There’s a sound every car owner dreads. It’s not a loud bang or a dramatic clunk; it’s a subtle, insidious grinding noise that starts quietly and grows with each press of the brake pedal. For me, that sound began on my trusty 2017 Nissan Pathfinder, a vehicle that has reliably shuttled my family on everything from grocery runs to cross-country road trips. The rear brakes, after tens of thousands of miles, were finally crying uncle. The pedal felt a little soft, the stopping distances seemed a touch longer, and that faint metallic whisper was becoming a conversation. Ignoring it wasn’t an option. Worn brakes aren’t just an inconvenience; they are a critical safety failure waiting to happen. The search for a replacement wasn’t about performance upgrades or track-day glory; it was about restoring safe, reliable, and quiet stopping power for a daily-driven SUV without breaking the bank. This practical need is what led us directly to the doorstep of the Power Stop Autospecialty Rear Brake Kit Infiniti FX350 FX450 M37 M56 Q50 Q60 Q70 QX70 Murano Pathfinder Quest.
- Z17 Evolution Rear Brake Pad and Rotor Kit Includes 2x Rear Autospecialty Stock Replacement Rotors + 1 Rear Z17 Ceramic Brake Pad Set with Hardware
- Z17 Stock Replacement brake kit is recommended for drivers looking to refresh their daily driven vehicle's stopping power back to OE, stock performance
What to Consider Before Buying a Brake Kit
A brake kit is more than just a collection of metal and friction material; it’s a key solution for restoring one of your vehicle’s most critical safety systems. It provides peace of mind, renewed vehicle performance, and the confidence that your car will stop precisely when you need it to. The primary benefit of an all-in-one kit is convenience and component matching. Instead of hunting down rotors from one brand and pads from another, a kit ensures that the parts are engineered to work together, theoretically optimizing performance and simplifying the installation process for both professional mechanics and ambitious DIYers.
The ideal customer for this type of OE-replacement product is someone facing the exact scenario I was: a daily driver needing to replace worn-out factory brakes. They prioritize value, reliability, and a return to stock (or slightly better) performance. They are not looking for the aggressive bite and high-temperature resilience of a track-focused setup. Conversely, this kit might not be suitable for those who engage in frequent towing, live in mountainous regions requiring constant heavy braking, or are performance enthusiasts seeking a significant upgrade in stopping power and thermal capacity. For those users, a drilled and slotted rotor kit with a more aggressive pad compound would be a more appropriate, albeit more expensive, alternative.
Before investing, consider these crucial points in detail:
- Fitment & Compatibility: This is the most critical factor. A brake kit is useless if it doesn’t fit your exact vehicle sub-model. Many vehicles, like the Infiniti M-series, offer “sport” and “non-sport” packages with different brake sizes. Always double-check your vehicle’s specifications against the kit’s compatibility list. An exact fit ensures a safe, hassle-free installation.
- Performance Level: Understand the difference between an OE (Original Equipment) replacement and a performance upgrade. The Power Stop Autospecialty Rear Brake Kit Infiniti FX350 FX450 M37 M56 Q50 Q60 Q70 QX70 Murano Pathfinder Quest is an OE replacement, designed to mimic or slightly exceed factory performance with an emphasis on quiet, low-dust operation for everyday driving. Performance kits use drilled or slotted rotors for better heat and gas dissipation and more aggressive pad compounds for a stronger initial bite.
- Materials & Durability: The materials dictate the kit’s lifespan and characteristics. The Z17 ceramic pads in this kit are designed for low noise and minimal dust. The rotors, however, are where things get tricky. The biggest variable in rotor durability, especially in wet or winter climates, is the presence of a protective coating. Uncoated rotors are highly susceptible to rust, whereas rotors with zinc or Geomet coatings offer significantly better corrosion resistance.
- Ease of Use & Maintenance: A complete kit should contain everything needed for the job: rotors, pads, new hardware clips, and high-temp lubricant. This simplifies the process. Post-installation, proper “bedding-in” of the new pads and rotors is crucial for optimal performance, noise prevention, and longevity. This involves a specific series of accelerations and braking to properly mate the pad and rotor surfaces.
Keeping these factors in mind, the Power Stop Autospecialty Rear Brake Kit Infiniti FX350 FX450 M37 M56 Q50 Q60 Q70 QX70 Murano Pathfinder Quest stands out in several areas, particularly its value and completeness. You can explore its detailed specifications and confirm vehicle fitment here.
