This rear disc brake conversion kit replaces the factory rear drums on Austin Healey models from late BN1 (chassis 221536) through BJ8. The CapeSport design delivers consistent, predictable braking in modern traffic while retaining compatibility with original wire or steel wheels.
Suitable for Austin Healey models from late BN1 (chassis 221536) to BJ8 with 5-stud rear axles. Compatible with both wire and steel wheels. Intended for everyday road use and long-distance touring where repeatable, balanced braking is required.
For balanced braking across all four wheels, pair this rear kit with a suitable front disc brake conversion kit (BN1) or front disc brake conversion kit (BN2–BN6), including aluminium 4-pot options for BN1 and BN2–BN6.
Once installation is complete, the system will need bleeding. To make the job quicker and cleaner, many restorers rely on the Gunson Eezibleed kit, a handy tool that allows one-person brake bleeding with consistent results.
If you already have a rear disc conversion fitted and only need service parts, replacement rear brake discs for BN1–BJ8 (5-stud axle) are available separately.
Thinking about tackling the job this season? Read “When the Nights Draw In: Healey Brakes Done Right” for seasonal workshop advice and how this CapeSport kit fits into a complete Healey brake refresh.
Designed for late BN1 (chassis 221536) through BJ8 models with 5-stud rear axles. If the axle or hubs have been altered from standard, verify dimensions before ordering.
Yes. The kit is compatible with both wire and steel wheel configurations on 5-stud axles. Check spoke/inner rim clearance where non-standard wheels are fitted.
Yes. A cable-operated handbrake linkage is included and integrates with the existing mechanism.
Most standard road applications do not require changes. Brake balance varies by vehicle condition and front setup; assess pedal feel and rear lock-up during testing. If required, a proportioning (pressure limiting) valve can be introduced by a professional.
The kit is engineered for bolt-on installation to the specified models. Cars with non-standard axles, hubs, or previous modifications may require additional checks or minor adaptation.
Clearance is generally suitable for standard Healey fitments. For aftermarket wheels or unusual spoke profiles, confirm clearance to caliper and bracket before final assembly.
Use a progressive bedding procedure: several light-to-moderate stops from low to medium speed, allowing cooling between applications. Avoid heavy braking during the first 200–300 miles.
Follow the supplied instructions for sequence and fastener locations. Use Healey workshop-manual torque values for axle, hub and suspension fasteners unless specified in the kit documentation.
This road-use conversion should be installed and tested by a competent technician. After installation, recheck fasteners and inspect for leaks after the initial bedding-in period.
No. This conversion is designed for late BN1 models from chassis number 221536 onwards, through to the end of BJ8 production. Earlier BN1 cars with the 4-stud rear axle are not compatible. Always check your chassis number and axle type before ordering.
Once the conversion kit is fitted, the brake system will need bleeding. While this can be done traditionally with two people, many Healey owners prefer a quicker and cleaner option.
The Gunson Eezibleed kit allows one-person bleeding with consistent pressure, making the process simple and reliable.
Order the Gunson Eezibleed kit →
CAPESPORT - 5 stud rear axle only
