BOX STOCK RACE CLASS

KYOSHO BOX STOCK

WHEELBASE

90-102MM

RWD RTR CHASSIS

Kyohso MR03S, MR03S2, MR03, MR04

BODY

• Kyosho original AutoScale body

• White body

• Jomurema GT01 and TRP Scale body

• PN Racing C9

• GL Hard Bodies

• All parts must originate from OEM body - NO mods

• Limited wheel clearance modification allowed

• Minimum weight limit: 24g

TRANSMITTER (TX)/RECEIVER (RX)

• Original RTR Kyosho TX/RX - NO mods 

• No Gyro's, no RX Gyro

MOTOR

• RTR Kyosho MZ9P or MZ9E motor

• Motor wire change and removal of thermal safety switch allowed

GEAR RATIO

• Fixed 9T Pinion with Stock Gear Diff

• Pinion brand - Kyosho or PN 400329 MR2709 only

Electronic Speed Control (ESC)

• Stock Kyosho ESC, NO mods

WHEELS

• Kyosho production wheels

• PN/flanged disc plastic wheels

• Front: 8.5mm x 20mm

• Rear: 11mmx20mm

• Offset: Tucked or flush, must not extend past the body

TIRES

ALLOWED

• Kyosho, Marka or PN rubber tires

• Maximum mounted tire diameter: 25.5mm

• Tire warmers

• Tire cleaner: 70% alcohol solution

NOT ALLOWED

• Homemade, foam, silicon, urethane, Ethyl Carbamate tires

• Tire inserts

• Traction compounds on tire or race surface

NOTE: Drivers using tire cleaners that have been deemed illegal will be penalized.

****Please discuss any tire cleaner inquiries with staff. ****

MODIFICATIONS

• Stock configuration only

• Exception - MR-03 King Flip allowed

OPTIONAL PARTS

• Kyosho or PN Ball Bearings

• Front Springs

• Wheel nuts

• T-Plate

BATTERIES

CHEMISTRY: NiMH, Ni-Cd, Alkaline

QTY: (4) AAA

CAPACITY: 700mAh - 900mAh