I made one myself with a plastic ginger beer bottle cut down to the right width and overlapped twice, it's still in the bike and does the job perfectly. The sleeves are impossible to find in London and i only found one website that sold them, everyone else just told me buy a new bottom bracket to get one!
I made one myself with a plastic ginger beer bottle cut down to the right width and overlapped twice, it's still in the bike and does the job perfectly. The sleeves are impossible to find in London and i only found one website that sold them, everyone else just told me buy a new bottom bracket to get one!