ABS 2390-S Brake Drum

ABS 2390‑S Brake Drum

The ABS 2390‑S Brake Drum is a high‑performance, OEM‑grade component designed for rear braking systems on classic British and Italian compact cars. It is engineered to deliver reliable stopping power, durability, and ease of installation for enthusiasts who value authenticity and performance.

Key Features

• Material & Construction: Made from high‑strength steel with a precision‑machined interior to ensure uniform brake pad contact and heat dissipation.
• Diameter & Thickness: Standard 178 mm outer diameter with a thickness that balances weight and structural integrity.
• Heat Management: Designed with a shallow groove profile to promote efficient heat transfer, reducing brake fade during prolonged use.
• Compatibility: Original Equipment (OE) fitment for a range of models including the Austin Mini I, Innocenti Mini II, Rover Mini Cabriolet (XN), and the Moke. It also fits aftermarket brake kits that specify the 2390‑S series.
• Finish: Corrosion‑resistant coating that protects against rust and extends service life, especially in coastal or high‑humidity environments.
• Installation: Straightforward bolt‑on design with standard mounting hardware; no special tools required beyond a torque wrench.

Technical Specifications

Installation Guide

1. Preparation: Remove the existing brake drum by loosening and removing the mounting bolts. Keep all hardware for reuse.
2. Inspection: Check the hub and brake components for wear. Replace any worn parts before installing the new drum.
3. Mounting: Align the ABS 2390‑S drum with the hub and secure it using the original mounting bolts. Tighten to the manufacturer’s torque specification.
4. Brake Pad Installation: Install the brake pads into the caliper or backing plate, ensuring proper alignment with the drum’s interior surface.
5. Reassembly: Reinstall the wheel and perform a brake fluid check. Bleed the brakes if necessary to remove air from the system.
6. Test: Conduct a low‑speed test drive to confirm proper operation and listen for any abnormal noises.

Maintenance & Care

• Regular Inspection: Check for signs of wear such as uneven pad contact, glazing, or excessive drum thickness.
• Cleaning: Use a non‑abrasive brush and brake cleaner to remove dust and debris. Avoid harsh chemicals that could damage the corrosion‑resistant coating.
• Brake Fluid: Maintain brake fluid at the recommended level and replace it according to the vehicle’s service schedule.
• Heat Management: In high‑performance or racing applications, consider using a brake pad compound with higher thermal tolerance to complement the drum’s heat dissipation design.

Performance Benefits

The ABS 2390‑S Brake Drum offers:

• Consistent Stopping Power: The precise machining ensures even pad contact, reducing the risk of brake fade.
• Durability: High‑strength steel construction resists cracking and wear, extending the drum’s service life.
• Authentic Fitment: OEM compatibility guarantees that the drum fits perfectly within the original brake assembly, preserving the vehicle’s heritage.
• Ease of Replacement: The standard mounting design allows for quick swaps, ideal for restoration projects or performance upgrades.

Compatibility Summary

The ABS 2390‑S Brake Drum is specifically engineered for rear brake systems on:

• Austin Mini I – Original rear drum size and mounting geometry.
• Austin Mini II / Innocenti Mini II – Shared chassis and brake layout.
• Rover Mini Cabriolet (XN) – Matching rear drum dimensions for the classic convertible.
• Moke – Compact rear drum design compatible with the Moke’s lightweight chassis.
• Aftermarket Kits: Many brake upgrade kits specify the 2390‑S series for authenticity and performance.

Conclusion

The ABS 2390‑S Brake Drum stands out as a reliable, high‑quality component for classic rear braking systems. Its robust construction, precise engineering, and proven fitment across multiple iconic models make it an essential part for restorers, collectors, and performance enthusiasts alike. By choosing the ABS 2390‑S, you ensure that your vehicle’s braking system remains true to its original design while delivering the safety and confidence required for everyday driving or spirited outings.