Summary of recent changes
Official ThunderDome rulebook (rev 2026-07-17). Discipline: Oval & On-Road.
RTR LOSI Nascar with stock body mounts, front and rear splitter, OR RTR LOSI ZL1 Asphalt Late Model with stock body mounts, front and rear splitter. Un-modified. No removing any parts. No heating or bending parts.
Minimum 945g in race-ready trim.
Stock SPMXE3125RX / Stock SPMXSE3325RX / SLT RX / 25A Brushed ESC IC2 plug.
Stock SPMX142S30H2 Spektrum 1400 2S 7.4V Smart G2 30C lipo / Ovonic 1700 2S with IC2 plug / Ovonic 1400 2S with IC2 plug. MAX temp 90F at tech table. 8.40 MAX VOLTAGE. Battery in stock battery box location.
LOS-1914 (medium) or LOS-1937 (soft) / LOS-3779 (medium) Asphalt Late Model. Sidewall glueing allowed.
Stock LOS-1907 28-turn 380 or ARRMA ARA390305 28-turn 380 with original bullet plugs from LOS-1907 installed. LOSI Nascar 380 Aluminum Motor Heatsink LOS-1920 allowed.
LOSI Camaro / LOSI Camry / LOSI Mustang / Pro-Line 96 Monte Carlo / Pro-Line 90 Lumina / Pro-Line 96 Thunderbird / Pro-Line Dirt Late Model / Pro-Line 86 Monte Carlo / Pro-Line Tundra / Pro-Line F-150 / Pro-Line Silverado / Pro-Line Ram / Losi ZL1 Asphalt Late Model. All bodies precut, no body trimming. Mounted at stock height, not lowered.
Shock oil & diff grease open. Motor fan may be any 25mm x 25mm fan. Stock springs, bearings, pinion, spur, servo & RTR radio only. No LOSI option parts besides heatsink. All chassis screws must be installed.
2-4 minute heats – 60-250 lap mains (OVAL) / 5 minute qualifiers – 5 minute mains (ON-ROAD).
SXT Black ONLY.