REVIEWS GIRODISC TWO-PIECE ROTORS:
The GiroDisc Two-Piece Rotor Story Of Knowledge & Ingredients
The GiroDisc 2-piece brake rotor system is a direct replacement for the OE (Original Equipment) brake disc.
The GiroDisc Rotors bolt straight on with the benefit of being lighter and quicker to respond than heavier original rotors. Your factory brake-bias and ABS is maintained and yes, the GiroRotors are compatible with OE calipers.
Designed and built in America by former Boeing engineers, the GiroDisc 2-piece rotors have a center hat section that is made from strictly U.S. sourced 6061-T6 aircraft specified billet aluminum for superb strength to withstand the rigors of racing.
The specialized cast iron rotor integrates an internal curved-vane design, developed in racing, to perform as a rotating centrifugal pump to force cooling air through the disc to keep brake operating temperatures within an optimum range.
The specialized disc is made from GiroDiscs' own proprietary cast iron which is poured and cast in the U.S., where the brake rotors are then machined, start to finish, in-house at GiroDisc.
The rotors and hats have a floating mount system to allow the rotor to self center between the pads for quicker response. Coupled using high strength alloy steel drive-pins produced by in-house GiroDisc, they are also cadmium plated for long lasting corrosion resistance.
The drive-pins take the load from braking actions while maintaining the axial and radial float between the hat and disc. The pins are secured by Grade-12 cap screws with hardened washers.
In order to keep the rotors from making noise when cold, the pins are mounted with anti-noise spring washers on the rotor side which allow the rotor to grow with heat expansion but eliminate the rattle and noise associated with floating rotors.
We'll often hear the comment from vehicle owners that the GiroDisc rotors are less money than factory rotors purchased through a new car dealership such as Audi, BMW, McLaren, Mercedes/AMG, Nissan, Ferrari, Porsche and Lamborghini.
You'll find GiroDisc 2-piece rotors on profession cup racing vehicles used by teams running Porsche to Ferrari and Ford GTs.
Money well spent? Racers know that GiroDisc rotors have less rotating mass (typically 6- 8 lbs per rotor) which allow vehicles to accelerate quicker and stop shorter.
Same money spent on power/engine modifications typically do not produce equivalent performance gains. So when performance gains are considered in the budget, money spent on GiroDisc rotors is money well spent.