mtrc Race Classes

“CHICKEN LITTLE” AKA NOVICE

Skill Level (Beginner – Intermediate – Expert)

This class is strictly for individuals who are new to racing. If an Individual is deemed eligible by the Race Director has shown repeated success in this class, they will graduate out of Novice Class and no longer be allowed to race in this class.

Rules

Any Kyosho Mini-Z Readysets in Training Mode

All of our rentals are suitable to run in the Novice class. (See rentals)

MTRC CORE CLASSES

“GREMLINS” AKA KYOSHO BOX STOCK

Skill Level (Beginner – Intermediate – Expert)

This class is for ALL skill levels. This class is designed to close the gap between people’s budget and car performance. You don’t need to have all the expensive upgrades to be competitive, but you better bring your best driving skills as they will be put to the ultimate test.

Chassis (90mm – 102mm)

MR02/MR03/MR04 RWD ONLY

Motor/ESC

Stock Kyosho RTR brushed motor
No internal motor modifications are allowed, motor cannot be opened
Stock capacitors and thermal cutoff switch must remain untouched
Motor wires may be replaced, this is the only motor modification allowed
No upgraded or stacking fets, no modifications allowed to the board
Must use stock board KYOMZ414B , no EVO or programmable boards

Gearing

Stock pinion and differential gears
6T-9T pinion only

Wheels (width x diameter)

Kyosho or PN branded plastic or aluminum wheels (No 3D printed, prototype wheels)
Front wheels must be 8.5mm x 20mm ONLY (Larger 11mm or 14mm are not allowed)
Rear wheels must be 11mm x 20mm ONLY (Larger 14mm are not allowed)
Mounted tire and wheel diameter cannot exceed 25.5mm
Offset must fit properly inside the body

Tires

Any brand of Rubber Tires (must be a production tire and widely available)
No foam, silicone, Urethane, Ethyl Carbamate, prototype and/or homemade tires.
Traction compounds of any kind is NOT ALLOWED. Tire warmers are allowed.
Tire cleaning with 70% alcohol solution is allowed.

Transmitter

Stock Kyosho RTR Transmitter Only
Must be in stock configuration (No mods of any kind to steering wheel or throttle/brake trigger)

Batteries

KYO71998 - Kyosho Speedhouse AAA batteries ONLY!

Bodies

Stock Kyosho Autoscale and Hard plastic bodies
Bodies must remain in stock configuration.
- Entire windshield and windows must remain installed
- Trimming is allowed for clearance purposes only
- Front splitters may be rounded (No Performance modifications)
- Bodies must be painted in a visible color (No solid white and/or Black allowed)
Lexan bodies, windows and/or roofs are not allowed

Weight

Stock (Minimum ~ approximately 180g)

Modifications

King-pin Flip Mod
T-Plate can be upgraded (OEM only - Kyosho)
Front suspension springs (OEM only - Kyosho)
Aluminum wheel nuts (OEM only - Kyosho)
Any brand ball bearings
Lube/grease allowed for dampening, and differential

NO OTHER MODIFICATIONS OTHER THAN ONES LISTED ABOVE ARE ALLOWED

3D Print Transponder Holder, Body Side Clips, ESC Top Cover NOT allowed.
No other aluminum, 3D printed and/or prototype parts allowed
Titanium and/or Hex Screws are NOT allowed

“GOODFELLAS” AKA STOCK 2WD

Skill Level (Beginner – Intermediate – Expert)

This class has fewer restrictions than the Kyosho Box Stock class and allows many upgrades to increase performance and have a faster racing experience. The Stock 2WD class is very popular and is designed for the Intermediate & Expert level drivers.

