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The BOX Two 11-speed rear derailleur features a tri-pack limited slip clutch to reduce derailleur cage bounce and chain slap. 3D forged linkages provide superior durability while an impact-resistant cable stay keeps cable and housing out of harm’s way.

• The BOX Two 11-speed rear derailleur features a tri-pack limited slip clutch to reduce derailleur cage bounce and chain slap. 3D forged linkages provide superior durability while an impact-resistant cable stay keeps cable and housing out of harm’s way.
• Tri-Pack Limited Slip Clutch system reduces derailleur cage bounce and chain slap, while also maintaining tension for better chain wrap
• Impact resistance is improved by forged linkages
• Pivot-Tech spring-loaded cable stay keeps cables and housing out of harm’s way