so expansion is as simple as clicking new track into place

And in addition to the 12" version

that you didn't have before due to the tall posts included with this system

close arrangement

Main connector: EC3

Arrma AR320457 Bumper Set Outcast NSR so expansion is as simpleArrma AR320457 Bumper Set Outcast Description Genuine ARRMA front and rear bumper set designed as a direct replacement for select 1 10 Outcast 4S stunt trucks. Manufactured from tough composite material, these bumpers provide long lasting vehicle protection and increased impact resistance during demanding RC use. The matte black finish and molded ARRMA logo maintain the vehicles factory appearance. Features Genuine ARRMA replacement part Orderable