The hollow forged chainrings provide a significant save weight and increased rigidity and guarantees optimum power transfer and further improved shifting characteristics.

Product features

• Use: Road
• Group: Ultegra 11-speed
• Teeth: 50 (MA), 52 (MB) 53 (MD)
• Suitable for: FC-6800
• Bolt Circle: 110mm
• Gear arms: 4-arm
• Gradation: Type MD (for 53-39T), MA (for 50-34T), MB (for 52-36T)

Material

• Aluminium / Glass fiber reinforced plastic

Color

• grey

Weight

• 116g