# Wilwood Caliper-GNX4 1.88in Pistons 1.00in Disc

GNX4 calipers are the product of Wilwood's in-house FEA design and 3-D modeling technology. With its unyielding strength and superior piston design, the GNX4 generates positive pedal response and high clamping efficiency with a substantial weight savings over comparable OE Calipers. Base model calipers feature a natural aluminum finish protected by a durable clear coat anodizing. Forged billet aluminum bodies, stainless steel pistons, and high-temperature seals put an end to the rust, bore pitting, and seal failures that plague many OE caliper design. Warning: Current GNX4 caliper assemblies are designed solely for use with DOT 5 fluids and should not be used with DOT 3, 4 or 5.1 fluids.

## Details

- **Price:** 974.36 CAD
- **Vendor:** Wilwood
- **Type:** Brake Calipers - Perf

## Variants

| Variant | Price | Available |
|---------|-------|-----------|
| Default Title | 974.36 CAD | In stock |

## Images

- Photo - Primary

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> Source: [Standard Auto Part](https://www.standardautopart.com/products/wilwood-caliper-gnx4-1-88in-pistons-1-00in-disc)
> Updated: 2026-08-18