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Description

BMW E30 E36 Compact Brake Adapter Drum to Disc for Double Caliper

With this drum to disc brake adapter you convert the rear drum brake control arms of a BMW E36 Compact or E30 to disc brakes, with room for two brake calipers per wheel. You connect the second caliper to a hydraulic handbrake, while the foot brake simply keeps working through the original system.

For a drift car on a budget, this is a smart route. You do not have to go looking for control arms that already have disc brakes: the drum brake version you already have under the car becomes the basis.

Key benefits of this drum to disc brake adapter

• Disc brakes on drum brake control arms, without buying other arms
• Two brake calipers per rear wheel: one for the foot brake, one for the handbrake
• Connect a hydraulic handbrake without modifying the original brake system
• Bolted to the original mounting points of the control arm
• 10 mm thick S235 steel, laser-cut
• Zinc-plated against rust
• Set for left and right

Suitable for

BMW with drum brakes on the rear axle

• BMW 3 Series E36 Compact with drum brake control arms
• BMW 3 Series E30 with drum brake control arms
• Brake calipers: from any E36 version except the Compact, or from the rear axle of the E46

Technical specifications

• Item number: 0025
• Application: drum brake to disc brake conversion with two brake calipers per wheel
• Material: S235 steel, zinc-plated
• Thickness: 10 mm
• Production: laser-cut
• Mounting: bolted to the original mounting points
• Contents: 2 adapters (left and right)
• Weight: 1.78 kg

Installation and delivery

You remove the drum brake and the brake backing plate from the control arm and bolt the drum to disc brake adapter to the original mounting points. Then you fit two brake calipers per side with the matching disc. Those parts are not included in the set: you use brake calipers from a regular E36 (not a Compact) or from the rear axle of the E46. Whether bolts are supplied is not stated.

For the foot brake and the handbrake, use brake calipers that belong to the same disc size, and bleed both circuits carefully after installation. Check that the brake lines cannot rub anywhere when the suspension compresses. Then first drive a few gentle laps to bed in the new brake pads before you start using the handbrake hard.

You can find other brackets for an extra brake caliper in our dual caliper brackets category. For the handbrake itself, you can use this hydraulic handbrake, for example.

The control arms you already have, with brake calipers you can find anywhere: that is how you build a dual caliper set-up at the rear.

Why choose this drum to disc brake adapter?

On the E30 and E36 Compact, control arms with drum brakes are cheap and easy to find. With these adapters you do not have to replace them and you still get disc brakes with a separate brake caliper for the handbrake. The calipers come from the E36 or E46, so parts are on sale everywhere. The thick, zinc-plated steel is made for the hard work of a drift car. The adapters have also been tested in drifting and rally.

Frequently asked questions

Do I need control arms with disc brakes?

No. The drum to disc brake adapter is intended precisely for the drum brake control arms of the E36 Compact and the E30.

Which brake calipers can I use?

Brake calipers from all E36 versions, except the Compact, and from the rear axle of the E46.

Are brake calipers and discs included in the set?

No, the set consists of two adapters, for left and right.

Do I have to change anything on my brake system?

The original brake system stays as it is. The extra brake caliper gets its own circuit via the hydraulic handbrake.

How thick is the drum to disc brake adapter?

The adapters are 10 mm thick, made of S235 steel and zinc-plated.

Delivery outside the European Union: different shipping costs may apply. Don’t worry: we will email you as soon as possible after your order and agree the shipping with you. You are not committed to anything without your consent.