The Box Components One 11-speed rear derailleur with an extra-long fork head is a high-quality derailleur featuring multiple technologies, such as Tri-Pack technology, which enables an innovative chain tension spring. This significantly reduces the rebound of the fork head and chain rattling. The Tri-Pack system also maintains tension for better chain wrapping. The strength of this spring can be adjusted to achieve the best feel at the shifter and while holding the chain. This technology has proven itself at one of the largest freeride events in the world, the Red Bull Rampage.

The Box Components One 11-speed rear derailleur with an extra-long chain is compatible with the Box Components One 11-speed shifter as well as the Box Components Two 11-speed shifter.

• Gears: 11 speeds (compatible with Shimano MTB - DynaSys11).
• Material: Aluminum 6061-T6 and carbon fiber
• Pulleys: sealed precision bearings
• Minimum number of teeth: 10
• Maximum number of teeth: 50
• Inner and outer cap: forged
• Weight: 294 g
• Technologies: Tri-Pack, strong 3D forged parts, Pivot-Tech

Compatibility: The Box Components One 11-speed derailleur is not compatible with Shimano Direct Mount dropouts.