FC-R9200 Dura Ace 12 speed outer chainring, 54T-NJ for 54/40T 29er Universal attachment with silicone rubber

Universal attachment with silicone rubber

a stout chromoly spindle and sealed cartridge bearings

and ultra-elastic cuff inserts create a seal around the wrists or gloves

• Multiple Transportable Carbohydrates

FC-R9200 Dura Ace 12 speed outer chainring, 54T-NJ for 54/40T 29er Universal attachment with silicone rubberThe Shimano Dura Ace FC R9200 12 speed chainrings are the perfect replacement for worn or damaged chainrings HOLLOWGLIDE hollow outer chainring technology, giving vast improvements in rigidity and increased weight savings, whilst also removing outer chainring flex, hugely improving shift performance making it precise even under high load The teeth have been developed to work only in conjunction with 12 speed chains for improved contact providing more