SKU: 62217710924

GiroDisc 12-16 Mercedes-Benz SLK55 (R172) Slotted Rear Rotors

Sale price$453.15 Regular price$503.50
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Ships within 48 hours · Estimated delivery Aug 28 - Sep 2

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Description

GiroDisc 12-16 Mercedes-Benz SLK55 (R172) Slotted Rear RotorsSold priced in pairs Welcome to GiroDisc! Brake rotors have long been the overlooked link in performance car braking systems. Traditional 1 piece brake rotors are heavy and retain heat, diminishing their effectiveness and adding unsprung weight that adversely affects handling. When GiroDisc was founded in 2003, we made it our mission to design and manufacture 2 piece brake rotors that would perform flawlessly at the limits. Our fully floating design


Sold/priced in pairs


Welcome to GiroDisc!

Brake rotors have long been the overlooked link in performance car braking systems. Traditional 1-piece brake rotors are heavy and retain heat, diminishing their effectiveness and adding unsprung weight that adversely affects handling.

When GiroDisc was founded in 2003, we made it our mission to design and manufacture 2-piece brake rotors that would perform flawlessly at the limits. Our fully-floating design uses tension hardware to ensure that our rotors are silent on the street, but ready to go on the track.

By specializing in this area, we can dedicate our efforts to push our engineering and manufacturing to the highest levels in the industry. Customers around the world have found success maximizing the capabilities of their existing brake systems by installing GiroDisc rotors. This often negates the need for a pricier, more complex upgrade like a big brake kit.

GiroDisc is headquartered in Bellingham, Washington, where we design, engineer, manufacture and fulfill orders on site.


The primary purpose of the Girodisc system is to reduce unsprung and overall vehicle weight. The secondary purpose is to increase the ventilation and cooling capacity of the brake disc while retaining it's original dimensions. This is accomplished by using two-piece disc construction. The central hat section of the disc is made from 6061-T6 aircraft specification aluminum.

The disc is made from cast iron, to the same specification and material as used by professional racing organizations. It is a curved vane design, developed in racing to act as a centrifugal pump to force cooling air through the disc. The rotor and hat have a floating mount system, which utilizes high strength alloy steel drive pins, manufactured by Girodisc to our own specifications and cadmium plated for a long lasting corrosion resistance. These pins take the load from braking actions while maintaining the axial and radial float between the hat and disc. The pins are secured by grade 12 cap screws with hardened washers. In order to keep the rotors from making noise when cold, the pins are mounted with anti-noise spring clips on the rotor side which allow the rotor to grow with heat expansion but eliminate the rattle and noise associated with floating rotors. This float also allows the rotor
to self center between the pads.


Important Questions Answered

Q: What is required to install the Girodisc system?

A: The Girodisc system is a direct replacement for the OE disc.
No modifications are necessary. The disc will bolt directly to the car and work with OE calipers and pads perfectly. Once the Girodisc system is in place, simply replace the cast iron rotor when needed. Some discs are larger in diameter and come with caliper spacers. If longer bolts are required, they are also supplied.

Q: How does reducing weight of the braking system benefit the vehicle?
A: The Girodisc will generally weigh between 4 8 lbs less than the oe disc it will replace. This is due to the heavy cast iron hat section being replaced with lightweight, high strength aluminum. The mass of any vehicle requires energy to accelerate or decelerate. Reducing the vehicle mass improves acceleration, and requires less energy to be dissipated during deceleration. Rotating mass requires additional energy in order to increase or decrease its speed of rotation. Decreasing the mass of the disc has a great benefit due to reduction in rotational inertia. This will allow more of the braking force to be available to decelerate the vehicle, not the disc.
Additionally, the mass of the brake system is also unsprung mass. Reducing the unsprung mass has the additional benefit of improved suspension performance, resulting in enhanced ride and handling. Rotating masses require additional energy to vary the plane on which they turn. The lighter the disc, the quicker the response of the vehicle steering due to the reduction in gyroscopic effect/rotational inertia of the disc. As an example, compare the weight of the Ferrari 360 OE disc at 18.2 lbs, and the Girodisc at 14 lbs. The Girodisc is 4.2 lbs lighter per disc. Replacing all four discs will save 16.8 lbs of rotating, unsprung mass.

Q: Why slotted discs?
A: The edges of the slots continuously clean and refresh the pad surface. This will allow the pads to have a maximized friction surface always available. Additionally, they prevent containments from collecting between the pad and disc interface.
The disc is lightened, decreasing its rotational inertia.
Slots prevent the formation of a water film on the disc in wet weather, maintaining the best brake response.

