Being in essence a merger between Best In The Desert and Unlimited Off-Road Racing, the American Off-Road Racing Championship understandably created its rulebook by synthesizing the regs from the two series.

The moto and quad classes adopted the BITD rules, while most of the four-wheelers will use UNLTD’s. UTVs are a mix of both.

Car / Buggy

Although based on the UNLTD rulebook, most of the car and buggy categories maintain the same name as their BITD counterparts such as Class 1 and the new-for-2025 Super 10.

The AORRC’s Class 1, for example, is BITD’s Class 1500. Class 10 is Class 1000, while Class 5 Unlimited and Class 12 are respectively based on BITD Classes 5000 and 1100. Class 1/2-1600, a common face in many desert series, was what BITD called Class 2000.

The much beloved Class 11 will also be part of the AORRC program.

ClassNumber Assignment
Class 1/2-16001600–1699
Class 1100–199
Class 1 SPEC / Class 62006200–6299
Class 1 UnlimitedU100–U199
Class 5 Unlimited500–549
Class 5-1600550–599
Class 9 Challenger900–999
Class 101000–1099
Class 111100–1199
Class 121200–1299
Gambler 500 / Hooptie XG01–G99
Super 10S1000–S1099

Truck

Trucks are also based on UNLTD, meaning BITD drivers would have to account for some slight changes.

Following SCORE’s Trophy Truck model, BITD’s Trick Truck category has been divided into four-wheel- and two-wheel-drive Unlimited Trucks. Class 1300 has been converted into Unlimited Truck Legends, while Class 6100 is for Spec trucks.

Other class name changes for BITD racers to get used to include:

  • Class 1200 → Stock Production Truck Full
  • Class 1700 → Jeepspeed Challenge
  • Class 2700 → Jeepspeed Cup
  • Class 3700 → Jeepspeed Outlaws
  • Class 4700 → Jeepspeed Trophy
  • Class 6000 → TrophyLite
  • Class 7100 → Class 7S
  • Class 7200 → Class 7
  • Class 7300 → Stock Production Mini / Mid-Size
  • Class 8000 → Class 8
  • Class 8100 → Open Sportsman
ClassNumber Assignment
Class 7700–799
Class 7F700F–739F
Class 7S7100–7199
Class 8800–849
Class 14501400–1499
Class 20002000–2099
Class 30003000–3099
Jeepspeed Challenge1700–1799
Jeepspeed Cup2700–2799
Jeepspeed Outlaws3700–3799
Jeepspeed Trophy4700–4799
Open Sportsman8100–8199
Stock Production Truck Full-Size850–899
Stock Production Truck Mini / Mid-Size7300–7399
TrophyLite6000–6099
Unlimited Truck 2WD1–99
Unlimited Truck 4WD1–99
Unlimited Truck LegendsL1–L99
Unlimited Truck SPEC200–299

UTV

UTVs will use a combination of UNLTD and BITD rules. There will also be a category for electric and hybrid UTVs, which are still in their infancy but have seen increased relevance like the upcoming Segway Super Villain SX20T hybrid; a gas-based version raced BITD’s Silver State 300 in May.

The AORRC has also introduced a pipeline program for UTV drivers to move up from Sportsman to Pro classes with their existing cars. R/H2 drivers start in UTV Stock R/H2 before graduating to UTV Pro Stock R/H2 and ultimately reaching UTV Pro. Meanwhile, those not in R/H2 begin with UTV Stock, then head up UTV Pro Stock and either UTV Pro Turbo or UTV Pro.

ClassNumber Assignment
UTV EV / HybridE1–E999
UTV ProT1–T999
UTV Pro Naturally AspiratedR1–R999
UTV Pro StockS1–S999
UTV Pro Stock R/H2Z1–Z999
UTV Pro TurboB1–B999
UTV Sportsman StockU900–U999
UTV Sportsman Stock R/H2UR1–UR999

Other 4-Wheelers

All other four-wheel classes follow the UNLTD regulations.

EV / Hybrid

ClassNumber Assignment
EV Open ProductionEV200–EV299
EV ProductionEV100–EV199
EV UnlimitedEV300–EV399
Hybrid Open ProductionH200–H399
Hybrid ProductionH100–H199
Hybrid UnlimitedH300–HE99

Rock

ClassNumber Assignment
R400 Unlimited4400–499
R500 Modified4500–4599
R600 Stock Class4600–4699
R800 Legends4800–4899
R900 Pro Open UTVO4900–O4999
R900 Pro Modified UTVM4900–M4999
R900 UTV StockS4900–S4999

Military

ClassNumber Assignment
Modern MilitaryM1–M99
Vintage MilitaryV100–M199

Vintage

ClassNumber Assignment
Modern VintageV300–V399
VintageV100–V199
Vintage OpenV200–V299

Motorcycle/Quad

The three Quad classes are tentatively set to only appear at the Mint 400, Vegas to Reno, and Laughlin Desert Challenge.

ClassNumber Assignment
1974 and Down SportsmanV1–V99
1975–1982 SportsmanVM100–VM199
1983–1995 SportsmanVM200–VM299
399 AmateurO51–O99
399 ExpertX101–X199
399 ProX1–X99
Adventure Bike SportsmanAB1–AB99
EV ProEM1–EM99
Family ExpertF1–F99
Hooligan SportsmanH1–H99
Ironman AmateurX201–X299
Ironman ExpertO1–O50
Ironman ProJ1–J99
Lites ExpertK101–K150
Lites ProA1–A99
Open Amateur351–399
Open Expert301–350
Open ProN1–N99
Over 30 ExpertM501–M599
Over 30 ProK1–K99
Over 40 ExpertM701–M799
Over 40 ProC1–C99
Over 50 ExpertM801–M899
Over 60 ExpertM901–M999
Quad Expert401–450
Quad Ironman Expert601–699
Quad ProQ1–Q99
Scrambler SportsmanSC1–SC99
Women’s ExpertW1–W99

Featured image credit: Polaris

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