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ATE BMW Brake Calipers for BMW Z4 M Roadster S54 (2003-2008)

Clear BMW chassis

Brake calipers require periodic maintenance just like the rest of your braking system. The number one problem with brake calipers is caused by rust. The caliper and the internal piston are made from cast iron and is prone to rust just like any other ferrous material. Not replacing your brake fluid regularly will lead to water entering or forming in the system and that will rust the calipers and hard brake lines from the inside out. A rusted caliper will cause the piston to seize, creating a stuck caliper, dragging brakes, wheel vibrations, pulling to one side, excessive brake dust and heat, or even a total loss of brake function on that wheel.

We offer brake caliper rebuild kits but sometimes the condition of the inner piston is just not safe to re-use. Unfortunately you really don't know for sure until you have removed the caliper and taken it apart. As a convenience we offer freshly rebuilt calipers. Each caliper is cleaned and sand-blasted to remove surface rust and dirt/grime. The pistons are rebuilt with new seals and dust boots and re-installed into the caliper housing. The caliper you get is ready for a direct replacement on your car! There's no mess from brake fluid leaking everywhere and no fighting to get the piston seals to fit. Replacing the calipers with newly rebuilt units does not take any more signifcant time during a typical brake pad/rotor overhaul. Rebuilt calipers are sold on a core exchange basis so we need your original calipers returned to us.

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ATE Front Caliper Rebuild Kit - Priced Per Caliper - E31, E32, E34, E...

affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

T#:373986

Part#: 34111157037

Ships in 1-3 days

$ 33.77 USD

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$ 33.77 USD

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Includes seals for rebuilding a caliper

ATE Guide Bushing Set - Priced Per Caliper

affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

T#:12583

Part#: 34111157038

Ships in 1 day

37% off MSRP $ 27.13

MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

$ 16.99 USD

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37% off MSRP

$ 27.13

MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

$ 16.99 USD

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REPAIR KIT GUIDE BUSH:348030

ATE Caliper Guide Bolt

affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

T#:362208

Part#: 34111157041

In Stock

$ 10.40

This product was last offered at the strikethrough price on
03-30-2026

$ 5.14 USD

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$ 5.14 USD

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Lets the caliper slide back and forth

OEM ATE Guide Pin Plug - Multiple BMWs

affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

T#:374802

Part#: 34111154979

In Stock at Vendor

$ 3.50 USD

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$ 3.50 USD

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This guide pin plug keeps contamination out of your caliper slide pins, preventing premature wear and failure.

ATE Rear Brake Anti Rattle Clip

affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

T#:362330

Part#: 34216753675

In Stock

61% off MSRP $ 22.98

MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

$ 8.87 USD

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61% off MSRP

$ 22.98

MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

$ 8.87 USD

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Essential component for quiet operation

ATE Brake Caliper Bleeder Screw - Multiple BMWs

affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

T#:375326

Part#: 34116758107

Ships in 1 Business Day

$ 6.78 USD

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$ 6.78 USD

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