It comes with a brand new set of pre-installed brake pads, you could use it immediately. Quality assurance: RUTU offer 1 year warranty for any quality related issues. Please feel free to contact us if any problems. Please note: calipers on front and rear position are with opposit mounting direction, please do compare the photo before purchase. Brand new disc brake caliper w/ a set of fresh brake pads for Pep Boy Mini Baja Doodle Bug, Racer, Dirt Bug, Blitz 97cc 2.8HP Mini Bike It comes with a brand new set of pre-installed brake pads, you could use it immediately. Rear Brake Caliper for: Pep Boy Mini Baja Doodle Bug DB30 DB30S DB30R 97cc 2.8HP Mini Bike Pep Boy Mini Baja Blitz, Racer, Dirt Bug 2.8HP Mini Bike