J.C. Whitney JM27160011 OEM Replacement Rear Right Brake Caliper 1-Piston

The J.C. Whitney JM27160011 is an OEM-replacement rear right (passenger side) disc brake caliper designed as a direct-fit replacement for the Mazda Miata. Engineered to restore proper braking performance, this single-piston caliper is built to match the original equipment specifications of the factory unit it replaces.

The brake caliper is a critical hydraulic component in the disc brake system. When the brake pedal is applied, pressurized fluid forces the piston outward, clamping the brake pads against the rotor to generate the friction needed to slow and stop the vehicle. A worn or leaking caliper can cause uneven braking, pad drag, reduced stopping power, or fluid loss—making timely replacement essential for safe vehicle operation.

Key Features:

• OEM Replacement Design: Built to match factory specifications for a direct, no-modification installation
• Single-Piston Construction: Features a 1-piston design consistent with the original Mazda Miata rear brake caliper
• Right Side (Passenger Side): Specifically engineered for the rear right position
• Antirust Coating: Protective finish helps extend service life and resist corrosion
• Inlet Port Size: M10 x 1.0; Bleeder Port Size: M7 x 1.0

This caliper is sold individually (single unit) and is intended for the rear passenger side of the vehicle. Always replace brake hardware in axle pairs when possible to maintain balanced braking performance, and bleed the brake system thoroughly after installation.