When Claas introduced the revamped 7000 and 8000 hybrid Lexions, it also unveiled some new walker models, which are now available in the UK and Ireland. We tested the biggest of the five-walker models, the Terra Trac 5500

It might still carry the Lexion name, but the changes in the new 5000s and 6000s are as big a leap as when the Mega gave way to the first Lexions over 20 years ago. Most significantly the drum and concave are 26% bigger in diameter and, for the first time, Claas’s engineers have added a rotary separator to the firm’s walker machines.