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Just got a Haro Mary SS and i want to change the cog to an 18t.
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C spanner and a chainwhip will sort that.
Thanks
Looks like an xtr chainring bolt thing. That or an old style square taper bb. A tool to do those would do it.
Something like this - http://www.chainreactioncycles.com/Models.aspx?ModelID=74219
Are there 8 slots in it by any chance?
No. There are 6 slots.
Brass chisel and a small hammer to loosen the lockring.
Look carefully for which way it is threaded.
Fixed sprockets used a left-hand-thread on one component to tighten as you rode it.
PaulD
Its not fixed. Its a freewheel. Think ive found the right tool.
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