Girodisc Rotors - Cayman 981S
Girodisc Rotors - Cayman 981S
Category: Brakes
Price: $1000
Private or Vendor Listing: Private Listing
Part fits: Porsche Boxter/Cayman
Location (State): CA
Item Condition: Used
Shipping Information: Item can be shipped
The Girodisc system is a direct replacement for the OE disc with the addition of our provided caliper space. The rotors are slightly larger than the OEM rotor at 350mm versus 330mm (front) and 325mm vs 298mm (rear) providing greater braking force and cooling capacity.
The central hat section of our rotor is made from strictly U.S. sourced 6061-T6 aircraft specification aluminum. The disc is made from our own proprietary cast iron, poured in the USA and machined from start to finish in house at Girodisc. The rotor utilizes a curved vane design, developed in racing to act as a centrifugal pump to force cooling air through the disc.
The rotor and hat have a floating mount system, which utilizes 10 high strength alloy steel drive pins, manufactured by Girodisc in the USA to our own specifications and cadmium plated for a long lasting corrosion resistance. These pins take the load from braking actions while maintaining the axial and radial float between the hat and disc. The pins are secured by class 12.9 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. This float also allows the rotor to self center between the pads.
Once the Girodisc system is in place, simply replace the cast iron rotor when needed.
These rotors were on a 2014 Cayman 981S for just a few thousand miles and a couple of DE sessions. The wear is negligible. I measured the fronts at approx. 28.4mm and the rears at approx. 20mm. Very close to the thickness when brand new. All four (4) rotors are in excellent condition; no scoring, cracking, etc. The rotors include the Girodisc spacers and longer bolts that accompanied them. Installation is quick and easy.
They are in Girodisc boxes and contain all the literature supplied. I prefer a local sale (near LAX) as shipping them can be costly (weight).
Girodisc direct prices are $1,200 (front set) and $1,100 (rear set).
Asking price is $
PM me if you have any questions.
Last edited by AP 997S; Sep 19, 2020 at 12:27 PM.
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Al Norton
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