Reduce heat. Reduce warping. Full Floating.
ECS Tuning engineered 2-Piece Tru-Float scalloped style rotors offer real world benefits that can be felt on both the street and track! Our direct fit 2-Piece Tru-Float rotors provide rapid heat dissipation for a rotor superior to stock that prevents warping and extends component life, weighing in at a mere 13.20 lbs each. All-around improvement in one performance minded package.
FEATURES:
o Weight savings: The B9 S4/S5 Rear ECS 2-Piece rotors weigh only 13.20 lbs each, compared to the stock rotor at 16.5 lbs. The reduced weight of a 2 piece rotor reduces un-sprung weight and rotational inertia, improving braking and suspension performance.
o Corrosion resistant coated hardware
o Lightweight, precision machined 6061-T6 aluminum hat hard anodized with an attractive matte black finish that is both durable and corrosion resistant.
o The full float design allows independent radial thermal expansion and movement, reducing thermal stresses on the rotor due to uneven thermal loading under hard braking.
o The radial expansion 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, improving pedal feel and pad wear characteristics.
o Gray cast iron rings: High quality FC-30 cast iron with high a carbon content improves wear properties at elevated temperatures and has excellent thermal conductivity and vibration damping properties. Friction surfaces are precision ground to ensure perfectly parallel surfaces and improve pad bed in, and rotors are precision balanced for vibration free operation. Heat treating reduces the tendency for rotor cracking by reducing internal rotor stresses.
o Durability: Non-friction ring surfaces, including internal vents, are coated with a high temp paint to resist salt and other corrosives.
o Slotting reduces the effects of pad glazing that often results from extremely high temperatures by continually cleaning the pad surface, resulting in 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.
o Manufacturing quality: Manufactured exclusively for ECS Tuning in an ISO 9001 certified facility
IMPROVED COOLING:
o Heat convection (due to air flow) is considered the most important mode of heat dissipation in rotor design. The key to this is adequate air flow through the rotor.
o ECS 2-Piece rotors feature side-specific directionally curved vanes which pump air through the rotor at a higher velocity, leading to consistent, rapid cooling on both sides equally.
o The air velocity in curved vane rotors is higher than pillar-post rotors and straight vane rotors, and as such curved vane rotors have been shown to cool more effectively.
o Conventional B9 S4/S5 rear rotors have a pillar-post vane design which do not pump air through the rotor as effectively and as such have inferior cooling capacity in comparison.
o Drilled and slotted: ECS 2-Piece 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.
TESTING:
o ECS 2 piece rotors have been subjected to thousands of miles of hard street use and to the elements (including snow and salt) for years. They have also been subjected to scientific brutal stress testing on the track and brake dyno, performing countless high speed stops in quick succession. We have measured stopping distances and elevated rotor temperatures of over 1000*F for long sustained periods (to the point of rotor bluing and catching brake pads on fire), as well as subjecting rotors to careful post-test inspection for signs of irregular wear, warping, stress cracking, or any other signs of failure.
o Our rotors have proven themselves to be robust, demonstrating excellent wear characteristics, no warping, no thermal stress cracking, no signs of hot spots and minimal pad glazing.
Ready for a replacement rotor set? ECS offers discounts on pairs of replacement rotors to the original customer or customers showing proof of ownership. Please contact the Sales Department for additional information.
Please read before ordering. Eurosport Performance does not carry live inventory on this site. Most products are ordered for you directly from the manufacturer or our suppliers, and we follow their lead times. Placing an order confirms you have read and accepted the availability terms below.
| In stock
Ships within 24 to 48 hours
Products marked in stock are on our shelves in Montreal and leave within one to two business days.
|
Ordered for you
Most orders ship in 5 to 7 business days
Everything else is ordered from the manufacturer or supplier when you order. Delays can occur; if they do, we contact you.
|
|
Supplier lead times apply
If a product is not listed as in stock here and is on backorder at the manufacturer, it will most likely be on backorder for us too. We will tell you as soon as we know.
|
We keep you informed
You receive a confirmation when the order is placed, a notice if a delay comes up, and tracking the moment it ships.
|
Only products explicitly marked in stock are on our shelves. For everything else, the fastest way to know the current lead time is to ask us before you order; we check with the supplier and reply with a date.
