Are the GiroDisc Rear Rotors for Evo X a direct replacement?

Yes. GiroDisc describes the GiroDisc Rear Rotors for Evo X as a direct replacement for the factory disc with no modifications necessary. They bolt to the car and work with the OE rear calipers, so the factory brake bias and ABS efficiency are maintained.

What part number replaces the Evo X rear rings when they wear?

GiroDisc sells the Evo X rear replacement rings as D2-047, supplied in pairs with new mounting hardware. The aluminum hats from these rotors stay on the car, and only the iron rings are changed once they reach minimum thickness or show a crack to the edge.

Can the Evo X rear cap screws be tightened to stop them looking loose?

No. The floating design needs a small amount of movement, so the cap screws can look loose on purpose. GiroDisc states they are never tightened beyond 60 in-lb, or 7 Nm, and spring washers keep the rotor quiet when the car is cold.

Are the Evo X rear rotors specific to each side?

Yes. Because the internal vanes are curved, GiroDisc makes left and right rotors and labels each one for its position. Installing them on the labeled side keeps the vanes pumping air outward from the hub, which is how they keep the disc cool.

Why fit GiroDisc rotors at the rear of the Evo as well?

Fitting both axles gives the Evo X a matched set of floating two-piece rotors, all serviced by replacing rings instead of complete discs. Both ends keep their factory calipers, so the brake balance that suits the car on the street and track is unchanged.

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Description

GiroDisc Rear Rotors for Evo X Mitsubishi Lancer Evolution

GiroDisc’s Rear Rotors for Evo X Mitsubishi Lancer Evolution cars swap the factory rear discs for floating two-piece assemblies that need no modifications to fit. They bolt directly to the car and run on the original rear calipers, so brake bias and ABS efficiency stay as Mitsubishi set them. The ring is GiroDisc’s proprietary cast iron, poured in the USA and machined start to finish in-house, and it floats on a 6061-T6 aluminum hat through 10 drive pins. Owners fitting the GiroDisc fronts should add these to give the Evo a matched set at both ends.

Construction

Ten high-strength alloy steel drive pins, made by GiroDisc and cadmium plated, carry the braking load while letting the ring float axially and radially. Class 12.9 cap screws with hardened washers secure them, and anti-noise spring washers on the rotor side let the ring expand with heat without rattling when cold. Inside, curved vanes pump air from the hub through the disc.

Features

Direct replacement for the Evo X rear disc, no modifications
Works with the original rear calipers
Factory brake bias and ABS efficiency retained
Proprietary cast iron ring, poured in the USA
10 cadmium-plated drive pins with class 12.9 cap screws
Slotted face for a clean, water-free friction surface

What’s Included

Rear rotor assemblies (L/R)

Applications

Mitsubishi Lancer Evolution X: 2.0L turbocharged I4

Notes

The GiroDisc Rear Rotors for Evo X replace the factory rear discs with no modifications
Worn rings are renewed with the GiroDisc Evo X rear replacement rings, which bolt to these hats
The front axle takes the GiroDisc Evo X front rotors
Stock photography may not depict the actual product

Frequently Asked Questions

Are the GiroDisc Rear Rotors for Evo X a direct replacement? Yes. GiroDisc describes the GiroDisc Rear Rotors for Evo X as a direct replacement for the factory disc with no modifications necessary. They bolt to the car and work with the OE rear calipers, so the factory brake bias and ABS efficiency are maintained.
What part number replaces the Evo X rear rings when they wear? GiroDisc sells the Evo X rear replacement rings as D2-047, supplied in pairs with new mounting hardware. The aluminum hats from these rotors stay on the car, and only the iron rings are changed once they reach minimum thickness or show a crack to the edge.
Can the Evo X rear cap screws be tightened to stop them looking loose? No. The floating design needs a small amount of movement, so the cap screws can look loose on purpose. GiroDisc states they are never tightened beyond 60 in-lb, or 7 Nm, and spring washers keep the rotor quiet when the car is cold.
Are the Evo X rear rotors specific to each side? Yes. Because the internal vanes are curved, GiroDisc makes left and right rotors and labels each one for its position. Installing them on the labeled side keeps the vanes pumping air outward from the hub, which is how they keep the disc cool.
Why fit GiroDisc rotors at the rear of the Evo as well? Fitting both axles gives the Evo X a matched set of floating two-piece rotors, all serviced by replacing rings instead of complete discs. Both ends keep their factory calipers, so the brake balance that suits the car on the street and track is unchanged.

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 Evo X Mitsubishi Lancer Evolution [A2-047]

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GiroDisc Rear Rotors for Evo X Mitsubishi Lancer Evolution

Construction

Features

What’s Included

Applications

Notes

Frequently Asked Questions

About GiroDisc

Reviews