4.4 Formula 1

4.4.1 Chassis
GL Racing GLF-1, G-Force Formula, PNR 3.0F1, MWX

4.4.2 Wheelbase
Only wheelbase allowed shall be 112mm – 116mm.

4.4.3 Motor
Any manufacturer 2500Kv motor is allowed, sensored or sensorless. Max can diameter is 16mm. No option or aftermarket rotors are allowed. Maximum Kv is 2800. Refer to Race Tech>Motor section for additional information.

4.4.4 Gear Ratio
Any manufacturer pinion and spur allowed, tooth count must be distinguishable by markings or color for easy tech. All gears must be Pre-Event teched and painted. 
More than 25 tile straightaway - 12T Pinion / 53T Spur

4.4.5 Wheels
All brand plastic and aluminum 28-scale production wheels are allowed. The front-wheel width must be 11mm and the rear-wheel width must be 14mm, not including an outer flange or disk. The maximum wheel diameter is 20mm. All wheels must be original designs made for 28-scale cars.

4.4.6 Tires
Refer to General Rules>Tires section for information. Max tire diameter while mounted on the wheel, shall not exceed 25.5mm.

4.4.7 Batteries
2-cell LiPo or 2 one-cells paralleled maximum 8.4 volts. An additional battery is allowed and may only be connected to a transponder.

4.4.8 ESC / Receiver
Any manufacturer ESC and Receiver is allowed. Sensored ESC must have and be in BLINKY MODE.
Any receiver with a built-in Gyro is not allowed. Gyro’s are not allowed.

4.4.9 Body
Lexan F1 Bodies only. Refer to General Rules>Body & Modifications, Lexan F1 bodies for a list of approved bodies. Aftermarket front and rear wings are allowed but must look like an F1 wing. Bearings in the front wing are allowed.

4.4.10 Option Parts
Any after-market 28-scale publicly available production or 3D printed parts are allowed. Prototype parts are NOT allowed. Refer to General Rules>Prototype and 3D Printed parts section for additional information. Adding weight via tungsten putty, stick weight, or cut hobby brass is allowed.

4.2   Box Stock - RMS

4.2.1 Driver Restriction - Mod GT, Mod AWD, or Mod Open drivers are NOT allowed. 

4.2.2 Chassis Kyosho MR03S, MR03S2, and MR03 RWD.

4.2.3 Wheelbase - Only wheelbases allowed shall be 90mm, 94mm, 98mm, and 102mm.

4.2.4 Motor - Kyosho MZ9P, MZ9E Motor from RTR, and PN 70 turn (PNR132370). Allowed to change the motor wires and remove the safety switch. Motor must be run as it was manufactured; no motor manipulation of any kind is allowed.

4.2.5 Gear Ratio - 6T - 9T Pinion included with RTR kits, or PN 9T (PNR400329) with Stock Kyosho Gear Diff only.

4.2.6 Wheels - All brand plastic and aluminum 28-scale production wheels are allowed. The maximum front-wheel width is 8.5mm and the rear-wheel width is 11mm, not including an outer flange or disk. The maximum wheel diameter is 20mm. All wheels must be original designs made for 28-scale cars. Wheel and tire must fit inside the body. 

4.2.7 Tires - Refer to General Rules>Tires section for information. Max tire diameter while mounted on the wheel shall not exceed 25.5mm.

4.2.8 Batteries - Cars must be powered by 4, AAA batteries. Alkaline, Ni-MH, or Ni-Cd batteries may be used. No other type of battery may be used. An additional battery is allowed and may only be connected to a transponder.

4.2.9 Electronics & Transmitter - Only Kyosho original items included in the box are allowed, with NO modifications.

4.2.10 Body - Any manufactured molded hard shell that fits the allowed wheelbase. All parts must be the original for that body. Limited wheel and ground clearance modifications are allowed. Body material may not be shaved or thinned for weight reduction. Lexan roofs, windows, and wings are not allowed. Aftermarket plastic wings are allowed. Refer to General Rules>Body & Modifications, Hard Bodies section for additional information.

