing Desert Championship race at the 2016 UTV World Championship. As a Method-supported driver, he also earned a $1,000 contingency bonus for the victory. Lambert finished more than 11 minutes ahead of the runner-up while winning the UTV overall and UTV Pro class.
Read more about Justin Lambert’s 2016 UTV World Championship victory.
Sparks Racing Engine and Clutch Upgrades
Desert-racing power is only valuable when it can remain dependable through an entire race. Sparks Performance Products prepared the Hellraiser’s naturally aspirated ProStar engine to deliver additional performance without sacrificing the durability needed for events such as the Baja 1000.
The Sparks Stage 2 package included an X-6 stainless-steel exhaust system, Dynatek fuel and ignition controller with Sparks-specific mapping, a performance clutch kit and a heavy-duty clutch dampener.
Internal engine upgrades included high-compression standard-bore pistons, heavy-duty connecting rods and Stage 2 cylinder-head work. Together, these modifications gave Lambert additional power while retaining the original engine displacement.
Lighting, Navigation and Communications
Desert races frequently begin before sunrise or continue well into the night. The Hellraiser uses a 40-inch Rigid Industries E2 LED light bar and Rigid Q2 driving light to illuminate the course during low-light conditions.
A Lowrance GPS provides navigation inside the cockpit. Lambert and his co-driver communicate through a Rugged Radios RRP 6100 intercom and radio system, while a Rugged MAC 4.2 air-pumper system delivers filtered air to their helmets.
These systems are essential in a long-distance race car. The GPS helps the team follow the course, the radio maintains contact with chase crews and race officials, and the intercom allows the driver and co-driver to communicate over the engine, wind and suspension noise.
From Television Build to Race Winner
When Cognito initially completed the Hellraiser XP1K, the team had not decided whether to sell it or race it.
“Originally, we weren’t sure if we would sell it or race it,” Lambert said. “Obviously, we decided to race it.”
That decision quickly paid off. After winning the opening two rounds of the 2016 Best in the Desert season, Lambert entered the rest of the year with a perfect record and an opportunity to pursue the overall championship that had previously eluded him.
“We’ve won the Blue Water Desert Challenge twice and taken first at the Silver State 300, Parker 250, Vegas to Reno and now the UTV World Championship, but an overall series championship has eluded us,” Lambert said. “We have had a third-place finish at the Baja 500 and the Baja 1000, but we’re still hunting for a win south of the border.”
Lambert’s earlier results included another victory documented in our 2015 BITD Blue Water Desert Challenge race report.
Approximately 40 Hours of Preparation Between Races
Winning a desert race is only part of the job. Following the UTV World Championship, Lambert and the Cognito crew immediately began preparing the Hellraiser for the Mint 400.
The team spent approximately 40 hours between races stripping the car, inspecting its components, replacing common wear items and reassembling it. That workload demonstrates why desert racing requires far more preparation than simply repairing whatever visibly broke during the previous event.
Bearings, suspension joints, steering components, driveline parts and other wear points must be inspected before every race. Missing a developing problem can end the next event hundreds of miles before the finish line.
A New RZR XP Turbo for the Next Project
Lambert’s overall victory at the UTV World Championship also earned him a new Polaris RZR XP Turbo. At the time, Cognito was already constructing a separate XP Turbo race car, leaving the future of the prize vehicle undecided.
“We are already working on a new XP Turbo race car, so this car that we just won might end up being another pre-runner or dual-sport build,” Lambert said.
Whether intended for racing, pre-running or recreational use, Cognito’s projects share the same purpose-built approach. The Hellraiser XP1K remains a strong example of how thoroughly a production UTV must be transformed to compete—and win—at the highest levels of desert racing.
Cognito Motorsports Hellraiser XP1K Build Specs
- Vehicle: 2015 Polaris RZR XP 4 1000
- Chassis and cage: Custom desert chassis built by Cognito Motorsports
- Suspension: Cognito Motorsports plus-four-inch long-travel suspension with 19.5 inches of wheel travel
- Front suspension components: Cognito control arms and heavy-duty tie rods
- Rear suspension components: Cognito trailing arms, radius rods and radius-rod cage
- Additional suspension components: Cognito sway-bar links and axles
- Front shocks: 2.5-inch FOX internal-bypass shocks calibrated by Cognito Motorsports
- Rear shocks: 3.0-inch FOX internal-bypass shocks calibrated by Cognito Motorsports
- Engine: Sparks high-compression standard-bore pistons, heavy-duty connecting rods and Stage 2 cylinder-head work
- Fuel and ignition: Dynatek controller with Sparks Performance Products fuel mapping
- Clutch: Sparks performance clutch kit and heavy-duty dampener
- Exhaust: Sparks Performance Products X-6 stainless-steel exhaust
- Tires: 30×10R-14 ITP UltraCross R-Spec
- Wheels: 14×7 Method Race Wheels 401 beadlocks in matte black
- Engine oil: Mystik Full Synthetic 10W-40 ATV/UTV motor oil
- Grease: Mystik JT-6 Synthetic Hi-Temp 220
- Lighting: Rigid Industries 40-inch E2 LED light bar and Q2 driving light
- Navigation: Lowrance GPS
- Communication: Rugged Radios RRP 6100 intercom and radio system
- Helmet air: Rugged Radios MAC 4.2 air-pumper system
More Cognito Motorsports Racing
- Justin Lambert Wins the 2016 UTV World Championship
- Cognito Motorsports at the 2015 BITD Blue Water Desert Challenge
- Cognito Motorsports Wins the BITD BlueWater Desert Challenge
- History of the Polaris RZR
Photos by Kopesh Media and Seth Fargher.
