ALUM 2-SPEED SHIFTING SEVO MOUNT 8240X FOR 1/10 TRAXXAS TRX-4 TRX-6 CRAWLERMaterial: AluminiumColor: Black / Red / Silver ColorCompatible for traxxas orginial number: 8240X Compatible for 1/10 TRAXXAS TRX-4 TRX-6 CRAWLER