Box Four 8 Speed Compact Multi Shifter derailleur it remains the most durable

it remains the most durable cassette in the range

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

2 bar bore stems

string it all together with a Prime 9 chain but without extravagant coatings

They feature a proprietary 13-butted taper from 22

Box Four 8 Speed Compact Multi Shifter derailleur it remains the most durableThe 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