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Continue to ChatSprocket - Rear, 428 Chain, 41 Tooth - 20A1145 - PBC3231F1 - https://www.giovanni-bikes.com/express-parts-catalog/sprockets/sprocket-rear-428-chain-41-tooth-20a1145-pbc3231f1
Sprocket - Rear, 428 Chain, 41 Tooth - 20A1145 - PBC3231F1 - https://www.giovanni-bikes.com/express-parts-catalog/sprockets/sprocket-rear-428-chain-41-tooth-20a1145-pbc3231f1