Shimano alivio t4000 v brake 9sp shifter setalivio has been used on trekking bikes for many years and now shimano have released a dedicated trekking groupset the new alivio trekking components are now slimmer quieter and offer a smoother ride than ever before the first thing that stands out at the alivio mountain bike groupset is the new design the shimano alivio t4000 sti shifters are a rapid fire plus brakegear lever combination with a 3 finger lever and a large gear display features3 f