2025 US INDOOR CHAMPS CLASSES AND RULES
| Entry Fee | 1st Class | Additional Class | Motor Price |
| Mod Sedan, Handout Tire | $100.00 | $90.00 | N/A |
| Super Stock Sedan, Handout Tire | $100.00 | $90.00 | N/A |
| 21.5 Stock Sedan, Handout Tire | $100.00 | $90.00 | N/A |
| 25.5 Sedan, Handout Tire | $100.00 | $90.00 | N/A |
| VTA Vintage Trans AM | $100.00 | $90.00 | N/A |
| USGT, Spec Gravity RC USGT Motor, Spec Tire | $100.00 | $90.00 | $80.00 |
| 1/12th Modified | $100.00 | $90.00 | N/A |
| 1/12th Super Stock | $100.00 | $90.00 | N/A |
| 1/12th Stock, Handout Tire, Open Gearing | $100.00 | $90.00 | N/A |
| F1 Spec Tire | $100.00 | $90.00 | N/A |
| FWD Front Wheel Drive, Handout Tire | $100.00 | $90.00 | N/A |
| WORLD GT-R, Spec Tire | $100.00 | $90.00 | N/A |
| GT 1/12 Rubber Tire | $100.00 | $90.00 | N/A |
| 1/12th Master 50+ | $100.00 | $90.00 | N/A |
| 1/12th Rubber Tire "EXHIBITION CLASS" | $100.00 | $90.00 | N/A |
| Class | Motor | Speed Control Mode | Handout Tires | Weight | Battery Size | Ride Height |
| Mod Sedan | Open | Open | Yes | 1320 | 2S | 5mm |
| Super Stock Sedan | 17.5 Roar Approved | Blinky | Yes | 1320 | 2S | 5mm |
| 21.5 Stock Sedan | 21.5 Roar Approved | Blinky | Yes | 1320 | 2S | 5mm |
| 25.5 Sedan | 25.5 Roar Approved | Blinky | Yes | 1320 | 2S | 5mm |
| VTA | GRC #2025 Scale Spec 25.5 for VTA | Blinky | No | 1400 | 2S | 5mm |
| USGT | Gravity RC USGT Spec Motor 21.5 | Blinky | Yes | 1350 | 2S | 5mm |
| 1/12th Modified | Open | Open | No | 730 | 1S | 3mm |
| 1/12th Super Stock | 13.5 Roar Approved | Blinky | No | 730 | 1S | 3mm |
| 1/12th Stock | 17.5 Roar Approved | Blinky | Yes | 730 | 1S | 3mm |
| F1 | 25.5 Roar Approved | Blinky | No | 1050 | 2S | 4mm |
| FWD | Gravity RC USGT 21.5 Spec Motor | Blinky | Yes | 1250 | 2S | 5mm |
| World GT-R | 17.5 Roar Approved | Blinky | No | 1025 | 1S | 5mm |
| GT 1/12 Rubber | Gravity RC USGT Spec Motor 21.5 | Blinky | No | 750 | 1S | 3mm |
| 1/12th Masters 50+ | 17.5 Roar Approved | Blinky | No | 730 | 1S | 3mm |
| 1/12th Rubber tire "EXHIBITION CLASS | 17.5 Roar Approved | Blinky | No | 730 | 1S | 3mm |
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MOTOR RULES FOR 2025:
WITH THE ROAR MOTOR RULE CHANGES GOING INTO AFFECT ON SEPT 1. FOR THIS YEARS CHAMPS WE WILL ALLOW BOTH THE NEW MOTORS AND OLD MOTORS.
WITH THE EXCEPTION OF THE 25.5 CLASS. NEW ROAR APPROVED MOTORS FOR THE SEPTEMBER 1ST 2025 RULE CHANGE WILL NOT BE ALLOWED. 25.5 MOTORS MUST BE FROM THE PREVIOUS APPROVED LIST.
********* 1/12th SCALE BODY INFO *********
BODIES MUST BE CUT OUT AND RUN AS DESIGNED. IT IS NOT ALLOWED TO REMOVE ANY OF THE REAR WING AREA OR REAR KICK UP OF THE BODY. Wing must have the stock molded “peak” intact. This area where the peak of the wing “rounds over” and the body mold begins to descend vertically downward toward the base.”
