SKU: 38535963030

Stoptech Rear Gas-Slotted Rotors - E46 M3 | E39 M5 (328x20mm)

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Description

Stoptech Rear Gas-Slotted Rotors - E46 M3 | E39 M5 (328x20mm)Power Slot Rotors Power Slot rotors are 1 piece, slotted, direct replacement discs for your factory brake system and stock calipers. They offer improved cooling as well as other advantages the competition doesn't offer. Launched in 1998, Power Slot was the first premium slotted replacement rotor program in North America. Innovations include e coating, double disc grinding, full machining, mill balancing and center split castings, as well as the



Power Slot Rotors

Power Slot rotors are 1-piece, slotted, direct replacement discs for your factory brake system and stock calipers. They offer improved cooling as well as other advantages the competition doesn't offer. Launched in 1998, Power Slot was the first premium slotted replacement rotor program in North America. Innovations include e-coating, double-disc grinding, full machining, mill balancing and center-split castings, as well as the availability of directional vanes, cryogenic treatment and the use of Power Alloy. Today, Power Slot covers more than 2500 applications, all machined in Power Slot's California manufacturing center. Every Power Slot rotor is a direct replacement for a factory brake rotor, allowing the retention of factory calipers in the system.

Most Power Slot rotors match the original factory cooling vane design. In the most popular sports car and light truck applications, Power Slot has improved the design by using directional (left- and right-handed) vanes to improve cooling. This represents a distinct upgrade from the original equipment rotors, which usually feature a straight vane or pillar vane design. The directional vane is a more efficient air pump. The resulting increase in airflow translates into greater resistance to brake fade and faster recovery from temperature spikes generated by aggressive braking maneuvers.

Power Slot rotors feature a signature "short slot" design. The slot improves brake system performance by wiping away the debris of used friction material that otherwise accumulates between the rotor and pad. This keeps fresh pad material exposed to the rotor surface and helps prevent pad glazing. The edges sweeping the pad slightly increase the effective coefficient of friction, or "bite", amplifying brake system response to pedal input. By providing an escape path for water, slotted rotors can also improve initial brake response under wet conditions.

Every Power Slot rotor is finished with a black e-coating on both sides of the hat, inside the cooling vanes and on the outside edge. E-coating is a superior electro-statically applied finish designed to withstand 400 hours of salt water exposure without rusting. This is especially important on both mounting faces of the hat where it touches the hub flange and back face of the wheel. Any accumulation of rust in these areas can lead to installed lateral runout issues.

Power Slot rotors feature a double disc ground, taper free finish. Double disc grinding ensures parallelism, eliminates run out and provides near perfect disc thickness variation (DTV). Double disc grinding leaves a non-directional finish on the friction surface area for more effective pad and rotor break-in. This special finish also provides quieter and smoother stops.

Power Slot rotors feature 100 percent fully machined finishes including rotor hats. This extra process provides better rotor balance and creates a cleaner, more finished looking component.

Power Slot brake rotors are mill balanced to a tolerance of less than 2 oz-inch. This additional machining operation reduces feedback associated with rotor vibration and provides a smooth, confident application of braking force.

Center-split core castings provide proper heat transfer and thermal efficiency, resulting in superior braking power and safety.

Power Alloy metallurgy is another unique feature in many of Power Slot's rotors. Quality and performance live inside the rotor too. Choosing the correct foundry partner and working to improve the metallurgy are all part of Power Slot's continuous improvement process that helps to reach established targets for hardness and tensile strength. Many of Power Slot's top-selling part numbers are cast using this Power Alloy iron specification, an enhancement in the carbon and molybdenum content of the iron. Carbon and molybdenum promote crack resistance and improve noise, vibration and harshness (NVH).

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SKU: 38535963030

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MetalDread89
Boise, US
★★★★★ 1
Not an accurate book for a true spiritual seeker.
Format: Paperback
Don't waste your money. Once I read the 3rd eye may appear as the eye of Sauron from Lord of the rings, and all you have to do is cross your eyes and Boom there it is, I stopped wasting my time. All I received was a headace and major strain. After studying Kriya Yoga and what I've learned through the practices regarding the 3rd eye I just couldn't continue. You can read this in an hour or so. It's speaks of affirmations, mantras that's all good. If your just starting this journey I wouldnt recommend this. Look for books written by paramahansa yogananda, just my opinion and what worked miracles for me. This book was a gift or Id return. Again just my opion, if it helps you wonderful, I wouldn't pay .50 cents for this book.
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Reviewed in the United States on January 3, 2026
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Sean N.
Cuba, US
★★★★★ 5
quick and simple read, very grateful to Sage for writing this…
Format: Kindle
I have been curious about the 3rd Eye for some time and it is very cool that Sage has made accessing it this easy. I think I am getting closer to really seeing my 3rd Eye and I am excited by the possibilities! Thanks again, Sage.
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Reviewed in the United States on September 23, 2025
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Houston, US
★★★★★ 5
Packed with info.
Format: Paperback
Good informational book
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Reviewed in the United States on December 12, 2025
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J
Birmingham, US
★★★★★ 1
I can sum up this whole book in a single paragraph
Format: Paperback
Every other page is a stock picture from wherever; while the message and practice are helpful, this should have been a pamphlet instead of a book -remember Cliffsnotes? Look at the author photo in the back of the book and consider it for a moment, what does your gut tell you? Hopefully you too can glean something from it.
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Reviewed in the United States on December 12, 2025
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TheOracleFinder
Draper, US
★★★★★ 1
Not Worth The Money
Format: Paperback
ai garbage
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Reviewed in the United States on October 28, 2025

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