I rarely get asked for these but have now managed to get some in stock for any owner looking for a new replacement - see http://www.totallyttrs.com/TTR250_sprockets.html
Brian
Exeter, Devon, UKhttp://www.ttr250.com - The one and only dedicated TTR250 FAQ!
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Blimey - can't see you'd want one unless going for the land speed record for TTRs......I find 13/48 still too tall a gear ratio
The customer gets what the customer wants