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Continue to ChatSprocket - Front, 15 Tooth, 420 Chain, 17mm Hole - 20A1520 - PBC3259F1 - https://www.giobikes.net/express-parts-catalog/sprockets/sprocket-front-15-tooth-420-chain-17mm-hole-20a1520-pbc3259f1
Sprocket - Front, 15 Tooth, 420 Chain, 17mm Hole - 20A1520 - PBC3259F1 - https://www.giobikes.net/express-parts-catalog/sprockets/sprocket-front-15-tooth-420-chain-17mm-hole-20a1520-pbc3259f1