RJ Speed Retro Racing – Breakout (Oval)

Class RulesRJ Speed Retro RacingEffective Jul 13, 2026· Updated 1 month ago

Summary of recent changes

Official ThunderDome rulebook (rev 2026-07-13). Discipline: Oval.

Spec sheet

Governing

Notes: Breakout racing (3.80s); 3mm min ride height; any battery/ESC/servo/motor/gearing; SXT Black tire sauce only

Motor & ESC

Motor type: Open
Motor turn: Modified / open
ESC: Open

Tires

Spec tire: Open rubber or foam
Tire additive: Spec sauce only

Weight & body

Body: RJ Speed bodies

Chassis & Suspension

Chassis: RJ Speed Legends / Spec Modified / Classic Sportsman

1.Chassis Spec

RJ Speed Legends (#2010 / #2011 / #2012) / RJ Speed Spec Modified (#2014) / RJ Speed Classic Sportsman Racer (#2017).

2.Tire and Wheel Spec

OPEN Rubber or Foam.

3.Body Spec

RJ Speed bodies for specific chassis.

4.Ride Height Spec

3mm minimum.

5.Breakout Time

3.80 seconds (any lap faster than the set time will not count).

Any battery / ESC / servo mounted anywhere on chassis, any turnbuckles, motor, gearing. Anything goes besides specific chassis and bodies — it's breakout racing, just have some fun in cool looking RETRO rides.