Do the GiroDisc Front Rotors for W463 need a big brake kit to reach 410mm?

No. The GiroDisc Front Rotors for W463 come with caliper spacers and longer bolts that move the factory calipers outward to suit the 410mm disc. GiroDisc states that no other modification is needed, so the G63 keeps its own calipers, its factory brake bias and its ABS calibration while gaining the larger rotor.

What hardware is in the box with these G63 front rotors?

The pair ships as two complete rotor assemblies, left and right, each with the aluminum hat and iron ring already joined by drive pins. GiroDisc also supplies the caliper spacers and the longer bolts needed to mount the factory calipers over the larger disc.

How are the G63 front rings replaced when they wear out?

The aluminum hats are reusable. When a ring reaches the minimum thickness marked on the hat and the ring edge, or a crack runs to the edge, the old ring is unbolted and a D1-260 replacement ring pair goes on with fresh hardware. The cap screws are then tightened to no more than 60 in-lb.

Why do the cap screws on the G63 front rotors feel loose?

The ring is meant to float. Its drive pins let it move slightly on the hat so it can expand with heat, and spring washers on the pins stop it rattling when cold. That small movement is normal, and the screws must never be tightened past 60 in-lb to remove it.

Is there a left and a right rotor in the G63 front pair?

Yes. GiroDisc rotors are left and right handed because the curved internal vanes must turn in the correct direction to pump air from the hub outward. Each rotor is labeled for its position, so check the marking before fitting and keep each assembly on the side of the vehicle it was made for.

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Description

GiroDisc Front Rotors for W463 Mercedes-AMG G63

GiroDisc’s Front Rotors for W463 Mercedes-AMG G63 take the front axle of the big AMG to a 410mm disc, using caliper spacers and longer bolts that come in the box, so the extra diameter arrives without a big brake kit. The friction ring is cast from GiroDisc’s own iron, poured in the USA and machined start to finish in Bellingham, Washington, and it floats on a hat machined from 6061-T6 aluminum. This is the front upgrade for a G63 owner who drives hard on mountain roads and wants more disc behind the factory calipers.

Fitment and Installation

The GiroDisc Front Rotors for W463 are a direct replacement on the front hubs: the supplied spacers and longer bolts relocate the factory calipers for the 410mm disc, and nothing else needs modifying. Because the calipers stay, brake bias and ABS calibration remain as Mercedes-AMG set them. Each rotor uses 48 curved directional vanes to pump air from the hub outward, and spring washers on the drive pins keep the floating ring quiet when cold.

Features

410mm diameter, upsized with the supplied caliper spacers
Caliper spacers and longer bolts included
48 curved directional vanes pumping air through the disc
US-sourced 6061-T6 aluminum hat
GiroDisc cast iron ring, poured in the USA and machined in-house
Cadmium-plated alloy steel drive pins secured by grade 12 cap screws

What’s Included

Front rotor assemblies (L/R)
Caliper spacers and longer bolts

Applications

Mercedes-AMG G63: W463

Notes

Worn rings are renewed with the GiroDisc G63 front replacement rings, which bolt to these hats
The GiroDisc G63 rear rotors complete the set on the rear axle
A dimpled and slotted version is listed separately as the GiroDisc dimpled slotted front rotors for the G63
The cap screws can look loose by design and are never tightened beyond 60 in-lb (7 Nm)
Stock photography may not depict the actual product

Frequently Asked Questions

Do the GiroDisc Front Rotors for W463 need a big brake kit to reach 410mm? No. The GiroDisc Front Rotors for W463 come with caliper spacers and longer bolts that move the factory calipers outward to suit the 410mm disc. GiroDisc states that no other modification is needed, so the G63 keeps its own calipers, its factory brake bias and its ABS calibration while gaining the larger rotor.
What hardware is in the box with these G63 front rotors? The pair ships as two complete rotor assemblies, left and right, each with the aluminum hat and iron ring already joined by drive pins. GiroDisc also supplies the caliper spacers and the longer bolts needed to mount the factory calipers over the larger disc.
How are the G63 front rings replaced when they wear out? The aluminum hats are reusable. When a ring reaches the minimum thickness marked on the hat and the ring edge, or a crack runs to the edge, the old ring is unbolted and a D1-260 replacement ring pair goes on with fresh hardware. The cap screws are then tightened to no more than 60 in-lb.
Why do the cap screws on the G63 front rotors feel loose? The ring is meant to float. Its drive pins let it move slightly on the hat so it can expand with heat, and spring washers on the pins stop it rattling when cold. That small movement is normal, and the screws must never be tightened past 60 in-lb to remove it.
Is there a left and a right rotor in the G63 front pair? Yes. GiroDisc rotors are left and right handed because the curved internal vanes must turn in the correct direction to pump air from the hub outward. Each rotor is labeled for its position, so check the marking before fitting and keep each assembly on the side of the vehicle it was made for.

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 Front Rotors for W463 Mercedes-AMG G63 [A1-260]

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GiroDisc Front Rotors for W463 Mercedes-AMG G63

Fitment and Installation

Features

What’s Included

Applications

Notes

Frequently Asked Questions

About GiroDisc

Reviews