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Continue to ChatInner Tube - 90/100-16 (3.25-16) - 40D2180 - PBC3389F1 - https://www.giovanni-bikes.com/express-parts-catalog/tires-rims-tubes/inner-tube-90-100-16-3-25-16-40d2180-pbc3389f1
Inner Tube - 90/100-16 (3.25-16) - 40D2180 - PBC3389F1 - https://www.giovanni-bikes.com/express-parts-catalog/tires-rims-tubes/inner-tube-90-100-16-3-25-16-40d2180-pbc3389f1