01
Real experience
We test before we recommend.
PRODUCT DESCRIPTION
Product details
GNX4 Caliper
GNX4 calipers are the result of Wilwood’s in-house FEA design and 3D modeling technology. With unwavering strength and a superior piston design, the GNX4 delivers precise pedal response and high clamping efficiency with a substantial weight savings over OE calipers. Base model calipers feature a natural aluminum finish protected by a durable clear anodize. Forged aluminum bodies, stainless steel pistons, and high-temp seals eliminate the corrosion, internal bore corrosion, and seal failure that plagues many OE caliper designs. Warning: Current GNX4 Caliper Assemblies are designed exclusively for use with DOT 5 fluids and should not be used with DOT 3, 4, or 5.1 fluids. The spring action of the SRS plates also dampens noise by eliminating pad rattle and dampening harmonic squeal.
Rotor Dimensions
| Rotor Width (in) | 1.00 |
| Rotor Diameter (in) | 13.06 |
Pad Dimensions
| Pad Area (in²) | 11.15 |
| Pad Volume (in³) | 4.07 |
Service Rating & Material
| Material | Forged Aluminum |
| Weight (lbs) | 7.7 |
Colors and Finish
| Color | Red |
| Finish | Red Powder Coat |
Mounting
| Mounting Center (in) | 7.00 |
| Mounting Position | |
| Mounting Side | Universal |
| Mounting Type | Lug |
Specifications
Rotor Compatibility
| Rotor Width (in) | 1.00 |
| Maximum Rotor Width (in) | 1.00 |
| Minimum Rotor Width (in) | 0.88 |
| Maximum Rotor Diameter (in) | 13.06 |
| Minimum Rotor Diameter (in) | 11.75 |
Brake Pad Specifications
| Brake Pad Type 1 | 9115 |
| Brake Pad Type 2 | N-A |
| Brake Pad Type 3 | N-A |
| Total Pad Area (in²) | 11.15 |
| Total Pad Volume (in³) | 4.07 |
| Mount |
Piston Specifications
| Piston Bore 1 (in) | 1.88 |
| Piston Bore 2 (in) | 1.88 |
| Piston Bore 3 (in) | |
| Total Piston Area (in²) | 5.56 |
Mounting Specifications
| Mount Side | Universal |
| Mounting Center (in) | 7.00 |
| Mount Hole Size (in) | 0.45 |
| Mount Height (in) | 2.41 |
| Inlet Thread Size | 1/8-27 NPT |
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Shipping to Spain and Europe, in 5-7 days.
Experts by your side
Over 10 years in the automotive world.
Verified parts
Each reference designed for competition.
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WHY THETUNERLAB
We don't just sell parts. We live drift.
We have spent years building cars, racing, and testing the exact same parts that we sell.
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