Avid BB7 front and rear disc brakes for less than half price! Avid BB7
mountain bike disc brakes are regularly rated as some of the best brakes you can buy. I have the same set on my xc bike and they are awesome. Every component on every one of my bikes is Shimano, Avid BB7 disc brakes are the only expecting, they are that good! See specs below:

Product Details:
Condition:              Brand New
Color:                    Black
Product location:    China
Material:                Stainless steel & Aluminum Ally
 
Features:
Mechanical Cable Pull Type
16 bolts & 2 stainless steel G2 160 mm rotors
2 aluminum ally calipers
Avid original brake pads