SKU: 85847144520

GiroDisc Ferrari 458 Challenge Slotted Front Rotors

Sale price$1197.00 Regular price$1330.00
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Description

GiroDisc Ferrari 458 Challenge Slotted Front 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.

 

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SKU: 85847144520

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Jaime Velazquez
Omaha, US
★★★★★ 4
Good reference manual for64 Bit Assembly Programming. Not an Introductory text.
Format: Paperback
I initially bought Assembly x64 in easy steps: Modern coding for MASM, SSE & AVX which is an excellent introduction to 64 Bit Assembly. This book however IS NOT an Introductory book - it is more a Reference to X64 Assembly. If you are new to Assembly Programming I suggest buying the introductory book and if you are serious about Assembly Programming then buy this book.
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Reviewed in the United States on March 14, 2024
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Jamie Block
Whiting, US
★★★★★ 5
Parenting philosophy for all ages and stages
Format: Hardcover
Good Inside is the book I find myself referencing more than any other parenting book - well any book for that matter. I'm sure I annoy my friends! I annoy myself with my constant Dr. Becky this, and Dr. Becky that, but the truth is, I want more for my child. And in seeking out ways to understand him better, approach him better, be there for him better, Dr. Becky Kennedy allowed me to look at my own inner child and want better for her too. Good Inside helped me identify sources of my own pain, start healing, and empower me with tools to approach my child's struggles with more compassion, understanding, and confidence. This book sits perfectly between the scientific approach of Whole Brain Child and the spiritual views of The Enlightened Parent. You're gonna get a dose of warm fuzziness with a whole lot of practical and psychological gold! And as I hinted at before, this is for kids of all ages. You're not just getting a book aimed at how to survive the 2yo stage. You're getting a perspective that embeds itself into every relationship you have. Yes; it has been enormously useful with my toddler, but it has also helped my marriage. So, let me annoy you too. Becky Becky Becky!
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Reviewed in the United States on December 20, 2023
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Mama N
Bozeman, US
★★★★★ 5
The most important book a parent will ever read
Format: Hardcover
I have so much I want to say about this book and how it changed my perspective to parenting for the better. There are so many books about what to expect when you first find out you’re pregnant and how to go about the next newborn/infant stage. There’s not enough talk about needing to read parenting books beyond the first 12 months. To be honest, I found this book the most motivating, inspiring and HELPFUL Of them all. This book is definitely geared towards the toddler and beyond years, and I really wish I had read this earlier. Please do yourself a favor and read this book prior to toddler years. Even if you think you know how to go about helping foster your on childs independent, appropriate, and emotional development, as well as sibling/ friendship hardship in the correct manner, I challenged you to read this book to make sure what you’re doing (or plan to do) is truly right. This book helped me develop the tools (actions and word choices) that I needed to improve my reactions towards undesirable words or actions by my toddler. This in turn has reduced her outbursts (Both physical and verbal) and has given her anymore independent and an emotionally stable/strong relationship with herself and everyone else. This is especially for those strong willed and emotionally intelligent/ sensitive children. To be honest, I even learned a lot about how to navigate adult relationships better. I learned a little bit (maybe more than I want to admit) about myself too. 10/10.
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Reviewed in the United States on June 11, 2025
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Louis Liu
Lowell, US
★★★★★ 5
After all, chidren are good inside.
Format: Kindle
Parenting is about how parents treat their kids. One important aspect of what counts for good parenting is how we face the kids’ negative behaviors. When we were children, our parents did not respect our emotional needs. They only scolded us when we were naughty. After we become parents, we treat our kids the way our parents treated us. Dr Becky proposes in this book, contrary to what our parents thought, children are all good inside and thus we should treat children’s bad behaviors as if their misbehaviors are signs that they don’t know how to express their needs. With this assumption, there are three implications for parenting. First, as children are good inside, what they do outside should not be our focus. Whether it is emotional tantrums, not listening, aggressive tantrums, sibling rivalry, rudeness and defiance, whining, lying, food habits, parents should not pay too much attention to it. Instead, parents should see the cause that contributes to the resulting negative behavior. Take whining as an example. Whining, according to a Cambridge dictionary, means ‘to make a long, high, sad sound’. As parents we are easily annoyed by whining and we quickly think that kids are disrespectful. In Dr Becky’s view, whining=strong desire+powerlessness. Children whine because they feel helpless and ‘indicate they feel alone and unseen in their desires’ (p.188), rather than because they are arrogant. What does this imply? Do we have to give in, knowing that they are desperate for connection and feeling powerful? The answer is no. Dr Becky said ‘while our job as parents is to make decisions that we feel are right for our kids even in the face of protest, we can still practice understanding and connecting’. While saying no, which they probably know they do need, at the same time we can give them the sympathy they also need. Thinking that kids are bad inside often leads to power struggles or arguments when we request them to request in an appropriate tone again. Kids are good inside, and thus we should focus our attention on how to respond to their helplessness rather than their whines. Secondly, not only should we not focus on their outside behavior, we should also be aware that what is on the surface often contrasts with what the kid feels inside. One of the most-feared emotions we are afraid to see children have is anger, also known as tantrums. When children are angry, they display undesirably violent behaviors such as hitting others. Dr Becky points out that they hit not because they are angry, but because they are scared. When we adults are afraid, we may also kill people if we are irrational. Children have not yet developed their prefrontal cortex which is responsible for logic and language, and so the most severe reaction they can possibly express is through tantrums. We may wonder why children are afraid: they are “terrified of the sensations, urges, and feelings coursing inside their body” (p.158) such as frustration and anxiety. These feelings which adults are used to feel scary to kids. Naming the right emotion is the first step to solving the problem and helping kids to cope with it. Only after we identify correctly the emotion the children are experiencing can we as parents exert the right method to deal with the out-of-control behavior. Clearly we know reprimanding our kids is not correct because “they are good inside”. To stop the kid's aggressive tantrums effectively, parents should assert their authority. Parents should show the confidence that they are in charge of the situation. Then, the next critical step is to maintain the kid's safety. Regardless of how the kid feels, the parent should stop the dangerous behavior the kid is engaging in, which Dr Becky calls containment. She says it best: “kids don’t feel good when they are out of control”. That we assert our authority and contain even though kids are not happy on the surface is an act of love, maturity, and responsibility. If we don't, not only will it cause injury, it will make children think we evade responsibility, thus making them feel more overwhelmed. To conclude, as parents we need to know our roles and our kids’ roles. Our job is to keep our children safe, both physically and psychologically. We need to remember that a gap exists between kids’ abilities to feel and their abilities to regulate their feelings, and the gap manifests as deregulated behavior. While it is children’s job to explore and express their feelings, it is our job to help them regulate them by setting physical boundaries, validating their emotions, and being empathetic to their feelings. We are our kids’ role models. We are demonstrating to our kids the emotion regulation skills. As our kids are allowed to shout and protest because they are doing their jobs, we are also allowed to upset them when we set boundaries. We just need to remember that to do our job well, we must learn to connect with and understand them more because after all, children are good inside.
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Reviewed in the United States on February 4, 2025
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RICHARD MERCER
Belleville, US
★★★★★ 4
Good read
Very good basic subjective author. Some modern therapist offer a different perspective on rewards and child behavior, but to be expected in academia. As with any behavioral psychology observable or behavioral science documents - measure the subjective amount against the scientific controlling evidence being offerred. If no evidence - it is just subjective opinion.
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Reviewed in the United States on March 7, 2026

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