The Record groupset presents the Record 10 Speed Ultra Narrow chain that is just 5.9mm wide. Owing to its dimensions, it is lighter, moer quiet, and facilitates adjustment of the rear derailleur. Chain links and pins have also been lightened and the chain weighs only 255g in all.

Features and benefits:

• HD-Link -  extremely high retention force
• Lightened links - weight savings
• Antifriction treatment - smoothness, long life 
• Hollow pins - weight savings
• Width 5.9mm - quiet operation, less interference with adjacent sprockets and chainrings, high-performance shifting

Tech specs:

• 10s - width 5.9mm
• Ni-PTFE Finish
• 114 links
• Ultra-Drive
• HD-Link for Ultra Narrow chain
• Lightened links 
• Hollow pins
• Weight - 255g