you might find it cheaper to buy one from them and ask them to fit it. they wouldnt charge you to remove the old one unless they were really mean.
@coppiThat started
London Fixed Gear and Single-Speed is a community of predominantly fixed gear and single-speed cyclists in and around London, UK.
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you might find it cheaper to buy one from them and ask them to fit it. they wouldnt charge you to remove the old one unless they were really mean.