Performance Machine 4 Piston 125x4R Rear Brake Caliper Kit

Performance Machine 4 Piston 125x4R Rear Brake Caliper Kit

When your custom build demands performance to match its style, this rear brake kit delivers the consistent, fade-resistant stopping power that serious riders trust. Whether carving through curves or hauling down from highway speed, the four-piston design gives your chopper or bobber a firm, responsive pedal feel that inspires confidence on every ride.

Key Features

• Pairs a Performance Machine 0052-2400 series classic 4-piston caliper with a Twisted Choppers bracket kit — includes pads, frame mount, and all required hardware
• Engineered for custom choppers, bobbers, and any build requiring a universal mounting solution
• Available in Polished, Chrome, and Black Contrast Cut finishes to match your build aesthetic
• Two axle size options to accommodate the most common custom rear axle diameters
• Caliper and bracket both made in the USA

Technical Specifications

• Caliper type: 4-piston
• Caliper series: Performance Machine 0052-2400 / 125x4R
• Bracket kit: Twisted Choppers proprietary frame mount
• Brake disc rotor size: 11.5″
• Bracket material: 3/8″ aluminum
• Master cylinder bore requirement: 5/8″
• Axle compatibility: 3/4″ or 1″/25mm
• Available finishes: Polished, Chrome, Black Contrast Cut
• Made in the USA

Fitment Notes

• Select axle size variant (3/4″ or 1″/25mm) to match your rear axle diameter before ordering
• Caliper requires a 5/8″ bore master cylinder — verify master cylinder compatibility prior to installation
• Designed as a universal mounting kit — no OEM vehicle-specific fitment required
• Please review the Fitment tab for complete compatibility details and application guidance