absoluteBLACK Oval Chainring for Shimano Dura-Ace R9100 and Ultegra R8000

The absoluteBLACK oval chainring for Shimano Dura-Ace 9100 and Ultegra 8000 is made from CNC-machined 7075 aluminium. For those with a 4-bolt road crankset who want to replace the outer or inner chainring.

• Fits Dura-Ace 9100, Ultegra 8000 and 105 R7000, 4-bolt cranksets only
• CNC-machined 7075 aluminium with a thickness of 5mm, for greater strength
• Lightweight: 37 g for the 36T and 137 g for the 52T
• Ramps on the outer chainring for shifting with 52/36, 52/38, 53/39 and 50/34
• Choose 52 or 36 depending on the chainring you are replacing, BCD 110

Technical specifications

• Material: CNC-machined 7075 aluminium, Type II anodising
• Thickness: 5 mm
• Crankset compatibility: Shimano Dura-Ace 9100 (R9120, R9150, R9170 Di2), Ultegra 8000 (R8020, R8050, 8070 Di2), 105 R7000 (R7020, R7070); 4-bolt cranksets only
• Retrofit: Possible on 9000 and 6800 cranksets with bolt covers
• Standard: BCD 110 (110/4), 10/11-speed
• Weight: 36T: 37 g (±1 g); 52T: 137 g (±1 g)
• Ovality: 36T: 11.4%; 52T: 10-11.2%
• Ramp configuration: Ramps on the outer chainring for 50/34, 52/36, 52/38, 53/39 combinations
• Available options: 52, 36