high-performance mountain bike jersey

No drop in performance

and Lock positions

760mm (20mm and 0mm rise)

rear doors

Box Components Box Four 8 Speed Shifter - 8 Speed - 22.2mm Bar Clamp - Multi Shift New Arrival high-performance mountain bike jerseyThe 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