PRI 2018: PFC Brakes New V3 Two-Piece Rotor System And ZR24 Caliper

We stopped by the PFC Brakes booth to get a better look at the V3 floating rotor assembly. Floating rotors are nothing new in racing, but the installation and assembly of PFC Brakes’ V3 rotor is pretty incredible for the dirt track market. We cornered Chris Dilbeck, PFC’s short track guru, for a personal demonstration on their patented V3 two-piece rotor system.

PFC Brakes' V3 two-piece rotor is comprised of three major components. First is a snap ring that holds the rotor securely to the rotor hat. The disassembly is shown here.

Watching Dilbeck install and remove the rotor in less than 10 seconds several times-in-a-row told us how simple but complex this kit really is. There are only three pieces: A rotor hat, the rotor, and a snap ring. There is no hardware! No bolts that attach the rotor to the hat, therefore … no wrenches needed.

The rotor hat is machined with flange pockets that are designed to allow flanges on the rotor to mate perfectly and grooved to allow the snap ring to hold the components together.

The rotor is machined with flanges that mate with flange pockets on the rotor hat. There are grooves in both that allow for the snap ring to secure the two components together. The concept is simple but the machine work is very complex and genius.

Assembly is amazingly quick.

In using the two-piece rotor system this way, there is reduced heat transfer from the calipers to the hub assembly. A reduction in thermal transfer also equates to less chance for thermal distortion and warping. These are major considerations in short track racing.

The unit obviously has even less weight due to the lack of hardware. Like most two-piece rotor systems, the hat is reusable, which lowers maintenance costs. Dilbeck also tells us there is no rattle because of the snap ring’s design.

For Super Late Models, Crate Models, Modifieds, and Big-Block Modifieds, Dilbeck recommends the ZR24 caliper that is built with strength for robust braking with less risk of damage or failure.

For more information on the V3 two-piece rotor system or the ZR24 caliper, please visit them online at PFC Brakes.

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About the author

Bobby Kimbrough

Bobby grew up in the heart of Illinois, becoming an avid dirt track race fan which has developed into a life long passion. Taking a break from the Midwest dirt tracks to fight evil doers in the world, he completed a full 21 year career in the Marine Corps.
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