Braking System with Advanced Logic 4-Channel ABS
All Civics are equipped with a new 4-channel ABS with Electronic Brake Distribution (EBD). Disc brakes are used on the front and rear wheels on Si and EX models; rear drum brakes are used on Hybrid, LX and DX models.

The 4-channel ABS with EBD independently modulates braking power at each wheel, as opposed to the more common 3-channel system that modulates the front wheels independently and the rear wheels with equal braking force. The new 4-channel capability allows the rear wheels to react independently while cornering, representing a significant enhancement to the ABS system's ability to influence vehicle stability and safety. Electronic Brake Distribution proportions brake power to the rear wheels based on vehicle weight distribution. Further additions to the braking system include a new ABS control module (that applies the new 4-channel features) and a relatively large 9-inch power brake booster that improves pedal feel. Higher pedal rigidity with a decreased pedal stroke provides a more immediate braking response. Bottom line, the Civic stops with greater authority and added control.

Front and Rear Brakes
Civic Si
High performance stopping power is provided by a robust front and rear disc brake system on the Civic Si that provides short stopping distances and enhanced resistance to fade. The Civic Si uses 11.8-inch high-performance ventilated discs in front (0.40-inch rotor width) and 2-piston high performance calipers. Supplemental fresh air front brake cooling is received via an aerodynamic strake positioned in front of the tire. The strake directs fresh air across the rotors for cooling much like a dedicated brake duct, allowing the brakes to be more resistant to fade in demanding high frequency and high performance stopping situations. The rear disc brakes are 10.2-inch solid discs (0.35-inch rotor width) with single piston calipers.

All Models (Except Si)
Civic Hybrid, EX, LX and DX models are equipped with 10.3-inch ventilated front discs (0.4-inch rotor thickness) and double piston calipers. The braking systems on all models were engineered to provide enhanced brake feel and improved performance. The Civic EX trim level has rear 10.2-inch discs (0.35-inch rotor thickness) with single piston calipers. Civic Hybrid, LX and DX models use 7.8-inch rear drum brakes. Additionally, the Civic Hybrid's hydraulic brake booster electronically cooperates with the Engine ECU to provide optimum regenerative braking.

Source: Honda PR