Which Mustangs do the GiroDisc GT500 Front Rotors for S197 fit?

The GT500 Front Rotors for S197 fit the 2013 and 2014 Shelby GT500 with the 5.8L supercharged engine. Earlier GT500, Boss 302 and Brembo GT models on the S197 platform use a different GiroDisc front rotor, so check the model year before ordering.

How much lighter is the GiroDisc front rotor than the factory part?

GiroDisc quotes about 22.3 lb for its rotor against roughly 31.8 lb for the stock 5.8L GT500 front rotor. That removes close to 19 lb of rotating, unsprung weight across the front axle, which helps acceleration, turn-in and ride control.

Do I need new calipers or brackets to install these rotors?

No. GiroDisc designs these rotors as a direct replacement for the factory discs, so the stock GT500 calipers and brackets are reused without modification. Brake bias and ABS behavior stay as Ford calibrated them, which a big brake kit cannot promise.

What part number are the matching front rings?

The replacement rings for these hats are GiroDisc D1-091, sold in pairs with new hardware. When the iron reaches the minimum thickness marked on the hat and ring edge, the old rings come off and new ones bolt on, while the aluminum hats are kept.

Why do the rotor screws look slightly loose?

The ring is meant to float on the hat so it can expand with heat without warping. GiroDisc tightens the cap screws to no more than 60 in-lb, and spring washers on the drive pins keep the assembly quiet. A small amount of movement is normal and should not be corrected.

Description

Additional Info

Shipping policy

BP PRICING DIFFERENCE

Reviews

Product Inquiry

Description

GiroDisc GT500 Front Rotors for S197 Ford Mustang (2013-2014)

GiroDisc’s GT500 Front Rotors for S197 Ford Mustang Shelby GT500 models from 2013 and 2014 are built only for the cars with the 5.8L engine. GiroDisc weighs each one at about 22.3 lb against roughly 31.8 lb for the factory rotor, a saving of about 9.5 lb at every front corner. Seventy-two internal curved vanes pump air through the ring, and the 6061-T6 aluminum hat is machined from US-sourced stock. For a GT500 that has to slow a heavy, fast car lap after lap, few changes do more for the front end.

Bolt-On and Go

The rotors are a direct replacement for the original front discs, so they bolt to the hubs and the factory calipers go back on with no modifications. Because diameter and caliper stay as Ford built them, the brake bias and ABS efficiency are unchanged. Less rotating and unsprung mass also sharpens acceleration and suspension response, and worn rings are swapped on the same hats.

Features

About 9.5 lb lighter per corner than the factory front rotor, by GiroDisc figures
72 internal curved vanes for strong airflow
US-sourced 6061-T6 aluminum hat
Cadmium-plated alloy steel drive pins made by GiroDisc
Grade 12 cap screws with hardened washers

What’s Included

Front rotor assemblies (L/R)

Applications

Ford Mustang Shelby GT500: S197 | 2013-2014 | 5.8L supercharged V8

Notes

The GT500 Front Rotors for S197 fit 2013-2014 Shelby GT500 cars with the 5.8L engine only; earlier S197 models use a different rotor
Worn rings are renewed with the GiroDisc 2013-2014 GT500 front replacement rings on the same hats
The GiroDisc 2013-2014 GT500 rear rotors are the matching rear set
Stock photography may not depict the actual product

Frequently Asked Questions

Which Mustangs do the GiroDisc GT500 Front Rotors for S197 fit? The GT500 Front Rotors for S197 fit the 2013 and 2014 Shelby GT500 with the 5.8L supercharged engine. Earlier GT500, Boss 302 and Brembo GT models on the S197 platform use a different GiroDisc front rotor, so check the model year before ordering.
How much lighter is the GiroDisc front rotor than the factory part? GiroDisc quotes about 22.3 lb for its rotor against roughly 31.8 lb for the stock 5.8L GT500 front rotor. That removes close to 19 lb of rotating, unsprung weight across the front axle, which helps acceleration, turn-in and ride control.
Do I need new calipers or brackets to install these rotors? No. GiroDisc designs these rotors as a direct replacement for the factory discs, so the stock GT500 calipers and brackets are reused without modification. Brake bias and ABS behavior stay as Ford calibrated them, which a big brake kit cannot promise.
What part number are the matching front rings? The replacement rings for these hats are GiroDisc D1-091, sold in pairs with new hardware. When the iron reaches the minimum thickness marked on the hat and ring edge, the old rings come off and new ones bolt on, while the aluminum hats are kept.
Why do the rotor screws look slightly loose? The ring is meant to float on the hat so it can expand with heat without warping. GiroDisc tightens the cap screws to no more than 60 in-lb, and spring washers on the drive pins keep the assembly quiet. A small amount of movement is normal and should not be corrected.

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.

Reviews

There are no reviews yet.

Only logged in customers who have purchased this product may leave a review.

Product Inquiry

First Name (*required)

Last Name (*required)

Your E-Mail (*required)

Telephone Number (*required)

Country (*required)

Vehicle Year / Make / Model (*required)

Please Explain What do you want to do with your vehicle

Additional Information (optional)

I agree to the terms & conditions and privacy policy and to have Bulletproof Automotive LLC contact me for promotion, marketing and other purposes via email, phone or SMS message.

GiroDisc GT500 Front Rotors for S197 Ford Mustang (2013-2014) [A1-091]

Guaranteed Safe Checkout

GiroDisc GT500 Front Rotors for S197 Ford Mustang (2013-2014)

Bolt-On and Go

Features

What’s Included

Applications

Notes

Frequently Asked Questions

About GiroDisc

Reviews