1/12TH Modified will be Triple A Mains and the 2 largest classes will also be Triple A Mains.
SEDAN TIRES: SANDING, CUTTING OR GRINDING OF THE TIRES IS NOT ALLOW.. NO SANDING THE SIDE WALLS. GLUING OF THE SIDEWALL IS ALLOWED.
BATTERY VOLTAGE: 2S= 8.40. 1S= 4.20 All batteries must be charged in a lipo bag. 90 degrees max temp at tech.
SPEED CONTROLS: Only ROAR approved Speed Controls and ROAR approved Speed Controler software is allowed in all Stock and Spec Classes.
BODIES: Only approved touring car bodies by ROAR, EFRA or IFMAR are allowed.
Bodies must be on the market and readily available 30 days before the event.
WGT-R MOTOR: Roar Approved 17.5.
WORLD GT-R COMPLETE RULES CLICK HERE
WGT-R TIRE RULES: INFO COMING SOON
VINTAGE TRANS AM COMPLETE RULES CLICK HERE
VTA TIRES ARE OPEN TO EITHER:
PROTOFORM FRONT-#10140-00 / REAR #10139-00
OR GRAVITY RC GRC145W OR GRC145B
MOTOR: GRAVITY RC GRC #2025 Scale Spec 25.5 for VTA
USGT COMPLETE RULES CLICK HERE
USGT MOTOR INFO: USGT BRANDED 21.5 MOTOR BY GRAVITY RC #GRC 2000. Available for purchase at event for $80 or online at www.teamgravityrc.com Or bring your own and have it teched at the event.
FORMULA 1 TIRES:
Motors: Bring your own 25.5 Roar Approved Motor- NOT THE NEW 2025 SEPT 1 APPROVED MOTORS.
ONLY PREVIOUS 25.5 ROAR APPROVED MOTORS BEFORE SEPT 1 2025 WILL BE ALLOWED. Motors will need to be submitted before qualifying to ensure they meet all Roar Specifications.
TIRE INFO COMING SOON
1/12TH MASTERS 50+
Class is open to any racer over 50 years of age as of Nov 28 2024.
TIRES: Only CRC or BSR Blue Stripe or Purple Stripe tires are allowed. Racers can bring their own tires and do not need to be new.
Racers cannot compete in both 1/12th Stock and Masters
ESC: Blinky
MOTOR: Roar Approved 17.5
- Open gearing.
GT12 RUBBER TIRE:
Bodies: 1/12th GT Style bodies, no LMP style bodies Minimum body weight is 50G. if underweigth,extra weight must be added to the roof. body must be cut on cut lines, no slamming of the bodies.
Gearing: Open.
Tires: Open- Any rubber tire that meets dimensional specs, and is commercially available on the market are legal for GT12. Current tires available to use are SJT, Gravity RC, CRC, eXcelerate, Rush.
MOTOR: Gravity RC USGT Spec Motor. You can bring your own to the event to get teched or you can pre purchase one for $80.
1/12TH STOCK:
Roar legal 17.5 Motor.
TIRES: BSR Blue line Spec. Click here for image
Front #F1233-S
Rear #F1234-S
Racers can get 4 sets maximum for qualifying and finals.
If 1/12th Stock is a Triple A Main class then A Main racers can get 2 more sets after qualifying for the finals.
1/12TH Rubber Tire" EXHIBITION CLASS"
Body: Normall LMP style 1/12th bodies.
MOTOR: Roar approved 17.5 Motor
TIRES: Gravity RC #GRC142B OR #GRC142W
STOCK SEDAN MOTOR:
Bring your own Roar Legal 21.5 Motor. Motors will need to be submitted before qualifying to ensure they meet all Roar Specifications.
TOURING TIRES: Gravity RC G Spec Type C #GRC-132 $30 A SET
25.5 Sedan:
Bring your own Roar Legal 25.5 Motor. NOT THE NEW 2025 SEPT 1 APPROVED MOTORS.
ONLY PREVIOUS ROAR APPROVED MOTORS BEFORE SEPT 1 2025 WILL BE ALLOWED. Motors will need to be submitted before qualifying to ensure they meet all Roar Specifications.
FRONT WHEEL DRIVE:
Vehicle must be a industry produced FWD Designed car. Industry produced FWD converion kits are allowed. No homemade chassis or 4wd Touring cars with rear drive eliminated allowed.
