STONE 110bcd Chainring for Road Bike 4mm Inner Offset 11S 12S R7100 R8100 R9200
£52.20
105 R7100, Ultegra R8100, Dura-Ace R9200. The 4mm inner offset will make your chain and chainline centered to the rear cassette flywheel. Narrow wide tooth, it design for 1x speed only, can not use as 2x speed, not support front shifting derailleur.