Chassis (90mm - 102mm)

MR01 / MR02 / MR03 / MR04 / MRC / MR01 / PNR2.5W Chassis ONLY

Motor/ESC

Stock Kyosho white/black end ball brushed motors (MZ9, MZ9P, KYOMZ9E, MZW301, MZW301E), PN 70T, PN50T
Motors internals must remain unaltered with stock rotor, brushes, magnets, comms, etc.
Motor cannot be opened
Motor wires can be swapped
Capacitors and thermal cutoff can be removed
All Kyosho boards allowed
Replaced or stacked fets allowed

Gearing

Open

Wheels (width x diameter)

Any branded plastic or aluminum wheels (No 3D printed, prototype wheels)
Front wheels must be 8.5mm x 20mm ONLY (Larger 11mm or 14mm are not allowed)
Rear wheels must be 11mm x 20mm ONLY (Larger 14mm are not allowed)
Mounted tire and wheel diameter cannot exceed 25.5mm
Offset must fit properly inside the body

Tires

Any brand of Rubber Tires Only (must be a production tire and widely available)
No foam, silicone, Urethane, Ethyl Carbamate, prototype and/or homemade tires.
Traction compounds of any kind is NOT ALLOWED. Tire warmers are allowed.
Tire cleaning with 70% alcohol solution is allowed.

Transmitter

Open – All transmitters allowed (No receiver with built in Gyro and/or any Gyro)

Batteries

AAA NiMh Only
Speedhouse 800mah, PN 750mah, PN 900mah, Team Orion 900mah, Silver Horse 800mah
No Lithium chemistry-based batteries allowed / No NiZn or HV allowed

Bodies

Stock Kyosho Autoscale and Hard plastic bodies
Bodies must remain in stock configuration.
- Entire windshield and windows must remain installed
- Trimming is allowed for clearance purposes only
- Front splitters may be rounded (No Performance modifications)
- Bodies must be painted in a visible color (No solid white and/or Black allowed)
Lexan bodies, windows and/or roofs are not allowed

Weight

160 gram Ready to Race weight (With batteries, body, wheels, tire, etc)

Modifications

3D Print Transponder Holder, Body Side Clips, ESC Top Cover allowed.
No other 3D parts and/or prototype parts allowed
All aftermarket alloy upgrades allowed
Drilling Holes in chassis is allowed for cooling

“DIE HARD” AKA AAA 3500

Skill Level (Beginner – Intermediate – Expert)

This class offers unmatched flexibility for upgrading components and chassis tuning, allowing for faster lap times and superior handling. It's a favorite among racers for its competitive edge and performance potential. In the AAA 3500 Class, drivers put their skills and car setup knowledge to the ultimate test. Are you READY?

Chassis (90mm - 102mm)

MR01 / MR02 / MR03 / MR04 / MRC MR01 / PNR2.5W Chassis
Any AAA style chassis

Motor/ESC

Any brand 3500kv Brushless motor (Sensorless/Sensored)
X-Speed 4100kv allowed only installed in Kyosho RWD Chassis
Motors internals must remain unaltered with stock rotor, brushes, magnets, comms, etc.
Allow motor wires to be swapped
Capacitors and thermal cutoff can be removed
All Kyosho brushless esc boards allowed, EVO / PRO / ASF / VE
- Replaced or stacked fets allowed
PN 16 amp ESC allowed (PN500807 / PN500807A)
ESC must be in blinky mode if applicable

Gearing

Open

Wheels (width x diameter)

Any brand plastic or aluminum wheels (No 3D printed, prototype wheels)
Front wheels must be 8.5mm x 20mm ONLY (Larger 11mm or 14mm are not allowed)
Rear wheels must be 11mm x 20mm ONLY (Larger 14mm are not allowed)
Mounted tire and wheel diameter cannot exceed 25.5mm
Offset must fit properly inside the body

Tires

Any brand of Rubber Tires Only (must be a production tire and widely available)
No foam, silicone, Urethane, Ethyl Carbamate, prototype and/or homemade tires.
Traction compounds of any kind is NOT ALLOWED. Tire warmers are allowed.
Tire cleaning with 70% alcohol solution is allowed.