Approved body list: LIST IS SUBJECT TO ADDITIONS UP TO 30 DAYS BEFORE EVENT.
WINGS: MUST USE WINGS THAT ARE INCLUDED WITH BODY, NO AFTERMARKET OR OTHER WINGS ALLOWED
Front Wheel Drive Tour Car Rules.
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Chassis - only purposely original manufactured FWD chassis allowed.
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Body - 1:1 scale front wheel drive cars or race cars (ie. TCR series) that are replicas of production street cars.
a) No 4wd TC style race bodies allowed. (Ex Racer, DBX, Speed6, LTC-R, Mazda, etc)
b) Only bodies on approved list allowed.
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Battery - any ROAR approved 2S lipo, max charged voltage 8.4
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ESC - any ROAR approved ESC run in blinky mode
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Body weight minimum - 80g. If weight needs to be added it must be added to the underside of cab
roof and cannot extend down more than 5mm.
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Race ready trim minimum weight - 1250g
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Motor - GRAVITY RC USGT SPEC 21.5 MOTOR
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Ride height minimum - 5mm
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Car width maximum including body - 195mm
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Tires –Gravity treaded pre-mounted tire Model #s GRC123,
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Grinding of tire tread or sidewall to soften or reduce tire diameter is NOT permitted. Only sanding or clipping of mold seam is allowed.
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No overall body height from bottom of chassis to top of body. This allows you to mount the body as low as possible without it rubbing on the racing surface.
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No modifications can be made to body other than wheel cutouts and lower skirt of the body as to prevent rubbing on the race surface.
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Rear wing is optional. If run, only body supplied wing is allowed. If aftermarket wings are available only those on the approved list below are allowed.
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No front wings allowed.
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Vortex generators allowed. Can only be place above the rear window. Must be to scale. Final approval subject to event coordinator.
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Esthetic treatments are allowed as long as they do not modify the basic shape of the body or alter the aerodynamics other than those mentioned in rules # 1-16. Example of additions: tail or side pipes, hood scoop, mirrors, lighting, door handles, etc.
EK9 – 69225
MK9 - 60227
TAMIYA :
#51339 Volkswagen Golf GTI #51421 Castrol Honda Civic VTi #51431 Honda Civic-Type R# 51452 Honda CR-Z #51473 Volkswagen Scirocco GT24-CNG
#84137 Volvo 850
#84138 Honda Accord 1996
#84139 Peugeot 406 ST
#84140 Alfa Romeo 156
#84143 Tom's EXiV
#84144 Renault Clio
#84145 Tom's Levin #51401 Lancia Delta 190mm #93035 Hyundai Veloster #93043 Hyundai i20 WRC
BITTY DESIGN:
HC-F 1/10 FWD - BDFWD-190HCF
MON-TEC:
#019-007 MITO RX
#017-005 WR4
MYTH Track – 019-007
308 TCR 2.0 – 019-017.1
GTI Vision – 020-008
308 TCR - 019-017
MITO RX - 019-007
WR4 RALLY - ART.017-005
WR1 Rallye 190mm - ART.015-001
WR2 Rallye 190mm - ART.015-002
WR3 Rallye 190mm - ART.015-003
CIVIC #23001
TURBO MAXI Rallye 190mm - ART.013-013
ABC HOBBY :
#66086 CIVIC TYPE R(EK9)
#66021 ACCORD WAGON
#66072 ODYSSEY
#66083 ESTIMA
#66091 ODYSSEY(RB)
#66124INTEGRA TYPR-R 96Spec. #66086,66086-MC HONDA CIVIC EK9 TYPE-R #66091,66091-MC HONDA ODYSSET (RB)
KILLER BODY :
#48559 Alfa Rome Giulietta (2010)
#48481 Alfa Romeo 75 Turbo Evoluzione
#48472 Alfa Romeo 155 GTA
Alfa Romeo Giulietta 2010 – 48559, 48560, 48561, 48562 Lancia Delta HF – 48285 through 48290
Lancia Delta HF Integrale – 48488, 48384 through 48387
3Racing:
#LBD-CIVICMK9 CIVIC MK9
FK8 Body - BDY-FK8LB
XTREME AERODYNAMICS-
She-Rock – MTB0417
ZOO RACING:
#ZR-0008 Gorilla
#ZR-0017-07 Gorilla MAX