While the Power Stop Autospecialty Rear Brake Kit Infiniti FX350 FX450 M37 M56 Q50 Q60 Q70 QX70 Murano Pathfinder Quest is an excellent choice for a specific type of buyer, it’s always wise to see how it stacks up against the competition. For a broader look at all the top models, we highly recommend checking out our complete, in-depth guide:
- Compatible: Please CHECK the Product Description and Fitment Chart--AMAZONCONFIRMEDFIT on the top left, year & model is not enough, check more details.
- Fits: 2015 TOYOTA TUNDRA MFG After 8/2015| 2015 TOYOTA TUNDRA MFG Up To 8/2015| 2016 2017 2018 2019 2020 2021 TOYOTA LAND CRUISER| 2016 2017 2018 2019 2020 2021 LEXUS LX570|
- Fits: 2007 2008 2009 2010 2011 2012 2013 2014 2015 2016 2017 JEEP WRANGLER | 2018 JEEP WRANGLER JK
First Impressions: A Complete Kit Promising an Easy Fix
The kit arrived in a single, heavy box weighing in at 28 pounds. Inside, the components were securely packaged. The two Autospecialty OE Stock Replacement rotors were substantial, with a clean, machined surface. The Z17 Evolution Plus ceramic pads were neatly boxed, accompanied by a full set of stainless steel hardware clips and a small packet of ceramic brake lubricant. This all-in-one approach is a huge plus for any DIYer. Having every necessary component on hand prevents that dreaded mid-job trip to the auto parts store. At first glance, the quality seemed solid for the price point. The rotors had a non-directional finish, and the pads featured factory-style shims to help dampen noise. There were no obvious manufacturing defects, and everything looked ready for a direct, bolt-on installation. Compared to buying parts individually, the value proposition was immediately apparent. The initial impression was one of competence and convenience, setting the stage for what we hoped would be a straightforward and successful brake job.
Key Benefits
- Excellent value proposition; often cheaper than buying rotors alone
- Complete kit includes rotors, ceramic pads, hardware, and lube
- Z17 Evolution ceramic pads offer quiet operation and low dust
- Direct bolt-on design ensures perfect OE-spec fitment
Limitations
- Rotors are extremely prone to rapid and excessive rusting
- Rust build-up can lead to squealing noises, especially after sitting
A Deep Dive into the Power Stop KOE2427’s Real-World Performance
A brake kit’s true worth isn’t determined on a workbench but on the road, through thousands of stops in varying conditions. Our in-depth testing of the Power Stop Autospecialty Rear Brake Kit Infiniti FX350 FX450 M37 M56 Q50 Q60 Q70 QX70 Murano Pathfinder Quest revealed a product of stark contrasts—a story of excellent fit and initial performance overshadowed by a significant, long-term flaw.
Installation and Fitment: A Flawless Bolt-On Experience
The single best attribute of this kit is, without a doubt, its precision fitment. Working on our 2017 Nissan Pathfinder (a compatible model), the installation was as smooth as one could hope for. After removing the old, worn components, the new Power Stop Autospecialty rotors slid perfectly onto the hub with no modifications needed. The dimensions were an exact match to the original equipment. The same held true for the Z17 ceramic pads; they dropped into the caliper brackets effortlessly. Perhaps most impressively, the included stainless steel hardware kit was a perfect duplicate of the factory clips. This is an area where many aftermarket kits cut corners, providing generic or ill-fitting hardware that can cause rattles or improper pad movement. That was not the case here. Every clip snapped securely into place. This attention to detail on fitment aligns with feedback from other users, many of whom noted the “exact fit” on their specific vehicles, from an Infiniti M35h to a Pathfinder. For a DIY mechanic, this is a massive confidence booster. It transforms a potentially frustrating job into a straightforward, predictable process, fulfilling the “bolt-on replacement” promise to the letter.