Transmitter

Open – All transmitters allowed (No receiver with built in Gyro and/or any Gyro)

Batteries

AAA NiMh Only
Speedhouse 800mah, PN 750mah, PN 900mah, Team Orion 900mah, Silver Horse 800mah
No Lithium chemistry-based batteries allowed / No NiZn or HV allowed

Bodies

Stock Kyosho Autoscale, white plastic bodies
Lexan windows and/or roofs are allowed
Entire windshield and windows must remain installed
Small body parts can be omitted
Bodies must be painted in a visible color (No solid white and/or Black allowed)
Lexan bodies are not allowed

Weight

160 gram Ready to Race weight (With batteries, body, wheels, tire, etc)

Modifications

3D Print Transponder Holder, Body Side Clips, ESC Top Cover allowed.
No 3D parts and/or prototype parts allowed
All aftermarket alloy upgrades allowed
Drilling Holes in chassis is allowed for cooling, must meet minimum weight.

“GRAN TURISMO” AKA EVO OPEN

Skill Level (Beginner – Intermediate – Expert)

Step up to the Evo Open Class, where the limits are pushed even further. This class is designed for the fastest AAA cars, offering minimal restrictions to unleash maximum speed and performance. With enhanced flexibility in upgrades and tuning, racers can achieve blistering lap times and unparalleled handling. The Evo Class is where elite drivers bring their A-game, fine-tuning their setups to perfection and showcasing their racing prowess.

Chassis (94mm – 98mm and 102mm)

Any 1/28 AAA (No NiZn or HV allowed)
- 2WD only

Motor/ESC

Any brushed 130 motor for Mini-Z
- PN 50T, PN 43T, PN 31T, etc
Open - 16** size brushless motor sensored / sensorless
Any esc sensored / sensorless

Gearing

Open

Wheels (width x diameter)

Any brand plastic or aluminum wheels (No 3D printed, prototype wheels)
Front wheels must be 8.5mm x 19mm or 8.5mm x 20mm or 11mm x 19mm or 11mm x 20mm ONLY (Larger 14mm are not allowed)
Rear wheels must be 11mm x 19mm or 11mm x 20mm or 14mm x 20mm ONLY
Mounted tire and wheel diameter cannot exceed 25.5mm
Offset must fit properly inside the body

Tires

Any brand of Rubber Tires Only (must be a production tire and widely available
No foam, silicone, Urethane, Ethyl Carbamate, prototype and/or homemade tires.
Traction compounds of any kind is NOT ALLOWED. Tire warmers are allowed.
Tire cleaning with 70% alcohol solution is allowed.

Transmitter

Open – All transmitters allowed (No receiver with built in Gyro and/or any Gyro)

Batteries

Any AAA NiMH Battery
No Lithium chemistry-based batteries allowed / No NiZn or HV allowed

Bodies

Any Body
Lexan Bodies
Pan Car/ LMP bodies allowed
Lexan windows and/or roofs are allowed
Entire windshield and windows must remain installed
Small body parts can be omitted
Bodies must be painted in a visible color (No solid white and/or Black allowed)

Weight

No minimum weight

Modifications

3D Print Transponder Holder, Body Side Clips, ESC Top Cover allowed.
All aftermarket alloy upgrades allowed

"THE AVENGERS" AKA 2500 LIPO STOCK 28SRA

Skill Level (Beginner – Intermediate – Expert)

Lipo ready chassis are growing rapidly in the 1/28th scale racing world. This class is a stock racing class designed to put the drivers to the test. The playing field is evened out as all motors are limited to 2500kv. Racers must have a proper setup and driving technique to come out ahead in this competitive class.

