Black Friday

Arrma Big Rock 3S BLX Parts - Shop replacement parts, upgrades, and hop-up accessories for the Big Rock 1/10 4x4 3S BLX Monster Truck from Arrma RC. Not sure what the part number is? Use our Big Rock parts diagrams to help you narrow your search. If you're looking for performance upgrades, we carry a large selection of option parts and electronics from top brands like Hot Racing, RPM, and Spektrum RC.