Braking Performance and Pad Quality: The Z17 Ceramic Advantage
Once installed, the next crucial step is the bedding-in process. We followed Power Stop’s recommended procedure: a series of moderate-to-aggressive stops from 40 mph down to 10 mph, followed by a cool-down period. This process transfers an even layer of friction material from the pads to the rotors, ensuring smooth, quiet, and effective braking. Right away, the quality of the Z17 Evolution Plus ceramic pads became evident. The initial bite was firm yet predictable, feeling very similar to the factory pads but with a slightly smoother engagement. In daily driving conditions—navigating city traffic, cruising on the highway, and making routine stops—the performance was commendable. There was no brake fade during normal use, and the stopping power felt consistent and reliable. Most notably, the pads lived up to their low-dust and low-noise claims. Over the first few weeks of testing, our wheels remained remarkably clean, a stark contrast to the dust-heavy semi-metallic pads of the past. The operation was whisper-quiet, with no squeals, groans, or chatter. For a daily driver, this is exactly what you want: brakes that work effectively and invisibly in the background. If the review ended here, this kit would be an unqualified recommendation.
The Elephant in the Room: Rapid and Severe Rotor Corrosion
Unfortunately, the story takes a sharp turn after the first encounter with wet weather. A week after the pristine installation, our region got its first significant rainstorm. The next morning, we were shocked by the appearance of the rotors. While a light layer of rust on the swept area of a cast iron rotor is normal after being wet, this was far more extreme. The entire rotor hat, the cooling vanes, and any part of the rotor not in direct contact with the pad were covered in a layer of bright orange rust. This wasn’t a minor discoloration; it was a complete corrosion bloom that made brand-new brakes look years old. This experience was not an anomaly; it’s the most common and severe complaint from other users. One noted they were “Completely rusted after the first time driven in rain,” while another shared pictures of their 6-month-old rotors looking terrible on an “otherwise spotless SUV.”
This cosmetic issue quickly became a performance nuisance. Every morning, or any time the Pathfinder sat for more than a few hours in humid conditions, the first few brake applications would be met with a loud squeal as the pads scraped off the fresh layer of rust on the friction surface. The noise would disappear after a few stops, but it was an annoying daily ritual. The root cause is clear: these Autospecialty rotors lack any meaningful anti-corrosion coating. More premium rotors are often electro-coated (e-coated) or plated with zinc or other materials to protect the non-contact surfaces from the elements. The absence of such a coating on the Power Stop Autospecialty Rear Brake Kit Infiniti FX350 FX450 M37 M56 Q50 Q60 Q70 QX70 Murano Pathfinder Quest is a critical cost-saving measure that severely compromises the product’s long-term appearance and noise performance. For anyone living in a climate with rain or snow, this is a major drawback that is difficult to overlook. If you’re looking for a brake solution that will continue to look and perform its best for years to come, we strongly suggest you investigate options with superior corrosion protection.
What Other Users Are Saying
Our findings are strongly corroborated by the broader user experience. The sentiment is sharply divided, almost universally split along the lines of performance versus durability. On the positive side, many users praise the kit’s value and fitment. Comments like “Nice product in really great price” and “The rotors were an exact fit on my 2013 Infiniti M35h” are common, confirming our positive installation experience. The affordable price, often lower than buying just the rotors from a local auto parts store, is a significant draw for many.
However, the praise often comes with a significant caveat, or is followed by a negative update. The issue of premature and excessive rust is the dominant theme in critical feedback. One user stated, “I’ve only had them installed for a little a week and they are starting to rust.” Another reported, “Bad quality, got rusted and squick after 2 weeks only.” This aligns perfectly with our own testing, where the aesthetic and noise degradation began almost immediately after the first exposure to moisture. It paints a clear picture of a product that performs its primary function well but fails on the crucial secondary aspects of longevity and refinement.
How Does the Power Stop KOE2427 Compare to the Alternatives?
When considering the Power Stop Autospecialty Rear Brake Kit Infiniti FX350 FX450 M37 M56 Q50 Q60 Q70 QX70 Murano Pathfinder Quest, it’s essential to understand its place in the market. It’s a budget-friendly, OE-style replacement. How does it stack up against other options?
1. Power Stop K137-36 Front Brake Kit
- Fits: 2005 2006 2007 2008 2009 2010 2011 2012 2013 2014 2015 TOYOTA TACOMA 6 Lug Wheels| 2003 2004 2005 2006 2007 2008 2009 TOYOTA 4RUNNER Models w/ 319mm (12.56") Front Rotors| 2007 2008 2009 2010...