4.2.11 Option Parts - Any manufacture ball bearings, nuts, screws, springs, shims, and T-Plates allowed. Any manufacture t-plate mount, steering knuckles, disk damper set, center shock, and front body mount with body adaptor is allowed. Only those 5 above listed items can be upgraded. No aftermarket front suspensions or rear pods allowed. Adding weight via tungsten putty, stick weight, or cut hobby brass is allowed. 

4.2.12 Modifications - The car must be run in stock configuration. Kingpin flip is allowed, kingpin must be cut to prevent track damage. 

4.3 LiPo Stock

4.3.1 Chassis
Kyosho MR03S, MR03S2, & MR03 RWD, Jomurema, GL Racing GLR, GLR-GT, GL-GTR, MRC MRC01, PN PNR2.5W,
PNR3.0, RTRC RTA, Atomic MRZ, Reflex RX28, RX28SE, NEXX Skyline, Specter, MWX R.1, G-Force Lightning

4.3.2 Wheelbase
Only wheelbases allowed shall be 98mm and 102mm.

4.3.3 Motor
Any manufacturer 2500Kv motor is allowed, sensored or sensorless. Max can diameter is 16mm. No option or aftermarket rotors are allowed. Maximum Kv is 2800. Refer to Race Tech>Motor section for additional information.

4.3.4 Gear Ratio
Any manufacturer pinion and spur allowed, tooth count must be distinguishable by markings or color for easy tech. All gears must be Pre-Event teched and painted. 
More than 25 tile straightaway - 12T Pinion / 53T Spur

4.3.5 Wheels
All brand plastic and aluminum 28-scale production wheels are allowed. The maximum front-wheel width is 8.5mm and the rear-wheel width is 11mm, not including an outer flange or disk. The maximum wheel diameter is 20mm. All wheels must be original designs made for 28-scale cars. The wheel and tire must fit inside the body.

4.3.6 Tires
Refer to General Rules>Tires section for information. Max tire diameter while mounted on the wheel shall not exceed 25.5mm.

4.3.7 Batteries
2-cell LiPo or 2 one-cells paralleled maximum 8.4 volts. An additional battery is allowed and may only be connected to a transponder.

4.3.8 ESC / Receiver
Any manufacturer ESC and Receiver is allowed. Sensored ESC must have and be in BLINKY MODE.
Any receiver with a built-in Gyro is not allowed. Gyro’s are not allowed.

4.3.9 Body
Any manufactured molded hard shell that fits the allowed wheelbase. All parts must be the original for that body. Limited wheel and ground clearance modifications are allowed. The body must weigh a minimum of 26 grams. Side clips if used, are considered part of the body. Lexan roofs, windows, and wings are allowed. Aftermarket plastic wings are allowed. Refer to General Rules>Body & Modifications, Hard Bodies section for additional information.

4.3.10 Option Parts
Any aftermarket 28-scale publicly available production or 3D printed parts are allowed. Prototype parts are NOT allowed. Refer to General Rules>Prototype and 3D Printed parts section for additional information. Adding weight via tungsten putty, stick weight, or cut hobby brass is allowed.

4.6 3500 GT

4.6.1 Chassis
Kyosho MR03S, MR03S2, and MR03 RWD, Jomurema, GL Racing GLR, GLR-GT, GL-GTR, MRC MRC01, PN PNR2.5W,
PNR3.0, RTRC RTA, Atomic MRZ, Reflex RX28, RX28SE, NEXX Skyline, Specter, MWX R.1, G-Force Lightning

4.6.2 Wheelbase
Only wheelbases allowed shall be 98mm and 102mm.

4.6.3 Motor
Any manufacturer 3500Kv motor is allowed, sensored or sensorless. Max can diameter is 16mm. No option or aftermarket rotors are allowed. Maximum Kv is 3800. Refer to Race Tech>Motor section for additional information.

4.6.4 Gear Ratio
Any manufacturer pinion and spur allowed, tooth count must be distinguishable by markings or color for easy tech. All gears must be Pre-Event teched and painted. 
More than 25 tile straightaway - 12T Pinion / 53T Spur

4.6.5 Wheels
All brand plastic and aluminum 28-scale production wheels are allowed. The maximum front-wheel width is 8.5mm and the rear-wheel width is 11mm, not including an outer flange or disk. The maximum wheel diameter is 20mm. All wheels must be original designs made for 28-scale cars. Wheel and tire must fit inside the body.

