Whether you are just looking for affordable rotors that look much more
appealing than stock or if you want to increase your BMW's braking performance,
StopTech direct replacement rotors are the perfect solution!
SportStop slotted, drilled, or drilled and slotted rotors from StopTech are a
great first upgrade for the original brake systems of your BMW, delivering
winning performance while meeting or exceeding original-equipment quality
specifications. SportStop rotors improve brake system performance by wiping away
the used friction material that otherwise accumulates between the rotor and pad.
This keeps fresh pad material more exposed to the rotor surface and promotes
more consistent braking performance.
What Do Drilled and Slotted Rotors Do?
- Clean and refresh the pad surface.
- Increase brake bite.
- Prevent gasses from collecting between the pad and rotor.
- Decrease unsprung weight and decrease rotational inertia.
- Improve braking ventillation and dissipate heat.
||SportStop Rotor Features
- Increased initial "bite" response.
- Improved wet weather response.
- Reduced pad glazing.
- OE Vane Designs, including casting part line location.
- Machining designs engineered for optimal rotor integrity.
- Double-disc ground for a consistent friction surface and better pad
- Mill-balanced for vibration-free performance.
- Black e-coating on non-friction surfaces provides lasting attractive
- Enhances open wheel appearance.
StopTech Rotor Technology
With so many different rotors on the market, its quite easy to be fooled by
inferior products that claim to be premium. Only StopTech rotors feature OE
Specs and production processes to meet QS and ISO Quality System Standards.
StopTech rotors utilize an Electrocoating finish that provides long lasting
corrosion protection. This coating is exclusive to StopTech and is
designed to withstand 400 hours of salt water exposure without rusting!
Inconsistencies on the friction surface area left by interior finishing
processes create potential noise and vibration issues. These rough finish
surfaces also prolong the pad-rotor break in period, diminishing braking power
which cause longer stopping distances.
||SportStop rotors feature a double disc ground, taper
free finish. Double disc grinding ensures parallelism, eliminates run
out and provides near perfect disc thickness variation. Double disc
grinding leaves a non-directional finish on the friction surface area
for more effective pad-rotor break in. This finish also provides quieter
and smoother stops.
Rough castings left behind by substandard manufacturing processes create balance
inconsistencies resulting in wheel vibration related noise. The lack of
mill-to-correct balancing only exacerbates these issues.
||SportStop rotors feature 100% fully machined finishes,
including rotor hats. This extra process provides better rotor balance
and creates a cleaner, more finished looking component. In addition, all
SportStop rotors are 100% inspected for balance, and mill corrected to a
tolerance of less than 20oz.-inch.
Side-split castings, while cheaper to produce, do not distribute heat
effectively. The result is that they transfer more heat to one side of the rotor
than the other, greatly diminishing braking power, especially in high-heat
||Original Equipment specification center-split core
casting provides proper heat transfer and thermal efficiency, resulting
in superior braking power and safety.