Pololu Dagu Wild Thumper 4WD All-Terrain Chassis, Black, 34:1

Dagu Wild Thumper 4WD All-Terrain Chassis, Black, 34:1. This rugged, 4-wheel-drive chassis from Dagu Electronics has independent suspension for each of its spiked 120mm-diameter wheels, allowing exceptional traction over uneven terrain, and its body is made from 2mm-thick anodized aluminum with a 10mm-pitch grid of 4mm holes, making it easy to mount electronics and accessories to the chassis. Assembly of the chassis is a simple three-step process that takes just minutes. This model is black with metallic-red hubs and 34:1 steel gearboxes on the motors.