Navigate the blue Precursor rings was a mission that Jak and Daxter completed to obtain a power cell in The Precursor Legacy. While driving through Precursor Basin Jak beats a precursor ring race, after Daxter had told him to hurry and hit the next ring when they drove through the first one.
The PlayStation 3 and Vita versions of this mission are related to a trophy named "I Got The Blues", completing this mission will reward you with a bronze trophy.
A more difficult follow-up mission of Navigate the purple Precursor rings, this time you'll have to go through a series of blue Precursor rings. The ring can be found on the cliff path from where you get the power cell over the lake, instead of going right head left.
This one is more tricky than the last, there's at least two high ones where you need to jump up using a rock for the first one and a hill for the second. The rings also tend to be less straightforward and are often hidden a little to the sides making charging right ahead end up causing you to lose track of the rings.
Eventually you'll get back up the cliff path where you started, instead of going left head right for the final ring. You can pick up the power cell when it has been completed.