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Girodiscs A1-171 Lightweight 2-piece Rotor System is a direct replacement for OEM brake discs. Girodisc rotors bolt directly to the car and work with OE calipers. Upgrading your brakes with lightweight high performance replacements maintains the factory brake bias as well as the ABS efficiency. Girodisc A1-171 rotors weigh 20.3 lbs ea vs. 23.8 lbs ea for the stock units. This reduction in rotational and unsprung weight allows for quicker acceleration and suspension response. 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 drive pins. 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 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. This float also allows the rotor to self center between the pads.
Once the rotors are worn to the minimum thickness specification, the rotor ring can be replaced separately from the hat at a reduced cost.
Girodisc A1-171 Brake Disc Vehicle Fitment:
2015-2020 Audi S3
2015-2020 VW Golf R
2015-2020 VW GTI PP
Rotor Specifications:
Weight: 9.21Kg
Girodisc Brake Rotor Manufacturing:
The central hat section of the Girodisc rotor is made from strictly U.S. sourced 6061-T6 aircraft specification aluminum. The disc is made from Girodiscs own proprietary cast iron, poured in the USA and machined from start to finish in house at Girodisc. 10 high strength cadmium plated alloy steel drive pins along with grade 12 cap screws and hardened washers are used to attach the rotor to the hat.
Girodisc Rotor Installation:
Brake rotor installation typically takes about 30 minutes per rotor. Basic hand tools are necessary for installation. Please observe all safety precautions and follow proper installation guidelines while working on your vehicle.
Sold/priced per pair.
HPA branded products carry a one year warranty against manufacturer's defects on all major, non-consumable, components. Damaged caused by incorrect installation, wear and tear, abuse, misuse, racing, collision, foreign particles, etc., will NOT be covered by warranty.
Warranty is offered to original purchaser only and is not transferable.
HPA Motorsports will not be liable for incidental, consequential, indirect, special, or punitive damages of any kind. HPA’s entire liability shall be limited to replacement or repair of the damaged parts at HPA’s option.
Labour and freight costs associated with warranty repair or replacement are NOT covered.
To maintain validity of warranty, factory recommended maintenance schedule and manufacturer’s Technical Service Bulletins (TSB’s) must be adhered to and documented.
In addition to the above, the HPA FT/FTX series Turbo packages for VR6 motors have the following conditions:
Components covered by warranty include:
- Turbochargers
- Exhaust Manifold
- Downpipe
- Catalysts
- Exhaust System
- Intake Manifold
- Silicone Plumbing
- Intercoolers
- Fuel Pump
- Fuel Injectors
- Brake Calipers
- Haldex Controller
Components NOT covered by warranty include:
- Clutch
- Gearbox
- Brake Pads & Brake Rotors
Any claims of defect in workmanship must be repaired at HPA Motorsports' facility located in Langley, Canada. Should the damage be determined to be a direct result of the workmanship of HPA Motorsports, labor costs for HPA Motorsports to complete repairs at our own facility will be included in the warranty repair. In certain circumstances, at the sole discretion of HPA Motorsports, permission may be granted for repairs to be completed at an HPA authorized facility at a pre-approved labor rate.
HPA Motorsports will not be liable for incidental, consequential, indirect, special, or punitive damages of any kind. HPA’s entire liability shall be limited to replacement or repair of the damaged parts at HPA’s option.
To maintain validity of warranty, in addition to the factory recommended maintenance schedule, the following services must be adhered to and documented according to the prescribed schedule:
| Break In period: engine speed is not to exceed 5500 RPM, and absolutely NO standing starts are to be performed | 1000 km / 620 miles |
| Mass Air Flow meter – Clean | 5000 km / 3100 miles |
| Mass Air Flow meter – Replace | 20,000 km / 12,500 miles |
| Engine Oil (Motul Xcess / 8100 5w40) & Filter – Replace | 5000 km / 3100 miles |
| Haldex Fluid & Filter – Replace | 10,000 km / 6000 miles |
Any claims of defect in workmanship must be repaired at HPA Motorsports' facility located in Langley, BC Canada. Should the damage be determined to be a direct result of the workmanship of HPA Motorsports, labor costs for HPA Motorsports to complete repairs at our own facility will be included in the warranty repair.
For remote customers, in certain circumstances, at the sole discretion of HPA Motorsports, permission may be granted for repairs to be completed at an HPA authorized facility at a pre-approved labor rate.
Should you experience any issues with your items, please contact HPA Motorsports for technical assistance using the form below or by calling 604-888-7274 prior to engaging in any repair procedure. Failure to follow the advice of our technical support staff may cause undue harm that will not be covered by warranty.