i need a 10 tooth lockring, does anyone have one or does anyone know of a manufactur of one, i know TNT had one but they are out of buis so if someone could help a bike buddy out here it would be appriciated
IIRC, the TNT 10-tooth replaced
the cassette lockring, making a 7-speed into a 8-speed, 8-speed into 9-speed, etc. I don't think a 10-tooth cog could be made to fit on a standard Shimano cassette body- not enough material would be left on the cog.
A truly demented alternative would be to install a Shimano Capreo rear hub, which has a 9 (yep, nine!) tooth small cog. It's designed for small-wheel travel bikes, but if you like 'em small...