Blood Red Road (Dustlands #1) by Moira Young

Saba has spent her whole life in Silverlake, a dried-up wasteland ravaged by constant sandstorms. The Wrecker civilization has long been destroyed, leaving only landfills for Saba and her family to scavenge from. That's fine by her, as long as her beloved twin brother Lugh is around. But when a monster sandstorm arrives, along with four cloaked horsemen, Saba's world is shattered. Lugh is captured, and Saba embarks on an epic quest to get him back.

Suddenly thrown into the lawless, ugly reality of the world outside of desolate Silverlake, Saba is lost without Lugh to guide her. So perhaps the most surprising thing of all is what Saba learns about herself: she's a fierce fighter, an unbeatable survivor, and a cunning opponent. And she has the power to take down a corrupt society from the inside. Teamed up with a handsome daredevil named Jack and a gang of girl revolutionaries called the Free Hawks, Saba stages a showdown that will change the course of her own civilization.
Blood Red Road has a searing pace, a poetically minimal writing style, violent action, and an epic love story. Moira Young is one of the most promising and startling new voices in teen fiction.

In a lawless future land, where life is cheap and survival is hard, Saba has been brought up in isolated Silverlake. She never sees the dangers of the destructive society outside. When her twin brother is snatched by mysterious black-robed riders, she sets outon an epic quest to rescue him. The story's searing pace, its spare style, the excitement of its fabulously damaged world, its unforgettably vivid characters, its violent action and glorious lovestory make this a truly sensational YA debut novel.

Same book, different covers and almost different blurb.