The maximum weight of the bike, rider and luggage is 170 kilos: This means an extreme load for all components when travelling. You can expect 40 kilos from the in-house rear carrier and 20 from the front. This is already at the limits of rideability. A low-torsion double bridge fork suspends the luggage from the front carrier. This special fork was developed exclusively for the Expedition AT in co-operation with Suntour.
Giant was one of the first manufacturers to use aluminium as a frame material. As a result, the company has extensive experience in the properties, selection and processing of this lightweight metal. The frame consists of liquid-moulded, extruded tubes, which are designed to increase frame stability.
Two parallel, ovalised tubes are used as the top tube. They utilise the entire width of the head tube and seat tube for support and are braced together. Together with the widely flared down tube on the head tube, this results in lateral stability on the front frame that is not affected by a 20-kilo load on the front carrier. The rear triangle performs similarly: the highly oval-shaped seat stays centre the seat tube, while the chain stays use the entire bottom bracket shell as a support width: the extreme bike rolls as smoothly with maximum luggage as it does without.
