Mini-Z Track
Class requirements and info listed below
Novice Box Stock (Training Mode)
Class info and requirements
Chassis: Kyosho Ready-to-Run RWD/AWD/FWD or Team Associated SR27 RWD
Wheelbase: 86mm–106mm
Motor: Kyosho MZ9P or MZ9E RTR motor; Team Associated RTR motor
ESC: Stock brushed
Battery: Kyosho Speed House 4 AAA NiMH
Body: Kyosho ASC – wheelbase must match
Drivetrain: Stock differential only; 6–9T pinion
Wheels: Kyosho wheels only – must not protrude
Tires: Kyosho slick or treaded
Allowed Modifications: T-plate, alloy nuts, Kyosho bumper, 0° alloy knuckles
Minimum Weight: None
Transmitter: Stock kit radio
Box Stock
Class info and requirements
Chassis: Kyosho Ready-to-Run RWD/AWD/FWD or Team Associated SR27 RWD
Wheelbase: 86mm–106mm
Motor: Kyosho MZ9P or MZ9E RTR motor; Team Associated RTR motor
ESC: Stock brushed
Battery: Kyosho Speed House 4 AAA NiMH
Body: Kyosho ASC – wheelbase must match
Drivetrain: Stock differential only; 6–9T pinion
Wheels: Kyosho wheels only
Tires: Kyosho slick or treaded
Allowed Modifications: T-plate, alloy nuts, Kyosho bumper, 0° alloy knuckles
Minimum Weight: None
Transmitter: Stock kit radio
Kyosho EVO
Class info and requirements
Chassis: Kyosho EVO RWD/AWD/FWD
Wheelbase: 86mm–106mm
Motor: Any Kyosho brushless motor
ESC: Kyosho brushless
Battery: Kyosho Speed House 4 AAA NiMH
Body: Kyosho ASC – wheelbase must match
Drivetrain: Stock plastic gear or ball differential; 6–9T pinion
Wheels: Kyosho wheels
Tires: Kyosho slick or treaded
Allowed Modifications: Any Kyosho upgrades
Minimum Weight: 160g
Transmitter: Any radio
2WD Stock
Class info and requirements
Chassis: EVO, SR27, MRC MR01, and PNR2.5W RWD
Wheelbase: 86mm–106mm
Motor: 3500kv
ESC: Brushless
Battery: 4 AAA NiMH
Body: Any hard plastic body – must be complete
Drivetrain: Fixed 64p, 16/53 ratio (yellow spur + blue 16T pinion)
Wheels: Any wheels – must not protrude
Tires: Rubber Mini-Z production tires only
Allowed Modifications: Any
Minimum Weight: 160g
Transmitter: Any radio
GTLM Super Stock
Class info and requirements
Chassis: Any 1/28 scale
Wheelbase: 86mm–106mm
Motor: 2500kv
ESC: Open, sensored or sensorless
Battery: Up to 8.4 VDC
Body: Hard plastic – must be complete
Drivetrain: Fixed 64p, 14/53 ratio (yellow spur + brown/red 14T pinion)
Wheels: Any wheels
Tires: Rubber Mini-Z production tires only
Allowed Modifications: Any
Minimum Weight: 160g
Transmitter: Any radio
Formula 1
Class info and requirements
Chassis: Any 1/28 aftermarket Formula 1 chassis
Wheelbase: Any
Motor: 2500kv
ESC: Open, sensored or sensorless
Battery: Up to 8.4 VDC
Body: Lexan or 3D-printed F1 body
Drivetrain: Fixed 64p, 12/53 ratio (yellow spur + green 12T pinion)
Wheels: Any – front max 80mm / rear max 82mm
Tires: Rubber Mini-Z production tires only
Allowed Modifications: Any
Minimum Weight: 140g
Transmitter: Any radio
Open Class
Class info and requirements
Chassis: Any 1/28 scale
Wheelbase: 86mm–106mm
Motor: Any
ESC: Open, sensored or sensorless
Battery: Up to 8.4 VDC
Body: Lexan body – must be complete
Drivetrain: Any
Wheels: Any wheels
Tires: Rubber Mini-Z production tires only
Allowed Modifications: Any
Minimum Weight: None
Transmitter: Any radio