Confirmed means we have placed the order with the manufacturer or supplier on your behalf. Shipping follows once the part reaches us or ships directly to you, usually within 5 to 7 business days for products that are available at the source.
We tell you as soon as the supplier confirms it, with the expected date when they give one. You can keep the order open, switch to an alternative we suggest, or cancel for a full refund before the part ships.
Yes. Any order that has not shipped can be cancelled by contacting us, and the refund goes back to your original payment method. Please contact us rather than opening a dispute with your bank: a cancellation takes us minutes, a chargeback takes weeks and freezes the refund in the meantime.
Sometimes. Larger or special-order items can ship to you directly from the supplier to save days in transit. You still receive tracking from us either way.
Orders ship from Montreal or directly from our suppliers. For Canadian addresses the price you pay is the price, with no import or duty fees added on delivery. See our shipping policy for details.
You get an email with the tracking number the moment the label is created, and you can follow the order in your account on the site or in the SPECD app.
Want a lead time before you order? Email us or use the contact page with the product name and your vehicle, and we will confirm availability with the supplier.
Products are warrantied by their manufacturer. Eurosport Performance is an authorized reseller: every part we sell is covered by the manufacturer's own warranty, with its own terms and duration. Claims go through us, so you deal with Eurosport Performance rather than a form on the brand's site, but whether a claim is accepted is the manufacturer's decision.
|
Manufacturer terms apply
Duration and coverage are set by the brand and differ from one to the next: some cover one year, some a lifetime, some only the original purchaser. The brand's warranty page is the reference; ask us if you cannot find it.
|
We file the claim for you
Contact us with your order number, photos and a description of the issue. We open the claim with the manufacturer, follow it up, and arrange the repair, replacement or credit they approve. The manufacturer decides whether the claim is accepted.
|
|
Fitment guarantee: North America only
We guarantee fitment for vehicles sold in the North American market. Vehicles from other markets are out of scope; specifications differ, and it is the customer's responsibility to confirm compatibility before ordering.
|
No warranty on tuning files
ECU and TCU tunes and other software files are sold without warranty and are not returnable once delivered or flashed. Tuning can affect your vehicle's factory warranty; please read the brand's terms before purchasing.
|
|
Proof of purchase
Your Eurosport Performance order is the proof of purchase every manufacturer asks for. Keep the order confirmation; it is also in your account on the site and in the SPECD app.
|
What is usually not covered
Damage from improper installation, modification, abuse, racing or an incorrect application for the vehicle, and normal wear items such as pads, clutch discs and filters. Shipping and labour are covered only when the manufacturer's terms say so.
|
It is the manufacturer's warranty for that product. Where the brand publishes it, we note it in the description; otherwise contact us before ordering and we will confirm the exact terms with them.
Stop using it if it is a safety-related part, then contact us with your order number, clear photos, and when and how the issue appeared. Do not return anything until we confirm the claim; manufacturers often require an inspection or an authorization number first.
The manufacturer. We prepare and submit the claim, provide the proof of purchase and push for a fair outcome, but acceptance, replacement or credit is their call under their terms. We pass their decision on to you as soon as we have it.
It depends on the manufacturer. Simple cases are approved in days; claims that need the part inspected can take a few weeks. We keep you updated at each step and push when it drags.
No. Tuning files are software; once delivered or flashed they cannot be returned, and they carry no warranty from Eurosport Performance or, in most cases, from the tuner. Support for the tune itself (revisions, flashing questions) comes from the tuning brand under its own terms.
No. Our fitment guarantee covers vehicles sold in the North American market only. European, Japanese and other market vehicles can differ in engines, electronics and dimensions, and a part listed for the North American model is not guaranteed to fit. If you order for one of these vehicles, confirming compatibility is your responsibility, and fitment issues on such vehicles are not covered by returns or warranty.
Labour is not covered unless the manufacturer's terms specifically include it. Having the part installed by a qualified shop protects your claim: improper installation is the most common reason a manufacturer declines.
No. Returns cover unused parts you no longer want, under our refund policy. Warranty covers a part that fails in use, under the manufacturer's terms. If you are unsure which applies, contact us and we will point you to the right one; please do not open a bank dispute, as it pauses both processes.
Questions about coverage before you buy? Email us with the product and your vehicle and we will confirm the manufacturer's terms.