4.6.6 Tires
Refer to General Rules>Tires section for information. Max tire diameter while mounted on the wheel shall not exceed 25.5mm.

4.6.7 Batteries
2-cell LiPo or 2 one-cells paralleled maximum 8.4 volts. An additional battery is allowed and may only be connected to a transponder.

4.6.8 ESC / Receiver
Any manufacturer ESC and Receiver is allowed. Sensored ESC must have and be in BLINKY MODE.
Any receiver with a built-in Gyro is not allowed. Gyro’s are not allowed.

4.6.9 Body
Lexan GT Bodies only. Refer to General Rules>Body & Modifications, Lexan GT bodies for a list of approved bodies.

4.6.10 Option Parts
Any after-market 28-scale publicly available production or 3D printed parts are allowed. Prototype parts are NOT allowed. Refer to General Rules>Prototype and 3D Printed parts section for additional information. Adding weight via tungsten putty, stick weight, or cut hobby brass is allowed.

4.7 Modified AWD

4.7.1 Chassis
Kyosho Mini-Z Racer AWD MA010, MA015, MA020 and MA030, Atomic BZ and SZ2, GL Racing
GLA, GLA Giulia, Mini-Q Q7

4.7.2 Wheelbase
Only wheelbases allowed shall be 98mm and 102mm.

4.7.3 Motor
Any manufacturer motor is allowed, sensored or sensorless. Max can diameter is 16mm.

4.7.4 Gear Ratio
Open

4.7.5 Wheels
All brand plastic and aluminum 28-scale production wheels are allowed. The maximum front-wheel width is 11mm and the rear-wheel width is 14mm, not including an outer flange or disk. The maximum wheel diameter is 20.5mm. All wheels must be original designs made for 28-scale cars. Wheel and tire must fit inside the body.

4.7.6 Tires
Refer to General Rules>Tires section for information. No max tire diameter.

4.7.7 Batteries
2-cell LiPo or 2 one-cells paralleled maximum 8.4 volts. An additional battery is allowed and may only be connected to a transponder.

4.7.8 ESC / Receiver
Any manufacturer ESC (sensored or sensorless) and Receiver is allowed.
Any receiver with a built-in Gyro is not allowed. Gyro’s are not allowed.

4.7.9 Body
Lexan GT Bodies only. Refer to General Rules>Body & Modifications, Lexan GT bodies, for a list of approved bodies.

4.7.10 Option Parts
Any aftermarket 28-scale publicly available production or 3D printed parts are allowed. Prototype parts are NOT allowed. Refer to General Rules>Prototype and 3D Printed parts section for additional information. Adding weight via tungsten putty, stick weight, or cut hobby brass is allowed.

4.8 Modified GT

4.8.1 Chassis
Kyosho MR03S, MR03S2, and MR03 RWD, Jomurema, GL Racing GLR, GLR-GT, GL-GTR, MRC MR01, PN PNR2.5W,
PNR3,0 RTRC RTA, Atomic MRZ, Reflex RX28, RX28SE, NEXX Skyline, Specter, MWX R.1, G-Force Lightning

4.8.2 Wheelbase
Only wheelbases allowed shall be 94mm, 98mm and 102mm.

4.8.3 Motor
Any manufacturer motor is allowed, sensored or sensorless. Max can diameter is 16mm.

4.8.4 Gear Ratio
Open

4.8.5 Wheels
All brand plastic and aluminum 28-scale production wheels are allowed. The maximum front-wheel width is 11mm and the rear-wheel width is 14mm, not including an outer flange or disk. The maximum wheel diameter is 20mm. All wheels must be original designs made for 28 scale cars. Wheel and tire must fit inside the body.

4.8.6 Tires
Refer to General Rules>Tires section for information. No max tire diameter.

4.8.7 Batteries
2-cell LiPo or 2 one-cells paralleled maximum 8.4 volts. An additional battery is allowed and may only be connected to a transponder.

4.8.8 ESC / Receiver
Any manufacturer ESC (sensored or sensorless) and Receiver is allowed.
Any receiver with a built-in Gyro is not allowed. Gyro’s are not allowed.

4.8.9 Body
Lexan GT Bodies only. Refer to General Rules>Body & Modifications, Lexan GT bodies for a list of approved bodies.

