Caliso BR31304 Rear Solid Drum-In-Hat Disc Brake Rotor

The Caliso BR31304 is a rear solid disc brake rotor featuring a drum-in-hat (DIH) design that integrates the parking brake drum within the rotor hat. This OEM-replacement rotor is engineered to meet the fit, form, and function requirements of the original equipment part, delivering reliable and consistent stopping performance.

Manufactured to SAE J431 metallurgical standards, this cast iron rotor undergoes computerized precision machining to achieve tight dimensional tolerances and optimal weight balance. The non-directional swirl finish on the braking surfaces promotes improved brake pad bedding and eliminates the need for pre-installation machining. A precise hub hole chamfer ensures a secure, hub-centric fit at installation.

Key Features:

• Solid rotor construction with integrated drum-in-hat parking brake design
• Non-directional swirl finish for improved pad bedding and quieter operation
• Precise hub hole chamfer for accurate hub-centric fitment
• Detailed castings with extractor and set screw holes for easier removal and installation
• Cast iron construction engineered to SAE J431 metallurgical standards
• Manufactured in an ISO-certified facility to OEM fit, form, and function standards

Specifications:

• Position: Rear
• Rotor Type: Solid
• Outside Diameter: 11.09 in (281.80 mm)
• Inside Diameter: 6.69 in (169.80 mm)
• Nominal Thickness: 0.35 in (9.00 mm)
• Discard Thickness: 0.30 in (7.50 mm)
• Overall Height: 2.32 in (59.00 mm)
• Center Hole Diameter: 2.52 in (64.10 mm)
• Bolt Holes: 5
• Bolt Hole Diameter: 12.70 mm
• Weight: 9.7 lbs (4.4 kg)

Cross-References: Raybestos 980071 | OE Number 42510S9AN00

The Caliso BR31304 is a dependable OEM-quality replacement rotor built for drivers who demand consistent, fade-free braking performance and a straightforward installation.