• All rear motor 2WD buggies produced 1997 or earlier

• Maximum motor size: 17.5 brushless or 19T brushed

• ESC in blinky mode – No boost or timing allowed

• Open electronics, shocks, tires, and wheels

• LIPO batteries allowed (2S maximum @ 8.4v)

• Period correct parts and updates

Class Examples: RC10, RC10B2, RC10B3, JRX2, Losi XX, Ultima, Triumph, ProX, TRX 

• All original issued rear motor 2WD buggies produced 1998 or later

• Maximum motor size: 17.5 brushless or 19T brushed

• ESC in blinky mode – No boost or timing allowed

• Open electronics, shocks, tires, and wheels

• LIPO batteries allowed (2S maximum @ 8.4v)

• Period correct parts and updates

Class Examples: RC10B4, RC10B5, Losi XXX, Losi 22, Serpent, RB6, Genova, Traxxas Bandit (1998 or newer) 

• All rear motor 2WD buggies produced 1990 or earlier

• Maximum motor size: 21.5 brushless (ROAR Approved) or 27.5 brushed

• ESC in blinky mode – No boost or timing allowed

• Open electronics, tires, and wheels

• LIPO batteries allowed (2S maximum @ 8.4v)

• Original shocks required (No 12mm/13mm shocks)

• RC10s must have 5-gear gearbox

• Period correct parts and updates, including

  • Trinity-style composite craft chassis 1988 and earlier

  • JJ 1987 Kyosho Ultima Kit

Class Examples: RC10 5 Gear Pan Car, TQ10, JRX2, JRX Pro, Junior 2, Ultima, Astute, Turbo Scorpion

• All 4WD buggies produced 1985-1996

• Maximum motor size: 13.5 brushless (ROAR Approved) or Open brushed

• ESC in blinky mode – No boost or timing allowed

• Open electronics, shocks, tires, and wheels

• LIPO batteries allowed (2S maximum @ 8.4v)

• Period correct parts and updates

Class Examples: MIP Legends 410, Schumacher XLS Cat, Cat 2000, Yokomo 834B, Yokomo 870C, Yokomo YZ10, Kyosho Mid Series

• All 4WD buggies produced 1997-2005

• Maximum motor size: 10.5 brushless (ROAR Approved) or Open brushed

• ESC in blinky mode – No boost or timing allowed

• Open electronics, shocks, tires, and wheels

• LIPO batteries allowed (2S maximum @ 8.4v)

• Period correct parts and updates

Class Examples: XX4, XXX4, MX4, MR4BC, BJ4, Cat 2000SE, Cat3000, Lazer ZXS, Predator

• All rear motor stadium trucks produced 1996 or earlier

• Maximum motor size: 13.5 brushless (ROAR Approved) or Open brushed

• ESC in blinky mode – No boost or timing allowed

• Open electronics, shocks, tires, and wheels

• LIPO batteries allowed (2S maximum @ 8.4v)

• Period correct parts and updates

Class Examples: RC10T, RC10T2, JRXT, Outlaw Ultima, Pro XRT, Eagle, SRT

• All rear motor stadium trucks produced 1997 or later

• Maximum motor size: 13.5 brushless (ROAR Approved) or Open brushed

• ESC in blinky mode – No boost or timing allowed

• Open electronics, shocks, tires, and wheels

• LIPO batteries allowed (2S maximum @ 8.4v)

• Period correct parts and updates

Class Examples: RC10T3, RC10T4, XXXT, Matt Francis MF1, Matt Francis MF2, Traxxas Rustler, Kyosho RT6

• All "non-pro" entry-level 2WD & 4WD buggies produced 1995 or earlier

• Handout Tamiya motors only

• Plastic tub chassis required

• Period correct parts and updates

Class Examples: Hornet, Mauri Ninja, VOS, Manta Ray, Hotshot, Madcap, Kyosho Lazer Alpha (w/o aftermarket top deck)