4.8.10 Option Parts
Any aftermarket 28-scale publicly available production or 3D printed parts are allowed. Prototype parts are NOT allowed. Refer to General Rules>Prototype and 3D Printed parts section for additional information. Adding weight via tungsten putty, stick weight, or cut hobby brass is allowed.

4.9 Modified Open

4.9.1 Chassis
Open any 2WD chassis ONLY. Prototype or pre-production chassis allowed.

4.9.2 Wheelbase
Only wheelbases allowed shall be 94mm, 98mm and 102mm.

4.9.3 Motor
Any manufacturer motor is allowed, sensored or sensorless. Max can diameter is 16mm.

4.9.4 Gear Ratio
Open

4.9.5 Wheels
All brand plastic and aluminum 28-scale production wheels are allowed. The maximum front-wheel width is 11mm and the rear-wheel width is 14mm, not including an outer flange or disk. The maximum wheel diameter is 20mm. All wheels must be original designs made for 28-scale cars. Wheel and tire must fit inside the body.

4.9.6 Tires
Refer to General Rules>Tires section for information. No max tire diameter.

4.9.7 Batteries
2-cell LiPo or 2 one-cells paralleled maximum 8.4 volts. An additional battery is allowed and may only be connected to a transponder.

4.9.8 ESC / Receiver
Any manufacturer ESC (sensored or sensorless) and Receiver is allowed.
Any receiver with a built-in Gyro is not allowed. Gyro’s are not allowed.

4.9.9 Body
Lexan Pan Car and LMP Bodies only. Refer to General Rules>Body & Modifications, Lexan pan car and LMP bodies for a list of approved bodies. Cutting the rear panel is allowed.

4.9.10 Option Parts
Open any parts allowed (including homemade parts, 3D-printed, and prototype parts.)

4.3 AAA Stock

4.3.1 Chassis
Kyosho MR03S, MR03S2, & MR03 RWD, Jomurema, MRC MRC01, PN PNR2.5W,

4.3.2 Wheelbase
Only wheelbases allowed shall be 90mm - 98mm

4.3.3 Motor
Any manufacturer 3500Kv motor is allowed, sensored or sensorless. Max can diameter is 16mm. No option or aftermarket rotors are allowed. Maximum Kv is 3800. Refer to Race Tech>Motor section for additional information.

4.3.4 Gear Ratio
Any manufacturer pinion and spur allowed, tooth count must be distinguishable by markings or color for easy tech. All gears must be Pre-event teched and painted. 
More than 25 tile straightaway - 16T Pinion / 53T Spur

4.3.5 Wheels
All brand plastic and aluminum 28-scale production wheels are allowed. The maximum front-wheel width is 8.5mm and the rear-wheel width is 11mm, not including an outer flange or disk. The maximum wheel diameter is 20mm. All wheels must be original designs made for 28-scale cars. Wheel and tire must fit inside the body.

4.3.6 Tires
Refer to General Rules>Tires section for information. Max tire diameter while mounted on the wheel shall not exceed 25.5mm.

4.3.7 Batteries
Cars must be powered by 4, AAA batteries. Alkaline, Ni-MH, or Ni-Cd batteries may be used. No other type of battery may be used. An additional battery is allowed and may only be connected to a transponder.

4.3.8 ESC / Receiver
Kyosho ASF VE VE Pro MR03S RWD and EVO, PN 16A ESC (#500807 and #500807A). Any receiver with a built-in Gyro is not allowed. Gyro’s are not allowed.

4.3.9 Body
Any manufactured molded hard shell that fits the allowed wheelbase. All parts must be the original for that body. Limited wheel and ground clearance modifications are allowed. The body must weigh a minimum of 26 grams. Side clips if used, are considered part of the body. Lexan roofs, windows, and wings are allowed. Aftermarket plastic wings are allowed. Refer to General Rules>Body & Modifications, Hard Bodies section for additional information.

4.3.10 Option Parts
Any aftermarket 28-scale publicly available production or 3D printed parts are allowed. Prototype parts are NOT allowed. Refer to General Rules>Prototype and 3D Printed parts section for additional information. Adding weight via tungsten putty, stick weight, or cut hobby brass is allowed.