Box Four 8 Speed Compact Multi Shifter derailleur 2 bar bore stems

2 bar bore stems

They feature a proprietary 13-butted taper from 22

Box Two™ Chainrings are round and true

This creates a great hub for anyone looking for a solid

Box One Single-Speed Aluminum Cogs are 7075-T6 aluminum alloy

Box Four 8 Speed Compact Multi Shifter derailleur 2 bar bore stemsThe Box Four shifter's main features aren't strikingly different from Box Three's. The key difference is its 8 speed platform. We've chosen to modernize the 8 speed in much the same way we 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 choice