Caliper Hydraulic Cast Iron — One-Unit Heavy-Duty Trailer Caliper

The Trojan Caliper Hydraulic Cast Iron ONE ONLY is a rugged, single-unit brake caliper designed for the harsh realities of heavy trailer use. Cast from SG iron and finished with Geomet plating, this caliper delivers durable corrosion protection and dependable braking performance in challenging environments—from salty coastal roads to muddy forestry tracks.

Built for longevity and consistent braking

Every detail tests against tough conditions so you don’t have to compromise on safety. The SG iron casting provides outstanding strength and wear resistance, while Geomet plating guards against rust and surface degradation in humid, salt-laden, or muddy settings. A phenolic piston adds high strength without the corrosion-prone drawbacks of metal pistons, helping maintain smooth, predictable braking response over countless miles and seasons.

Premium hardware for reliable service

• Brass slide pins and bleed screws minimize wear and simplify maintenance, keeping the caliper responsive after exposure to moisture and grime.
• Sainless steel fittings for all other connections enhance longevity in corrosive environments.

Rotor compatibility and stopping power

Designed to work with either 225 mm diameter rotors (up to 1500 kg per pair) or 275 mm diameter rotors (up to 2000 kg per pair) when paired with a matching caliper on the opposite wheel. For balanced braking performance, this is intended for a paired axle configuration where one caliper sits on each side of the rotor with the appropriate rotor size.

Important usage notes

Not suitable for boat trailers. This unit is specifically engineered for land-based trailer applications where long service intervals and reliable stopping power are essential in tough environments.

Ideal applications

• Heavy-duty trailers used in long-haul towing, forestry, agriculture, or utility work.
• Vehicles operating in environments with salt, mud, and high humidity where corrosion resistance matters as much as braking force.
• Axles that require a single caliper per side in a paired setup with the correct rotor diameter.

Install, maintain, and get consistent braking

• Match rotor diameter to the specification: 225 mm rotors for up to 1500 kg per pair, or 275 mm rotors for up to 2000 kg per pair when used with the opposite caliper.
• During installation, verify brass slide pins, bleed screws, and stainless steel fittings are correctly seated to maximize longevity and brake feel.
• Include periodic inspection and bleeding as part of routine trailer brake maintenance to preserve consistent braking performance over time.

Why choose Trojan Caliper Hydraulic Cast Iron

Beyond basic stopping power, this caliper emphasizes reliability, low maintenance, and predictable performance in demanding trailer applications. The combination of SG iron casting, Geomet plating, and a corrosion-resistant phenolic piston minimizes upkeep while preserving braking feel, making it a smart choice for operators who value longevity and safety on every journey. Ships from the supplier and typically dispatches within 4–7 days, so you can get back on the road with confidence.