Description
Product Overview
The Wilwood 120-5456 PS-1 brake caliper is a high‑performance component designed specifically for front left brake applications. Engineered with a 1.00 inch piston and a .20 inch rotor, this caliper delivers precise hydraulic pressure and rapid response, ensuring that the braking system engages smoothly and consistently. Constructed from a durable, painted alloy, the caliper resists corrosion and wear even under the most demanding driving conditions. The design incorporates Wilwood’s advanced computer‑aided design (CAD) and finite element analysis (FEA) processes, guaranteeing optimal strength‑to‑weight ratios and superior heat dissipation. With a compact footprint, the PS‑1 fits a wide range of vehicle platforms while maintaining the high‑quality standards that Wilwood is known for. The component is fully compatible with standard brake lines and pads, making it a straightforward upgrade for enthusiasts seeking reliable performance without extensive modifications.
![[Product front view showing all components]](https://www.globalspark.store/wp-content/uploads/2026/07/27f838ac5cde44618ca04c5ca78fe7a9.jpg)
Usage
This brake caliper excels in both street and track environments. Whether you are upgrading a daily driver, a classic car, or a dedicated race car, the PS‑1 provides the stopping power needed for confident handling. Its front left positioning makes it ideal for vehicles with asymmetric brake setups, allowing for fine‑tuned balance across the axle. The caliper’s robust construction tolerates high temperatures generated during aggressive braking, making it suitable for spirited driving, autocross events, and occasional track days. Installation is straightforward: the caliper bolts directly to the existing mounting bracket, and the piston aligns with standard brake hose fittings. After installation, the system requires a simple bleed procedure to remove air from the hydraulic line, after which the caliper is ready for immediate use. Drivers will notice improved pedal feel and reduced brake fade, especially during prolonged or repeated braking scenarios.
Why Choose Us
Choosing the Wilwood 120-5456 PS‑1 means selecting a product backed by decades of engineering expertise and a reputation for reliability. Wilwood’s engineering team utilizes state‑of‑the‑art simulation tools and real‑world testing to validate every component, ensuring that each caliper meets rigorous performance criteria before it reaches the customer. The PS‑1 benefits from a painted finish that not only enhances aesthetic appeal but also provides an additional layer of protection against rust and environmental contaminants. Our quality assurance process includes multiple inspection stages, from dimensional checks to functional testing on a dynamometer, guaranteeing that each unit performs to specification. In addition, Wilwood offers comprehensive technical support and a responsive after‑sales service team ready to assist with installation questions, part compatibility, and warranty claims. This commitment to customer satisfaction sets Wilwood apart from generic aftermarket alternatives.
Key Features
- Precision‑engineered 1.00 inch piston delivers consistent hydraulic force for reliable braking.
- .20 inch rotor compatibility ensures optimal pad contact and heat dissipation.
- Durable painted alloy construction resists corrosion and extends service life.
- Compact design fits a wide range of front left brake assemblies without modification.
- Wilwood technical support and warranty provide peace of mind and easy assistance.
FAQ
What vehicles are compatible with the Wilwood 120-5456 PS‑1 caliper?
The PS‑1 is designed for front left brake applications and fits most vehicles that use a standard 1.00 inch piston and .20 inch rotor. It is commonly used on performance street cars, classic restorations, and race‑prepared machines. Always verify mounting bracket dimensions and brake line fittings for exact fitment.
How does the painted finish affect performance?
The painted finish provides a protective barrier against moisture, road salts, and UV exposure, reducing the risk of rust and surface degradation. It does not interfere with heat transfer; the underlying alloy still dissipates heat efficiently during heavy braking.
Is any special tooling required for installation?
No special tools are required beyond standard automotive hand tools. The caliper bolts directly to the existing mounting bracket, and the piston aligns with conventional brake hose fittings. A basic brake bleed is recommended after installation to remove any trapped air.
What warranty does Wilwood offer on this caliper?
Wilwood provides a limited warranty that covers manufacturing defects for a specified period from the date of purchase. Details can be found in the warranty documentation included with the product or on the official Wilwood website.
Can I use this caliper with aftermarket brake pads?
Yes, the PS‑1 is compatible with most aftermarket brake pads that meet the standard dimensions for a .20 inch rotor. Selecting high‑performance pads can further enhance braking response and durability.




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