What size are bolt r on rear brake c max?

The rear brake caliper bolts on a Citroën C4 Cactus (often referred to as "C Max" in some regions) are typically M10 in size, but it's essential to check the specific model year and variant for accuracy. Always refer to the vehicle's service manual for precise specifications and torque settings. If in doubt, consulting a professional mechanic or the manufacturer is recommended.