yeyouc 16x2.125 replacement butyl inner tube, 16 inch bike tube with cr202 bent valve stem compatible with most 16x1.75 16x1.95 16x1.75/2.125 electric bicycle bike motorcycle and most kids bikes 2pcs is up for auction in Automotive. The current bid is $2.00, 86% below the $13.99 MSRP, in Good Condition. This auction has ended — similar items appear in live auctions regularly.