Hi all, I have been riding Trek 3900 disc for the last 1 year and for the last few days I found the chain got stretched. A local mechanic told me to change the chain and as cassette is not available at this moment in my place I am running with old cassette and new chain.
Now, my bike is running very good at gear 7 and 8, but it slips at gear 3-6.
Any alternative should I follow to make it perfect?
Now, my bike is running very good at gear 7 and 8, but it slips at gear 3-6.
Any alternative should I follow to make it perfect?