Originally Posted by
dynaryder
Instead of swapping the entire crankset,just swap the small ring. Replace the 30t with a 26t.
What is the smallest ring that you can run on that 105 crankset ? What is the spacing on your bolt pattern ?
The mtn crank will def get you as low as you want to go.....just not sure on the 105 set you have......
Nor do I know the max capacity of his rear derailleur.....also a relevant point for either option....
Probably need a long cage.....