Are the GiroDisc Rear Rotors for Mercedes-Benz S55 a bolt-on part?

Yes. The Rear Rotors for Mercedes-Benz S55 and CL55 AMG are a direct replacement for the factory rear discs and need no modifications. The original calipers go back on unchanged, so the brake balance and ABS efficiency stay as the factory intended.

Is there a dimpled and slotted option for the rear?

Yes. GiroDisc lists a dimpled and slotted version of this rear rotor under part number A2-072DS. The standard version described here uses the GiroDisc slotted face, which keeps the friction surface clean and prevents a water film in wet weather.

Why upgrade the rear rotors on an S55 or CL55?

Matching rear rotors give the same floating design and iron at both ends, so pedal feel and wear stay even. The rear ring also resists heat distortion and sheds rotating, unsprung weight, which complements a GiroDisc front upgrade on these heavy cars.

How are the floating rear rings kept quiet?

GiroDisc fits anti-noise spring washers to the drive pins on the ring side. They let the ring expand with heat and stay centered, while removing the cold rattle floating rotors are known for, so the car stays as quiet as a big AMG should.

Where does the iron in the ring come from?

The ring is cast from GiroDisc proprietary iron poured in the USA and machined start to finish at the GiroDisc facility in Bellingham, Washington. The hats are machined from US-sourced 6061-T6 aircraft-specification aluminum, and GiroDisc makes the alloy steel drive pins to its own specification.

Description

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Description

GiroDisc Rear Rotors for Mercedes-Benz S55 AMG and CL55 AMG

GiroDisc’s Rear Rotors for Mercedes-Benz S55 AMG and CL55 AMG bring the two-piece floating design to the back axle of these big AMG cars. GiroDisc builds them as a direct replacement for the factory rear discs, with a 6061-T6 aluminum hat carrying a ring of its proprietary cast iron, poured in the USA and machined in Bellingham, Washington. Matching the GiroDisc fronts at the rear keeps the pedal feel and the wear consistent. For owners who have already upgraded the front axle, these complete the job.

Fitment and Installation

The rotors bolt on in place of the original rear discs without modification, and the factory rear calipers are refitted unchanged, so brake bias and ABS efficiency are preserved. Each rotor is handed for its side. The cap screws that hold the drive pins may look loose by design; they are never tightened beyond 60 in-lb (7 Nm).

Features

Direct replacement for the factory rear discs
6061-T6 aluminum hat machined from US-sourced stock
Proprietary iron ring poured in the USA
Curved vanes for steady rear cooling
Cadmium-plated drive pins with anti-noise spring washers

What’s Included

Rear rotor assemblies (L/R)

Applications

Mercedes-Benz CL55 AMG: Rear axle
Mercedes-Benz S55 AMG: Rear axle

Notes

The Rear Rotors for Mercedes-Benz S55 and CL55 pair with the GiroDisc S55 and CL55 front rotors
GiroDisc also offers a dimpled and slotted version, the GiroDisc S55 and CL55 dimpled and slotted rear rotors
Each rotor is labeled left or right for vane direction
Stock photography may not depict the actual product

Frequently Asked Questions

Are the GiroDisc Rear Rotors for Mercedes-Benz S55 a bolt-on part? Yes. The Rear Rotors for Mercedes-Benz S55 and CL55 AMG are a direct replacement for the factory rear discs and need no modifications. The original calipers go back on unchanged, so the brake balance and ABS efficiency stay as the factory intended.
Is there a dimpled and slotted option for the rear? Yes. GiroDisc lists a dimpled and slotted version of this rear rotor under part number A2-072DS. The standard version described here uses the GiroDisc slotted face, which keeps the friction surface clean and prevents a water film in wet weather.
Why upgrade the rear rotors on an S55 or CL55? Matching rear rotors give the same floating design and iron at both ends, so pedal feel and wear stay even. The rear ring also resists heat distortion and sheds rotating, unsprung weight, which complements a GiroDisc front upgrade on these heavy cars.
How are the floating rear rings kept quiet? GiroDisc fits anti-noise spring washers to the drive pins on the ring side. They let the ring expand with heat and stay centered, while removing the cold rattle floating rotors are known for, so the car stays as quiet as a big AMG should.
Where does the iron in the ring come from? The ring is cast from GiroDisc proprietary iron poured in the USA and machined start to finish at the GiroDisc facility in Bellingham, Washington. The hats are machined from US-sourced 6061-T6 aircraft-specification aluminum, and GiroDisc makes the alloy steel drive pins to its own specification.

