Summary of recent changes
Current class specification.
Any unaltered 2WD production short-course chassis from Traxxas, Team Associated, or Losi. All suspension on the chassis-plate centerline (no offset). Front control arms equal length; rear control arms equal length (adjustable rear arms legal). Rear or mid motor.
Open motor and ESC. Max voltage 8.7V. Battery in stock location.
Any short-course adjustable shocks. Open tire rule (must be short-course tires and rims).
Short course late model body only. No reverse.