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Discussion Starter · #1 ·
Howdy everyone,

I have a used Trek 1.2 and cannot tell if the RD is ss or gs.
I’ve attached photos of it and stamped on the back is “Shimano RD-3500” , Thanks for helping a newb.
Wheel Bicycle Bicycles--Equipment and supplies Bicycle frame Crankset

Wheel Bicycle Bicycles--Equipment and supplies Bicycle frame Crankset

Automotive tire Motor vehicle Tire Bicycle tire Crankset

Bicycle Wheel Bicycle wheel rim Bicycles--Equipment and supplies Bicycle frame
 
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