BOX Two Prime 9 Speed Twin Lever Shifter - Black - Single Shift - 22.2mm Bar Clamp - 9 Speed PDP|Colour The stem has more material

The stem has more material taken out to save weight

Pros: Maximum protection and an extremely grippy sole

Max cassette range: Can handle up to a 10-51T cassette

9mm tips on straight blades for small

Swappable cleats giving 15° or 20° release angle

BOX Two Prime 9 Speed Twin Lever Shifter - Black - Single Shift - 22.2mm Bar Clamp - 9 Speed PDP|Colour The stem has more materialBox's goal with Prime 9 was to blend all the durability and reliability from a traditional 3x9 drivetrain with a 1x setup. Box Two is the performance middle tier option within the Prime 9 lineup. With Prime 9 you still get the wide range offered on competing 12 speed setups, but with fewer shifts required to go up and down the gear range. The Box Two shifter maintains all the great functionality of the Box One but forgoes the 1 piece pull lever from