ECS Tuning Rear Big Brake Kit - Stage 1 - 2-Piece Tru-Float Scalloped Rotors (330x22)

When adding more horsepower to your vehicle, it is imperative that you have a way to slow that power down and bring your vehicle to a stop. One way to do that is to upgrade to larger brake rotors. Aftermarket big brake kits can put a damper on your budget and offer questionable quality. Upgrade your stopping the factory way with a big brake kit from ECS Tuning.

ECS Tuning has assembled this kit to upgrade the braking on your vehicle while using quality ECS 2-piece Tru-Float Cross Drilled & Slotted Wave rotors with OEM components. The components of this allow you to run the larger 330x22mm brake rotor. The combination of a larger rotor and calipers moved outward will offer a dramatic upgrade in stopping power. Our 2-Piece Tru-Float Wave Rotors rotors combine the advantages of weight savings and rapid heat dissipation to provide a rotor superior to stock while preventing warping and extending component life.

Key Features of the ECS Tru-Float Wave Rotors:

• Weight savings:
  • The B8 S4/S5 ECS 2-Piece Tru-Float wave rotors weigh only 17.8 lbs each, compared to the stock rotor at 24.5 lbs. The lighter 2-piece rotor reduces unsprung weight and rotational inertia, improving suspension performance.
  • The unique wave pattern further reduces weight at the outer most portion of the rotor, reducing both unsprung weight and more importantly the rotational inertia of the rotor, further improving acceleration and braking performance compared to a non-wave design.
  • Lightweight, precision machined 6061-T6 aluminum hat, which is hard anodized with an attractive matte black finish that is both durable and corrosion resistant.
• Gray cast iron rings:
  • High quality FC-30 cast iron with a high carbon content improves wear properties at elevated temperatures and has excellent thermal conductivity as well as vibration damping properties.
  • Friction surfaces are precision ground to ensure parallel surfaces and improve pad bed in, then assembled rotors are precision balanced for vibration free operation.
  • Heat treating reduces the tendency for rotor cracking by reducing internal rotor stresses.
• Durability:
  • Non-friction ring surfaces, including internal vents, are painted to resist salt and other corrosives.
• Tru-Float design:
  • The full float design allows independent radial and lateral thermal expansion and movement. Both of these features reduce thermal stresses on the rotor due to uneven thermal loading under hard braking.
  • The design of our rotor hat conducts less heat into the bearings due to the reduced contact area between the rotor and the hat, improving bearing life.
  • The radial expansion capacity allows the ring to increase in diameter without being restrained by the hat, reducing the tendency to “cone” or distort toward the outer braking surface, which improves pedal feel and pad wear characteristics
  • The lateral float capability allows the rotor to self-center between the pads, improving pad wear and reducing drag. It also reduces the effects of pad knock back, which is the tendency of the rotor to push the pistons back in to the calipers due to wheel bearing deflection under extreme loading, resulting in a soft pedal and inconsistent braking. Reducing or eliminating knock back by allowing lateral float results in a more consistent pedal feel and braking
• Improved cooling:
  • ECS 2-Piece rotors feature side-specific directionally curved veins which pump air through the rotor at a higher velocity, leading to consistent, rapid cooling on both sides equally.
  • Conventional B8 S4/S5 rotors are curved-veined, but use the same rotor for both sides of the vehicle. This compromise inefficiently pumps air from the outer diameter to the inner diameter of one rotor, working against the natural centrifuge effect. This significantly reduces air flow and thermal conductivity on one side of the vehicle, resulting in uneven braking cooling and performance from side to side.
  • Rotor rings feature 48 veins compared to 45 on the stock rotors and feature a whopping 55% increase in internal surface area to further improve cooling efficiency compared to the stock rotors.
• Drilled and slotted:
  • 2-Piece Tru-Float rotors are cross drilled to promote cross ventilation for improved cooling as well as slotted to clean brake pads and carry away water and brake dust. Cleaner brake pads result in faster, more consistent stopping.
  • Drilled holes are chamfered while slots are machined with a ball end mill - both to prevent cracking that may be present on improperly machined rotors.
• Manufacturing quality:
  • Designed and tested in-house by ECS Tuning's leading team of engineers
  • Manufactured exclusively for ECS Tuning in an ISO 9001 certified facility

This kit comes with the following components:

• ECS 2-Piece Cross Drilled & Slotted Rotors
• OEM S4/S5 Calipers
• OEM S4/S5 Caliper Carriers
• OEM S4/S5 Splash Shields
• OEM Caliper Carrier Bolts (4)
• Stainless Steel Rotor Set Screw (2)

*This kit does not include a brake pad set so you can decide which pads best suit your needs.