APM Racing Two-Piece Directional Brake Disc, Pioneer Appradio and More - Mod Gear Get your ride back in line this fall with some new hotness! MotorTrend Staff Writer Sep 05, 2011 ...

We give you our 9 favorite Disc Brake Conversion Kits for your hot rod from brands ... The result is some very impressive hardware featuring 11-inch two-piece rotors and aluminum four-piston ...

The first disc brake rotors were one-piece castings somewhat similar to the one-piece rotors specified on most cars and trucks, and many aftermarket applications today.

This combination of a solid cast-iron disc and a steel center section saves weight (versus a single-piece cast-iron design) and cost (versus the two-piece design that follows).

Two-Piece Brake Rotors. There are two main reasons for choosing a two-piece rotor over a standard one-piece. ... You'll see the scratches develop as you use the sanding disc.

2-piston calipers use two brake pads and two pistons, one of each on either side of the disc. This gives you slightly better initial bite and brake feel, since both pads come into contact with the ...