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Discussion Starter · #1 ·
A new can of worms with ISIS,but I consider myself a light rider{good with a wrench}.
Have a new FSA carbon crankset and looking at buying the American Classic BB with replaceabls bearings.
Got a new 113mm BB last year, no proplems until lately. Now I read Stumpys have a 50mm chainline not the typical 47.5 chainline.
Do I need the 118 mm for proper chainline?
I get flutter on the lower jockey wheel and always get chain suck with a slightly dirty new chain. Chainrings are`nt that worn.
This has me thinking 118mm.

For the $300 should I go XTR? Is this FSA , Am Classic project a bad idea?
Dan, Colorado. 04 stumpjumper
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