USED CANNONDALE SYNAPSE CARBON 4 RIVAL 51 '14. Each used bike we take in at the Trek Bicycle Superstore goes through a 40 point inspection before it is put on sale. They come with our 30 day test ride guarantee, which at time during that 30 days you can return it for credit towards another bike with us. You will get 30 days of free adjustments along with with a free GURU fitting at our North County location if picked up in store. Bikes being shipped out will have an extra shipping charge of $125.00. If you have any specific question about the bike please feel free to contact our North County location where all of our used bikes are displayed for sale.