- Fits: 2016 2017 2018 2019 2020 2021 2022 2023 TOYOTA TACOMA
This is Power Stop’s own step-up offering, the Z36 Truck & Tow kit. The key difference is its design for heavier-duty applications. It features drilled and slotted rotors for superior heat dissipation and carbon-fiber ceramic pads for increased stopping power under load. This kit would be the superior choice for someone who frequently tows with their Pathfinder or 4Runner, or for the enthusiast who wants a more aggressive brake feel and appearance. While it comes from the same brand, it’s a completely different class of product aimed at performance enhancement rather than simple OE replacement. It costs more, but it provides tangible benefits for demanding situations that the Autospecialty kit is not designed for.
2. Power Stop KOE098 Rear Brake Pads and Rotors Kit
- Z17 Evolution Rear Brake Pad and Rotor Kit Includes 2x Rear Autospecialty Stock Replacement Rotors + 1 Rear Z17 Ceramic Brake Pad Set with Hardware
- Z17 Stock Replacement brake kit is recommended for drivers looking to refresh their daily driven vehicle's stopping power back to OE, stock performance
This kit is the direct equivalent of the KOE2427 we reviewed, but designed for a different set of vehicles, primarily Nissan sedans like the Altima and Maxima. Comparing them highlights the consistency of Power Stop’s Autospecialty line. You can expect the same benefits—great fitment, a complete component package, and quiet, low-dust ceramic pads. However, it’s reasonable to assume it also shares the same primary weakness: rotors without a protective anti-corrosion coating. A buyer considering this kit for their Sentra should expect the same value proposition and the same potential for rapid rusting as we found with our Pathfinder kit. It’s a good choice for a budget-conscious sedan owner in a dry climate.
3. Detroit Axle Front Brake Kit Drilled & Slotted Rotors Ceramic Pads
- Measurement: Fits Models with 12.99 inch (330mm) Front Rotor Size
- Brake Kit Replacement for 2008-2020 Cadillac Escalade - [2008-2020 Cadillac Escalade ESV] - 2008-2013 Cadillac Escalade EXT - [2013-2019 Cadillac XTS (6 Stud Wheels; Heavy Duty Brakes)] - 2008-2009...
Detroit Axle is another brand known for offering value-focused aftermarket parts. This particular kit serves as a direct competitor to Power Stop’s higher-end performance lines. It offers the aesthetic and potential thermal benefits of drilled and slotted rotors, paired with ceramic pads. For a vehicle owner looking for a visual upgrade without the premium price of brands like Brembo or EBC, this is a compelling option. The key question for a buyer cross-shopping with our reviewed Power Stop kit would be build quality and rotor coating. If this Detroit Axle kit includes rotors with better rust protection, it could be a superior alternative for those wanting a performance look and better longevity, even if it’s not a direct OE-style replacement.
Our Final Verdict: A Compromised Value
The Power Stop Autospecialty Rear Brake Kit Infiniti FX350 FX450 M37 M56 Q50 Q60 Q70 QX70 Murano Pathfinder Quest is a frustrating product to review. On one hand, it delivers on its core promises: it provides everything you need in one box, fits perfectly, and the included Z17 ceramic pads offer excellent, quiet, low-dust performance for daily driving. For the price, the initial stopping power and ease of installation are hard to beat. However, this is all catastrophically undermined by the poor quality of the rotors’ corrosion resistance. The speed and severity with which they rust is not just a cosmetic flaw; it introduces noise and significantly degrades the overall quality perception of the product.
We can only recommend this kit under very specific circumstances: if you are on the tightest of budgets and absolutely need a complete kit, or if you live in an arid, desert climate where rain and humidity are non-issues. For everyone else, especially those who experience seasons and care about the appearance and long-term quiet operation of their vehicle, the cost savings are not worth the compromise. The better investment would be to spend slightly more on a kit from Power Stop’s own lineup (like their e-coated series) or another brand that features properly coated rotors. The foundation of a good product is there, but the execution on the rotors is a critical failure.
If you’ve decided the Power Stop Autospecialty Rear Brake Kit Infiniti FX350 FX450 M37 M56 Q50 Q60 Q70 QX70 Murano Pathfinder Quest is the right fit for your specific needs and budget, you can check its current price and purchase it here.
Last update on 2025-10-16 / Affiliate links / Images from Amazon Product Advertising API