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Stop Harder, Tow Safer: Big Brake Performance for GT-R
The ALCBKR6959B05 is a big brake kit engineered by Alcon for 2009-2021 Nissan GT-R. This kit pairs a 4-piston caliper with a 380mm rotor measuring 33mm thick, delivering increased thermal capacity and reduced brake fade compared to stock hardware. Alcon builds every caliper from ductile iron with an epoxy acrylic finish over an acid zinc base for long term corrosion resistance, and every seal is rated for extreme motorsport temperatures.
Key Features
- 4-piston Sky Blue caliper for increased clamping force
- 380mm x 33mm rotor for greater thermal mass
- Ductile iron caliper housing with epoxy acrylic corrosion protection
- High temperature seals rated for motorsport level heat
- Compatible with stock master cylinder and ABS system
- Designed to clear most OE and aftermarket wheel packages
Fitment
| Year Range | Make | Model |
|---|---|---|
| 2009-2021 | Nissan | GT-R |
Specifications
| Detail | Value |
|---|---|
| Rotor Diameter | 380mm |
| Rotor Thickness | 33mm |
| Piston Count | 4 |
| Caliper Type | RC4 |
| Caliper Color | Sky Blue |
| UPC | N/A |
What's Included
- Rear axle 4-piston RC4 calipers - sky blue
- 380x33mm floating rotors
- Mounting hardware
About Alcon
Alcon has engineered braking systems for over four decades, supplying motorsport teams from grassroots racing to top tier international competition. Every road going Alcon kit is derived directly from that racing experience, using the same seal materials, caliper alloys, and rotor metallurgy proven under sustained track loads. The result is a braking system built to perform consistently whether towing, off roading, or lapping a circuit.
Related Parts
- Alcon Nissan R35 GT-R Gen 2 Front Left 390X32.8mm Rotor Ring Kit (ALCDKF2222X758C24L)
- Alcon Nissan R35 GT-R Gen 2 Front Right 390X32.8mm Rotor Ring Kit (ALCDKF2222X758C24R)
- Alcon Nissan R35 GTR Gen 1/2 Rear Left 380X30mm Rotor Ring Kit (ALCDKR2175X757C24L)
- Alcon Nissan R35 GTR Gen 1/2 Rear Right 380X30mm Rotor Ring Kit (ALCDKR2175X757C24R)
- Alcon 2009+ Nissan GT-R R35 412x36mm Rotor Grey 6 Piston Caliper RC6 Front Axle Kit (ALCBKF7059ZG04)
FAQ
What is the ALCBKR6959B05?The ALCBKR6959B05 is an Alcon big brake kit built for 2009-2021 Nissan GT-R. It is designed as a direct fit upgrade or replacement part using Alcon's motorsport engineering.
Does this part come with a warranty?Yes, Alcon backs this part with a 12 month, 12,000 mile warranty against factory defects and material issues.
Will this fit my vehicle if it has aftermarket wheels?Most 17 inch and larger aftermarket wheels clear this application, but wheel fitment should always be confirmed against the manufacturer's wheel template before ordering.
Is professional installation required?Alcon recommends installation by a qualified technician familiar with brake system service, as proper torque specs and bedding procedures are critical to safe operation.
Does this part work with the factory master cylinder and ABS system?Yes, this part is designed to work with the stock master cylinder and ABS system with no additional modification required.
What is included in the box?The kit includes calipers, rotors, mounting brackets, and hardware. Some kits include pre-installed brake pads.
Will I need new brake pads over time?Yes, brake pads are a wear item. Alcon offers direct fit replacement pad sets for this caliper platform.
Where is this part manufactured?Alcon parts are engineered and manufactured to motorsport standards with quality control derived from decades of racing supply experience.
Install Instructions
- Raise and safely support the vehicle, then remove the wheel on the side being serviced.
- Remove the factory or existing caliper, rotor, and bracket per the vehicle service manual.
- Install the Alcon bracket and torque all fasteners to the manufacturer specified values.
- Mount the new rotor and caliper assembly, confirming clearance around the wheel and suspension.
- Connect and bleed the brake lines if the caliper or lines were disturbed during installation.
- Reinstall the wheel and torque to the vehicle manufacturer's specification.
- Perform several low speed brake applications to seat the pads before normal driving.
- Recheck all fasteners and fluid level after a short test drive.
Prop 65 Warning
WARNING: This product can expose you to chemicals including lead, which is known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.
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