What are my options for getting lower gearing. My significant other's Fuji Cross 2.0 is new and I got a great deal on it at Performance bikes. The intended use is mostly for gravel roads in the Pacific Northwest's Cascade Range, translated "climbs". Is it possible to modify the rear drive train to get to a 32 tooth cassette?
Front Derailleur Shimano 105
Rear Derailleur Shimano Ultegra short cage
Shimano 105 11/28 10 speed Cassette
FSA Gossamer 50/34 Crank