Chassis (98mm -102mm)

1/28 Scale Lipo or AAA style chassis
MR03/MR04 , MWX R.1, Jomerema, GL Racing GLR / GLR-GT / GL-GTR , PNR2.5W, PNR3.0, Atomic MRX/MRZ, Reflex RX28/RX28SE, NEXX Skyline / Specter
- For a full list please refer to 28SRA Rules

Motor/ESC

Any brand 2500kv Brushless motor (Sensorless or Sensored)
Motors internals must remain unaltered with stock rotor, brushes, magnets, comms, etc.
Any ESC Sensored or Sensorless
ESC must remain in blinky mode if applicable

Gearing

64 Pitch Only
12T Pinion (Must be the color coded green pinion)
53T Spur (must be the yellow color coded spur)

Wheels (width x diameter)

Front wheels must be 8.5mm x 20mm ONLY (Larger 11mm and 14mm are not allowed)
Rear wheels must be 11mm x 20mm ONLY (Larger 14mm are not allowed)
Mounted tire and wheel diameter cannot exceed 25.5mm
Offset must fit properly inside the body
Any brand, any material (No 3D printed wheels allowed)

Tires

Any brand of Rubber Tires Only (must be a production tire and widely available)
No foam, silicone, Urethane, Ethyl Carbamate, prototype and/or homemade tires.
Traction compounds of any kind is NOT ALLOWED. Tire warmers are allowed.
Tire cleaning with 70% alcohol solution is allowed.

Transmitter

Open

Batteries

2s Lipo 8.4v Max (No HV allowed)

Bodies

Stock Kyosho Autoscale, white plastic bodies
Lexan windows and/or roofs are allowed
Entire windshield and windows must remain installed
Small body parts can be omitted
Bodies must be painted in a visible color (No solid white and/or Black allowed)
Lexan bodies are not allowed
Must properly fit the chassis, trimming for fitment purposes only
GT Bodies for 98mm wheelbase chassis ONLY
LM bodies for 102mm wheelbase chassis ONLY
Body with side clips must weigh 26g minimum

Weight

160g

Modifications

3D Print Transponder Holder, Body Side Clips, ESC Top Cover allowed.
No other 3D parts and/or prototype parts allowed
All aftermarket alloy upgrades allowed

Other

This class is identical to 'Lipo Stock' found in official 28SRA race classes, above rules are general guidelines. For more detail please refer to 28SRA rules.

"RUSH" AKA FORMULA 1 28SRA

Skill Level (Beginner – Intermediate – Expert)

Welcome to the adrenaline-fueled world of Formula 1 racing! Formula 1 is the highest level of racing in all motorsports and now the cars have been shrunk down to Mini-Z size! Experience the thrill of high-speed action as these miniature open-wheel machines tear around the track with precision and agility. Designed for Intermediate to Expert drivers, these scaled-down marvels deliver a true-to-life racing experience, challenging your skills with every turn. Get ready to unleash your inner racing champion by battling it out with 1/28 open wheeled Formula-1 cars.

Chassis (112mm-116mm)

MWX R.1 F1
GLF-1 including MWX conversion parts
PNR F1
G-Force F1
Reflex F1
Kyosho F1
Nexx F1
Atomic F1 (MRZ/MRX Conversion allowed)

Motor/ESC

2500kv Sensored/Sensorless
No modifications allowed to the motor internals
Any esc sensored/sensorless
No option/aftermarket rotors,
ESC must be in Blinky Mode

Gearing

12T Pinion (Must be the color coded green pinion)
53T Spur (must be the yellow color coded spur)
64 Pitch Only

Wheels (width x diameter)

Any brand plastic or aluminum wheels (No 3D printed, prototype wheels)
Front wheels must be 11mm x (19mm-20mm) ONLY (Larger 14mm are not allowed)
Rear wheels must be 14mm x 20mm ONLY
Mounted tire and wheel diameter cannot exceed 25.5mm
Offset must fit properly inside the body

Tires

Any brand of Rubber Tires Only (must be a production tire and widely available)
No foam, silicone, Urethane, Ethyl Carbamate, prototype and/or homemade tires.
Traction compounds of any kind is NOT ALLOWED. Tire warmers are allowed.
Tire cleaning with 70% alcohol solution is allowed.

