Zeus ES-432 Four-Piston Front Brake Caliper – CNC Forged Aluminum Disc Brake Upgrade

Take your ride's stopping power to the next level with the Zeus ES-432 Large Radiation Four-Piston Brake Caliper. Engineered for cyclists and enthusiasts who demand track-grade braking performance, this front wheel disc brake caliper combines aerospace-grade aluminum construction with precision CNC machining for outstanding rigidity, heat management, and consistent braking feel — whether you're descending steep trails or navigating intense mountain terrain.

Made in Mainland China.

Key Features

1. CNC Fully Forged Aluminum Large Radiation Body

Crafted from integrated aviation-grade aluminum with full CNC cutting and forming, the ES-432 delivers exceptional rigidity with minimal flex under load. Available in Bright Silver, Black, and Purple baked paint finishes, the caliper's large radiation streamline slots feature a built-in air duct design to maximize heat dissipation during extended or aggressive riding sessions.

2. 34mm Large-Piston Opposed Four-Piston Structure

Each of the four pistons measures 34mm in diameter and applies pressure simultaneously for even, linear braking force across the rotor. The result is a smooth, progressive braking stroke — confident front control without abruptness and reliable rear force on high-speed descents, significantly reducing the risk of wheel lock-up or rear-end instability.

3. 100mm Standard Mounting Pitch – Wide Compatibility

The factory-standard 100mm bolt hole spacing ensures compatibility with a broad range of front fork adapters, making direct wheel modification straightforward without custom fabrication. Simply match your adapter bracket and bolt on.

4. Track-Grade Sintered Brake Pads Included

Pre-installed high-performance sintered brake pads withstand extreme heat and water immersion — ideal for continuous descents and intense mountain riding. They resist thermal fade during repeated braking, remain durable on wet and muddy terrain, produce minimal brake dust, and outlast standard semi-metallic pads by a significant margin.

5. High-Precision Oil-Resistant Seals

Fitted with imported DOT-compatible brake fluid sealing gaskets that are dustproof, waterproof, and mud/sand resistant. These seals are formulated to resist aging and cracking across a wide temperature range, ensuring long-term leak-free operation and lower maintenance overhead over the caliper's lifespan.

6. Standardized Oil Port – Plug-and-Play Installation

The universal national-standard brake oil pipe thread is compatible with your existing brake line — no cutting or modification of the original oil circuit required. Simply screw the line in and ride.

Specifications

Model: Zeus ES-432 (JK26)
Material: CNC Forged Aluminum Alloy
Piston Configuration: Opposed Four-Piston
Piston Diameter: 34mm
Mounting Pitch: 100mm Standard
Brake Pad Type: Track-Grade Sintered
Available Colors: Bright Silver / Black / Purple
Seal Type: DOT-Compatible Oil-Resistant
Country of Origin: Mainland China

Related Products You May Like

External Resources

For cycling safety standards and best practices, visit the U.S. Consumer Product Safety Commission – Bicycle Safety.

Learn more: Bicycle brake

Frequently Asked Questions

Q: Is the Zeus ES-432 four-piston caliper compatible with standard front forks?

A: Yes. The ES-432 uses a 100mm standard mounting pitch, which is compatible with the vast majority of front fork adapters available on the market. You can pair it with a matching adapter bracket for a straightforward front wheel disc brake conversion without any custom fabrication.

Q: Do I need to replace the sintered brake pads that come included?

A: The included track-grade sintered pads are designed for long service life — significantly longer than standard semi-metallic pads. They perform well in wet, muddy, and high-heat conditions. Replacement will eventually be needed with heavy use, but most riders will find the included pads last through extended trail and mountain riding seasons.

Q: Can I connect my existing brake line without modification?

A: Absolutely. The ES-432 features a universal national-standard oil pipe thread, which means your original vehicle brake line threads directly in. No cutting, splicing, or re-routing is required — installation is as simple as screwing the line into the port.

Q: What colors is the Zeus ES-432 caliper available in?

A: The caliper is available in three baked paint finishes: Bright Silver, Black, and Purple. Each finish is applied to the CNC-machined aluminum body for a clean, high-texture appearance that stands out on any build.