This set 42007 'Moto Cross Bike' is the next bike in a long history of motorcycles in Lego Technic theme. Taking all types of motorcycles number 32 and de 2nd Cross motorcycle. The first most realistic was the 8291 - Dirt Bike. The designs are pretty similar.
This bike has a working 2 cylinder v-block and suspension. All in all a nice model of a cross motorbike. Although a small set the balance of parts is good for alternative builds despite the fact it only has 2 wheels.
However nowadays motorcycles are more regularly released over the different years. Not like in the years 1998, 1999 and 2000 in which respectively 7, 8 and 4 motorcycle sets were released, just under 20 sets in 3 years! Where first in the older models flexible tubes and ribbed hoses were used to create the curvatures of typical motorcycles, since 8420 - Street Bike panel fairings are used to follow a more realistic representation of bodywork of motorcycles.