Price at Evans Cycles: £47.99
The Dura Ace 9000 Inner Chainring from Shimano is a genuine Shimano replacement part. It uses a 4-arm design which is not only stiff but also lightweight and uses the same spider for both inner and outer chainrings. It is 11-Speed compatible and uses Hollowtech and Hollowglide technologies. Available in Black, inner chainring only.