What is the purpose of the staggered piston sizes in this caliper?

The staggered piston sizes, with a larger 1.75-inch primary piston and two 1.25-inch secondary pistons, are designed to optimize brake pad wear and provide a more balanced and responsive pedal feel. This arrangement helps ensure consistent clamping force across the brake pad surface.

What does the 'ST' designation mean for this Wilwood caliper?

The 'ST' designation typically refers to a specific performance-oriented design within Wilwood's product lines. It indicates that this caliper is engineered for enhanced braking performance, often featuring updated internal valving or piston configurations compared to standard models.

Does this caliper come with brake pads or mounting hardware?

This product listing is for the Wilwood ST FNSL6R caliper itself. Brake pads and necessary mounting hardware, such as caliper brackets, are typically sold separately and should be confirmed for compatibility with this specific caliper model and your vehicle's brake system.

Wilwood ST FNSL6R Caliper 1.75/1.25/1.25 1.25

Name: Wilwood ST FNSL6R Caliper 1.75/1.25/1.25 1.25
Brand: Wilwood
SKU: wilwood-wilwood-st-fnsl6r-caliper-1-75-1-25-1-25-1-25-t14-582104
Price: 681.06 USD
Availability: BackOrder

$681.06

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Wilwood ST FNSL6R Caliper 1.75/1.25/1.25 1.25

Key Features

Fits Wilwood ST FNSL6R Caliper 1.75/1.25/1.25 1.25
Features staggered piston bores: 1.75-inch primary and two 1.25-inch secondary.
Designed for rotors with a 1.25-inch offset.
Constructed from durable aluminum for strength and reduced weight.
Anodized finish provides corrosion resistance and a clean look.
Radial mount design for secure attachment.

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Product Details

This is the Wilwood ST FNSL6R brake caliper, part number 120-15776. It's a high-performance caliper designed for serious braking upgrades. This caliper features a unique staggered piston arrangement with bores of 1.75 inches for the primary piston and two 1.25-inch pistons for secondary clamping force, all working together to provide exceptional stopping power and feel. The ST designation indicates a specific design focus for enhanced performance, and the FNSL6R model is known for its robust construction and reliable operation under demanding conditions.

Constructed from well-built aluminum, this caliper is both strong and lightweight, helping to reduce unsprung mass which can improve overall vehicle handling. The anodized finish not only looks sharp but also offers a layer of protection against corrosion and wear. It's designed to work with rotors that have a 1.25-inch offset, a detail crucial for proper fitment within your braking system. The caliper utilizes a radial mount design, common in performance applications, ensuring a solid connection to the caliper bracket. This caliper is intended for the right-hand side of the vehicle.

When considering a brake upgrade of this caliber, it's important to ensure compatibility with your existing or planned brake system components, including rotors, pads, and brake lines. Wilwood is a well-known name in the performance braking industry, and this caliper represents their commitment to providing advanced braking solutions for vehicles where stopping performance is a top priority. Proper installation by a qualified technician is recommended to achieve optimal performance and safety.