About GiroDisc

GiroDisc designs, manufactures, and sells 2-piece, fully floating brake rotors for a wide range of performance vehicles. Every major component, including the hats, rotor rings, and drive pins, is manufactured in-house at their facility in Bellingham, Washington, from domestically sourced materials. GiroDisc rotors use a proprietary high-carbon iron ring formulated for superior metallurgy and thermal performance, paired with reusable machined-aluminum hats that reduce the long-term cost of maintaining a high-performance brake system. The 2-piece floating design sheds unsprung and rotating mass while remaining street-friendly, delivering race-proven braking for track and street use alike.

Additional Information

The Bulletproof Automotive website contains many thousands of products purchased in multiple different currencies. All of the prices are entered manually and accurately at the time of entry. Due to the consistently fluctuating international exchange rates, at times prices may not be able to be honored at their original intended rate. We apologize for any inconvenience this may cause, unfortunately our website is unable to compensate dynamically for what can at times be volatile changes in the cost of items due to currency values fluctuating, changes in prices from suppliers, changes in shipping and import duties, and other factors. Rest assured that any order you place on line will be at zero risk to you in this area. If in the event your order cannot be fulfilled at the original intended website price we will offer you a 100% refund, no questions asked. We will continue to do our best to maintain updated prices and we will always continue to offer our price match guarantees as well to ensure our prices are always the best for you. In short, prices may change without notice. It is always advised to give us a call prior to placing your order online to confirm availability and to confirm current pricing.

Shipping Policy

Items that are in stock in the US, either at Bulletproof’s warehouse or at a supplier’s warehouse, are generally delivered within 7-10 days. Special order items from overseas take considerably longer. As a courtesy Bulletproof offers delivery estimates to our customers which take into consideration manufacturer availability and shipping schedule. These estimates represent our best guess based on previous orders from the manufacturer and do not in any way imply a guaranteed delivery window. Many manufacturers work in a “just in time” inventory system and often take 2-20+ weeks to produce an item once an order is submitted. All deliverable items are then sent to our Japanese warehouse. Bulletproof ships a minimum of one full ocean freight container every month from Japan, oftentimes more than one a month. Ocean freight takes an average of 4 weeks. Typically it breaks down to one week in Japan for paperwork and customs, two weeks by boat and one week in US customs/clearance. Due to the wide number of variables between manufacturer and shipping schedules, delivery estimates are simply just that – estimates. We attempt to estimate conservatively and we usually deliver faster than our estimates suggest. It is not Bulletproof’s policy to guarantee delivery time of any special order item, this is impossible for us to do. By ordering you acknowledge that there is no required delivery ETA and an order may not be canceled or altered due to manufacturing or shipping delays, all ETA’s are provided as a best guess only. Please review the full Terms & Conditions here.

BP Pricing Difference

We do pricing a little differently on our JDM brands and we believe in making things simple and clear. No hidden fees or surcharges. Every price you see includes the shipping cost to our office in Los Angeles, California and all the associated taxes/duties/fees for bringing the products into the US. The only shipping you ever pay is from our facility in the US to your location. Be wary of resellers that don’t include the cost of international shipping in their pricing on JDM parts. While we believe we’ll always have the lowest all-in price on JDM products, we offer a price match guarantee for all authentic parts purchased from authorized dealers as well. For many international customers, it’s much more affordable to ship from the USA than from Japan directly, as the air freight and ocean freight costs are typically much less. However, for customers looking to ship directly from Japan outside of North America, or domestically in Japan, we can provide pricing specifically for that scenario. Please do not hesitate to contact us with any pricing questions or concerns. Please email us at sales@bulletproofautomotive.com with any inquiries.

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GiroDisc Rear Rotors for Mercedes-Benz S55 AMG and CL55 AMG [A2-072]

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GiroDisc Rear Rotors for Mercedes-Benz S55 AMG and CL55 AMG

Fitment and Installation

Features

What’s Included

Applications

Notes

Frequently Asked Questions

About GiroDisc

Reviews