Transmitter

Open – All transmitters allowed (No receiver with built in Gyro and/or any Gyro)

Batteries

2s 8.4v Lipo max (HV not allowed)

Bodies

Lexan F1 Body, allow G-Force F1 and Original Kyosho hard bodies
Aftermarket front and rear wings are allowed, but must resemble scale F1 wing.
1. - Roller bearing front wings allowed
Driver must be installed
Small body parts can be omitted (halo)
Bodies must be painted in a visible color (No solid white and/or Black allowed)

Weight

140 grams minimum

Modifications

No 3D parts and/or prototype parts allowed
All aftermarket alloy upgrades allowed

Other

This class is identical to 'Formula 1' found in official 28SRA race classes, above rules are general guidelines. For more detail please refer to 28SRA rules.

Other CLASSES

(3 MAKES A CLASS)

"FIGHT CLUB" AKA 3500 GT 28SRA

Skill Level (Beginner – Intermediate – Expert)

Step into the thrilling world of 1/28th scale racing with 3500 GT class, where speed meets precision in the ultimate test of skill and strategy. Drivers are challenged to push the limits of their cars on every lap. The battleground is set with a strict 3500Kv motor limit, ensuring an electrifyingly close competition where victory hinges on expert setup and flawless driving. Are you ready to harness the power and claim victory?

Chassis (98mm -102mm)

1/28 Scale Lipo or AAA style chassis
MR03/MR04 , MWX R.1, Jomerema, GL Racing GLR / GLR-GT / GL-GTR , PNR2.5W, PNR3.0, Atomic MRX/MRZ, Reflex RX28/RX28SE, NEXX Skyline / Specter
- For a full list please refer to 28SRA Rules

Motor/ESC

Any brand 3500kv Brushless motor (Sensorless or Sensored)
Motors internals must remain unaltered with stock rotor, brushes, magnets, comms, etc.
Any ESC Sensored or Sensorless
ESC must remain in blinky mode if applicable

Gearing

64 Pitch Only
10T or 12T Pinion (Depending on track layout)
53T Spur

Wheels (width x diameter)

Front wheels must be 8.5mm x 20mm ONLY (Larger 11mm and 14mm are not allowed)
Rear wheels must be 11mm x 20mm ONLY (Larger 14mm are not allowed)
Mounted tire and wheel diameter cannot exceed 25.5mm
Offset must fit properly inside the body
Any brand, any material (No 3D printed wheels allowed)

Tires

Any brand of Rubber Tires Only (must be a production tire and widely available)
No foam, silicone, Urethane, Ethyl Carbamate, prototype and/or homemade tires.
Traction compounds of any kind is NOT ALLOWED. Tire warmers are allowed.
Tire cleaning with 70% alcohol solution is allowed.

Transmitter

Open

Batteries

2s Lipo 8.4v Max (No HV allowed)

Bodies

Stock Kyosho Autoscale, white plastic bodies , hard bodies not allowed
Lexan windows and/or roofs are allowed
Entire windshield and windows must remain installed
Small body parts can be omitted
Bodies must be painted in a visible color (No solid white and/or Black allowed)
Lexan bodies only
Must properly fit the chassis, trimming for fitment purposes only
GT Bodies for 98mm wheelbase chassis ONLY
LM bodies for 102mm wheelbase chassis ONLY

Weight

160g

Modifications

3D Print Transponder Holder, Body Side Clips, ESC Top Cover allowed.
No other 3D parts and/or prototype parts allowed
All aftermarket alloy upgrades allowed

Other

This class is identical to '3500 GT' found in official 28SRA race classes, above rules are general guidelines. For more detail please refer to 28SRA rules.

"OVERDRIVE" AKA MODIFIED OPEN 28SRA

Skill Level (Beginner – Intermediate – Expert)

Unlimited speed and performance are unlocked in this highly competitive class. This class delivers the fastest lap times and will challenge the most experienced drivers. This class of racing is designed for expert level drivers with lots of racing experience.

