The trailer features: solid axle suspension on all axles, one set of lights, kingpin, mechanical parking break, gooseneck frame support, remotely controlled liftable third axle, remotely lowering and lifting of the deck and this model has many details.
This newly design and engineered trailer utilizes the same suspension as both "US Truck T1 MkII" and "US Truck T2 MkII". It uses LEGO® rubber belts and LEGO® rubber axle connectors.
Designing and engineering this trailer parts availability is checked. So it can easily be build in the color as it is, Yellow, but it can also be build in Red, Blue and Black.
Attention!!!: Both "US Truck T1 MkII" and "US Truck T2 MkII" needs to be adapted to be combined with "Trailer Tr4 MkII”!!!
Else could be used a so called dolly which acts as a convert to fit the trailer. For this dolly building instructions will be available soon.
Attention!!!: LEGO® Technic set 8258 Crane Truck needs to be adapted and requires a modified gooseneck!!! Instructions for "Trailer Tr4 MkII” to go with LEGO® Technic set 8258 Crane Truck will be available soon!