 

Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 62217710924

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4.6 ★★★★★
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Angela W.
Charlottesville, US
★★★★★ 4
Good! Works pretty well. Has a couple issues
Size: 4 Ounce (Pack of 1), Set name: Adult Mint
I have wanted to dump Fluoride for decades; however, when I stopped it and used all natural products sans fluoride...my teeth became sensitive...so I went back. Saw this and did slight reading about it. Bought immediately. Ordered a second tube. LOVE IT. No fluoride. No sensitivity. Not really sure that it whitens much so I am now shopping for that. It is pricey, IMHO.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on August 12, 2025
T
Verified Purchase
Taylor
Phoenix, US
★★★★★ 5
Minty & Whitening Approved!
Size: 4 Ounce (Pack of 4), Set name: Adult Mint
MY FAVORITE fluoride free toothpaste. I still get that slight minty fresh taste and has effectively whitened my teeth as people have noticed and complimented me on.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 1, 2026
T
Verified Purchase
tamir
Belleville, US
★★★★★ 5
Phenomenal NHa toothpaste
Size: 4 Ounce (Pack of 1), Set name: Adult Mint
I am fluoride free. It’s toxic AND did you know it oxidizes the tooth from the inside out and actually MAKES your TEETH YELLOW!? Crest even admitted it. Fluorides risks outweigh the teeth benefits but LUCKILY there’s a more superior solution: nano hydroxyapatite for our teeth remineralization needs. It’s safe and proven to be more effective as a remineralizing agent, unlike fluoride which cannot remineralize on its own - it requires the minerals in your saliva to work, so if your saliva isn’t at the optimal levels, it’s useless to teeth. But I have been on a teeth whitening journey - got my teeth whitened at my dentist but I ate a tangerine and they got stained again. (Stupid me. Bye $325!) While I’ve restored the whiteness back with various at home products, it’s been at the expense of my enamel and has caused a lot of sensitivity. Sensodyne was given to me by my dentist but when I saw it visibly yellow my teeth after the dentist’s first bleaching, I went down a rabbit hole to get to the bottom of it as to why. Additionally, my enamel has been getting more and and more clear, and I needed this to be addressed. NHa has been proven to restore enamel which treats tooth sensitivity instead of just numbing the nerves with potassium nitrate like Sensodyne does which treats the symptom and not the cause (tooth demineralization, sigh… such a western medicine move). When I bought this for the first time I was immediately pleased - there’s NO scary flavor (if you’ve ever tried *natural* toothpastes, especially ones of India, You KNOW!). There’s no cardamom or other cinnamon or out of the ordinary flavors here. The consistency is that of normal toothpaste. Great foaming action. Has helped my sensitivity in 2 applications, I’m 100% without sensitivity but even better, my teeth my are less clear. This truly restores enamel. But, here’s my gripes. #1 - I have no idea how much hydroxyapatite is in this. I know it works, but as a consumer, I deserve to know what % of the star ingredient is used in a product that I’m specifically buying it for. #2 - the toothpaste color is… lightish yellow. Think a healthy “mucus yellow” - I’m so sorry for the that description, but when I spit up bits of toothpaste in my sink, it looks like boogers. That’s an issue when I’m busy whitening my teeth at home & I’m avoiding eating foods that stain teeth for at least 2 hours after so that my saliva can naturally seal my dental pores that are being blasted open with peroxide. If I brush my teeth after whitening I’m extremely paranoid that I’m pushing YELLOW toothpaste into my porous teeth, and I don’t need to keep driving myself crazy thinking that the NHa is potentially sealing that color in. I also want to be able to put my NHa toothpaste in clean whitening trays to give myself a mineralizing treatment without worrying about it staining my teeth from prolonged/concentrated contact. Mind you - this is very paranoid of me to think, but I’ve spent a lot fixing my teeth bleaching then restaining fiasco, so I’m not taking any chances. While I don’t think it’s yellowing my teeth at all, because of the color, I’ll never think it’s whitening them. But don’t let this deter you from purchasing. It helps sensitivity after one use, has shown to make my enamel less clear, and has a normal toothpaste consistency and foams up great. I recommend it.
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Reviewed in the United States on March 20, 2024
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Verified Purchase
Vince!
Massapequa, US
★★★★★ 5
Great alternative to fluoride toothpaste.
Size: 4 Ounce (Pack of 4), Set name: Adult Mint
Taste great, does the job! Highly recommend!
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Reviewed in the United States on April 29, 2026
M
Verified Purchase
M
Carnegie, US
★★★★★ 3
No information on active ingredients.
Size: 4 Ounce (Pack of 4), Set name: Adult Mint
Gave 3 starts as an act of goodwill . The toothpaste does not specify the type or percentage of active ingredients it contains. For a beneficial effect, the concentration of nano-hydroxyapatite should be 10% or higher. Based on indirect information, this product appears to contain only about 4.2%. The manufacturer did not respond to inquiries regarding the active ingredient content, which is concerning. Additionally, the toothpaste has an unusual taste that is definitely not mint.
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Reviewed in the United States on April 21, 2026

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