(Modified Open 28SRA )

Chassis (94mm – 98mm and 102mm)

Any 1/28 Lipo style chassis
- 2WD only

Motor/ESC

Any brushed 130 motor for Mini-Z
- PN 50T, PN 43T, PN 31T, etc
Open - 16** size brushless motor sensored / sensorless
Any esc sensored / sensorless

Gearing

Open

Wheels (width x diameter)

Any brand plastic or aluminum wheels (No 3D printed, prototype wheels)
Front wheels must be 8.5mm x 20mm or 11mm x 20mm ONLY (Larger 14mm are not allowed)
Rear wheels must be 11mm x 20mm or 14mm x 20mm ONLY
Mounted tire and wheel diameter cannot exceed 25.5mm
Offset must fit properly inside the body

Tires

Any brand of Rubber Tires Only (must be a production tire and widely available
No foam, silicone, Urethane, Ethyl Carbamate, prototype and/or homemade tires.
Traction compounds of any kind is NOT ALLOWED. Tire warmers are allowed.
Tire cleaning with 70% alcohol solution is allowed.

Transmitter

Open – All transmitters allowed (No receiver with built in Gyro and/or any Gyro)

Batteries

2s 8.4v Lipo max (HV not allowed)

Bodies

Any Body
Lexan Bodies
Pan Car/ LMP bodies allowed
Lexan windows and/or roofs are allowed
Entire windshield and windows must remain installed
Small body parts can be omitted
Bodies must be painted in a visible color (No solid white and/or Black allowed)

Weight

No minimum weight

Modifications

3D Print Transponder Holder, Body Side Clips, ESC Top Cover allowed.
All aftermarket alloy upgrades allowed

Other

This class is identical to 'Modified Open' found in official 28SRA race classes, above rules are general guidelines. For more detail please refer to 28SRA rules.

"KNIGHT RIDER" AKA AWD 28SRA

Skill Level (Beginner – Intermediate – Expert)

These cars offer increased traction, acceleration, and tuning possibilities compared to their 2WD counterpart. This class is designed for intermediate to expert level drivers.

Chassis (98mm-102mm)

Any 1/28 AWD Chassis

Motor/ESC

Open

Gearing

Open

Wheels (width x diameter)

Front wheels must be 8.5mm x 20mm – 11mm x 20mm (Larger 14mm are not allowed)
Rear wheels must be 11mm x 20mm or 14mm x 20mm ONLY
Mounted tire and wheel diameter cannot exceed 25.5mm
Offset must fit properly inside the body
Any brand, any material (3D printed not allowed)

Tires

Any brand of Rubber Tires Only (must be a production tire and widely available)
No foam, silicone, Urethane, Ethyl Carbamate, prototype and/or homemade tires.
Traction compounds of any kind is NOT ALLOWED. Tire warmers are allowed.
Tire cleaning with 70% alcohol solution is allowed.

Transmitter

Open

Batteries

2s Lipo Max (No HV allowed)
Any brand AAA NiMH allowed

Bodies

Open
- For MTRC weekend racing Hard bodies are allowed however, they will not be allowed for any sanctioned event. We would then run Lexan bodies only.
Must have installed windows and roof
Must properly fit the chassis, trimming for fitment purposes only
Bodies must be painted in a visible color (No solid white and/or Black allowed)

Weight

No minimum weight

Modifications

Open
All aftermarket alloy parts allowed
3D Print Transponder Holder, Body Side Clips, ESC Top Cover allowed
No other 3d printed parts or prototype parts, all parts/upgrades must be production units and readily available

Other

This class is identical to 'Mod AWD' found in official 28SRA race classes, above rules are general guidelines. For more detail please refer to 28SRA rules.

"DESPICABLE ME" AKA EURO TRUCK & GO KART

Skill Level (Beginner – Intermediate – Expert)

Open to racers who wish to run their car without any restrictions and for those who want to race but whose car is not up to spec with any other class. This class also included AWD and FWD. This is designed to be an inclusive and all-around fun class as it includes cars from all different classes. This class is geared towards the intermediate to expert level driver.

