The tiered sale stays open all weekend. It closes Sunday night, midnight MT.

Same mechanic as the rest of the run. The more of your drivetrain you fix in one go, the deeper the cut. After Sunday it goes back to regular price.

If the cart has been sitting open all week, you have until Sunday night to put it through. The bearings you have been hearing all spring are not going to quiet down on their own, and the watts a worn pulley is eating do not come back until something better goes in. Whatever you skip this weekend is something you will be paying full price for in July, with the same drivetrain noise underneath it.

A bottom bracket and a Kolossos cage cover most of the loss. Add pulleys if you have been chasing the upgrade since spring. Put it together in one order before Sunday midnight, ride a quieter setup for the rest of the year, and stop thinking about it. No further extensions after Sunday.