Wilwood ST FNSL6R Caliper 1.38/1.12/1.12 1.1

This is the Wilwood ST FNSL6R brake caliper, part number 120-16053. It's a high-performance caliper designed for custom brake system builds where maximum stopping power and control are needed. The FNSL6R model features a six-piston configuration, with piston sizes of 1.38 inches for the outer pistons and 1.12 inches for the inner pistons, paired with a 1.10-inch rotor offset. This arrangement is engineered to provide a strong, balanced clamping force across the rotor surface, which is crucial for consistent braking performance under demanding conditions.

Constructed from forged aluminum, this caliper is both strong and lightweight, helping to reduce unsprung weight which can improve overall vehicle handling. The caliper body is finished with an anodized coating, offering good resistance to corrosion and wear, while also giving it a distinctive look. The ST designation indicates a specific series within Wilwood's lineup, often associated with their track-focused or performance-oriented offerings. This caliper is designed to work with rotors that have a 1.10-inch offset, a detail important for ensuring proper fitment within your custom wheel and brake setup.

When building a custom brake system, selecting calipers that can handle the heat and stress is paramount. The Wilwood ST FNSL6R caliper is a well-built component that offers a significant upgrade over many stock calipers. It's important to note that this is a performance caliper and may require custom brackets, brake lines, and potentially modifications to your existing brake system for installation. Always consult the manufacturer's detailed installation guide and ensure compatibility with your specific wheel and rotor combination before proceeding with your build.