Chassis (Open Wheel)

Any 1/28 AAA and or Lipo style chassis

Motor/ESC

Open

Gearing

Open

Wheels (width x diameter)

Front wheels must be 8.5mm x 20mm – 11mm x 20mm (Larger 14mm are not allowed)
Rear wheels must be 11mm x 20mm or 14mm x 20mm ONLY
Any brand, any material (3D printed allowed)
Offset must fit properly inside the body

Tires

Any brand of Rubber Tires Only (must be a production tire and widely available)
No foam, silicone, Urethane, Ethyl Carbamate, prototype and/or homemade tires.
Traction compounds of any kind is NOT ALLOWED. Tire warmers are allowed.
Tire cleaning with 70% alcohol solution is allowed.

Transmitter

Open

Batteries

2s Lipo Max (No HV allowed)

Any brand AAA NiMH allowed

Bodies

Open
Bodies must be painted in a visible color (No solid white and/or Black allowed)

Weight

No minimum weight

Modifications

Open

"1" AKA LE MANS PROTOTYPE 28SRA

Skill Level (Beginner – Intermediate – Expert)

Le Mans Prototype class is being tested and changes might be made. This class builds off of a Formula 1 style chassis but allows for more powerful motors and has no restrictions on gearing so a new level of speed can be unlocked.

Chassis (112mm-116mm)

MWX R.1 F1
GLF-1 including MWX conversion parts
PNR F1
G-Force F1
Kyosho F1
Nexx F1
Atomic F1 (MRZ/MRX Conversion allowed)

Motor/ESC

35000kv Sensored/Sensorless
No modifications allowed to the motor internals
Any esc sensored/sensorless
No option/aftermarket rotors,
ESC must be in Blinky Mode

Gearing

Open

Wheels (width x diameter)

Any brand plastic or aluminum wheels (No 3D printed, prototype wheels)
Front wheels must be 11mm x (19mm-20mm) ONLY (Larger 14mm are not allowed)
Rear wheels must be 14mm x 20mm ONLY
Mounted tire and wheel diameter cannot exceed 25.5mm
Offset must fit properly inside the body

Tires

Any brand of Rubber Tires Only (must be a production tire and widely available)
No foam, silicone, Urethane, Ethyl Carbamate, prototype and/or homemade tires.
Traction compounds of any kind is NOT ALLOWED. Tire warmers are allowed.
Tire cleaning with 70% alcohol solution is allowed.

Transmitter

Open – All transmitters allowed (No receiver with built in Gyro and/or any Gyro)

Batteries

2s 8.4v Lipo max (HV not allowed)

Bodies

LMP or LMH Bodies only
LMH wing and sind wing must be installed
Bodies must be painted in a visible color (No solid white and/or Black allowed)

Weight

140 grams minimum

Modifications

No 3D parts and/or prototype parts allowed
All aftermarket alloy upgrades allowed

Other

For more details please refer to 28SRA Rules

“WILD WILD WEST” AKA OPEN

Skill Level (Beginner – Intermediate – Expert)

Chassis (Open Wheel)

Any 1/28 AAA and or Lipo style chassis

Motor/ESC

Open

Gearing

Open

Wheels (width x diameter)

Front wheels must be 8.5mm x 20mm – 11mm x 20mm (Larger 14mm are not allowed)
Rear wheels must be 11mm x 20mm or 14mm x 20mm ONLY
Any brand, any material (3D printed allowed)
Offset must fit properly inside the body

Tires

Any brand of Rubber Tires Only (must be a production tire and widely available)
No foam, silicone, Urethane, Ethyl Carbamate, prototype and/or homemade tires.
Traction compounds of any kind is NOT ALLOWED. Tire warmers are allowed.
Tire cleaning with 70% alcohol solution is allowed.

Transmitter

Open

Batteries

2s Lipo Max (No HV allowed)
Any brand AAA NiMH allowed

Bodies

Open
Bodies must be painted in a visible color (No solid white and/or Black allowed)

Weight

No minimum weight

Modifications

Open

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Last updated 11/17/2024