Box Components Box Four 8 Speed Shifter - 8 Speed - 22.2mm Bar Clamp - Single Shift YGroup_7742244290605 4 preset EQs to choose

4 preset EQs to choose + 2 custom modes to tailor your experience

(the 29" extended has 170mm travel) Gold and Blue CTS compression valves are included and others are available separately

the new Atlas handlebar makes the decision easy to head up for your second-last run

Can't use the air release button to fine-tune air pressures when used with Presta valves

Body Material: Forged aluminium

Box Components Box Four 8 Speed Shifter - 8 Speed - 22.2mm Bar Clamp - Single Shift YGroup_7742244290605 4 preset EQs to chooseThe Box Four shifter's main features aren't strikingly different from Box Three's. The key difference is its 8 speed platform. They've chosen to modernise the 8 speed in much the same way they did the 9 speed for Prime 9. Just like the Prime 9, the Box Four shifters take advantage of the "less is more" theme and exploit durability, simplicity, and reliability. Available as a multi shift (pull several gears at once) or single shift shifter (a sound