S
Sedentary Virtuoso
Guest
Why does my bike chain keep popping up and re-seating on the lowest (smallest) gear on my rear wheel? All other gears are fine. Light pedaling is fine, but under heavy pedaling it pops with every hard push.
Trek Navigator with Shimano Alivio - Bike is only 4 months old.
Trek Navigator with Shimano Alivio - Bike is only 4 months old.