{"product_id":"audi-a5-s5-rs5-b9-akebono-9n-400mm-ccb-kit","title":"2017-2024 Audi A5 \/ S5 \/ RS5 (B9) CCB Big Brake Kit | Akebono 9N 6-Piston","description":"\u003cdiv class=\"sfx\"\u003e\n\u003csection class=\"box red\"\u003e\u003ch2\u003e2017-2024 Audi A5 \/ S5 \/ RS5 (B9) CCB Big Brake Kit — Genuine Akebono OEM Audi RS 6-Piston (9N) Caliper Front + TTSPORT EP4 4-Piston Caliper with EPB Rear Setup\u003c\/h2\u003e\n\u003cp\u003eB9 Audi A5, S5, and RS5 owners shop this kit when the factory iron setup adds dust and heat load, or when OEM carbon-ceramic service cost makes a complete matched replacement more logical. StopFlex pairs a 400mm front carbon-ceramic rotor with the Genuine Akebono OEM Audi RS 6-Piston (9N) Caliper, then matches the rear with a TTSPORT EP4 4-Piston Caliper with EPB on a 380mm carbon-ceramic rotor. The result is higher thermal capacity, lower rotating mass than comparable iron hardware, reduced brake dust, and fitment built around the exact B9 trim instead of a platform-wide assumption.\u003c\/p\u003e\n\u003cul class=\"check\"\u003e\n\u003cli\u003e\u003cspan\u003e400mm front carbon-ceramic rotor requires 20-inch or larger wheels on the 2017-2024 Audi A5 \/ S5 \/ RS5 B9; wheels under 20 inches will not clear the package, and spoke clearance still must be checked.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eFront braking is based on the Genuine Akebono OEM Audi RS 6-Piston (9N) Caliper, selected for owners who want an OEM-derived Audi RS caliper rather than a generic aftermarket front caliper.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eRear braking uses a 380mm carbon-ceramic rotor with the TTSPORT EP4 4-Piston Caliper with EPB, so the B9’s electronic parking-brake function is retained while rear thermal capacity is increased.\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\u003c\/section\u003e\u003csection class=\"box red\"\u003e\u003ch2\u003eFitment Hard Lines\u003c\/h2\u003e\n\u003cdiv class=\"scroll\"\u003e\u003ctable\u003e\n\u003ctr\u003e\n\u003cth class=\"accent\"\u003eField\u003c\/th\u003e\n\u003cth\u003eSpecification\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eVehicle\u003c\/td\u003e\n\u003ctd\u003eAudi A5 \/ S5 \/ RS5 (B9)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eModel years\u003c\/td\u003e\n\u003ctd\u003e2017-2024\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFront setup\u003c\/td\u003e\n\u003ctd\u003eGenuine Akebono OEM Audi RS 6-Piston (9N) Caliper \/ 400mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRear setup\u003c\/td\u003e\n\u003ctd\u003eTTSPORT EP4 4-Piston Caliper with EPB \/ 380mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePage type\u003c\/td\u003e\n\u003ctd\u003eComplete CCB kit upgrade\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMinimum wheel size\u003c\/td\u003e\n\u003ctd\u003e20\" (for the 400 mm front rotor)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\u003c\/div\u003e\n\u003cdiv class=\"sf-emph\"\u003e\u003cp\u003eEvery StopFlex kit is bespoke-engineered for your exact model and trim — the brackets, rotor-hat offsets, and caliper mounting are matched to your specific car, not assumed from the platform. This matters because trims that share a chassis name can differ mechanically: a pure M or performance variant often carries different front knuckles\/uprights, hub geometry, and wheel axial (ET) clearance than the standard models in the same family, so a bracket and hat offset that bolt onto one are not the same parts that fit the other. StopFlex supplies the calipers, pads, rotor hats, floating hardware, and brake lines as a matched system built to your confirmed trim. Cars with modified knuckles, modified uprights, or non-factory suspension mounting points must be reviewed before ordering and are not treated as direct-fit.\u003c\/p\u003e\u003c\/div\u003e\n\u003cp\u003eThis setup uses a 400 mm front rotor, so the minimum wheel size is 20\". Wheels under 20\" will not clear the caliper and rotor, and spoke profile and offset affect clearance too — confirm your exact wheels before ordering.\u003c\/p\u003e\n\u003cdiv class=\"scroll\"\u003e\u003ctable\u003e\n\u003ctr\u003e\n\u003cth class=\"accent\"\u003eWheel Size (Standard)\u003c\/th\u003e\n\u003cth\u003eDisc Range\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e15\"\u003c\/td\u003e\n\u003ctd\u003e260 mm – 285 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e16\"\u003c\/td\u003e\n\u003ctd\u003e285 mm – 300 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e17\"\u003c\/td\u003e\n\u003ctd\u003e300 mm – 330 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e18\"\u003c\/td\u003e\n\u003ctd\u003e330 mm – 355 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e19\"\u003c\/td\u003e\n\u003ctd\u003e355 mm – 380 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e20\"\u003c\/td\u003e\n\u003ctd\u003e380 mm – 400 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e21\"\u003c\/td\u003e\n\u003ctd\u003e400 mm – 420 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e22\"\u003c\/td\u003e\n\u003ctd\u003e420 mm – 440 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\u003c\/div\u003e\u003c\/section\u003e\u003csection class=\"box\"\u003e\u003ch2\u003eCaliper Overview — Front \u0026amp; Rear Balance\u003c\/h2\u003e\n\u003cdiv class=\"grid g2\"\u003e\n\u003cdiv class=\"card\"\u003e\n\u003ch3\u003eFront Caliper (Primary Upgrade)\u003c\/h3\u003e\n\u003cp\u003eThe primary front upgrade is the Genuine Akebono OEM Audi RS 6-Piston (9N) Caliper, a six-piston fixed caliper that spreads pad load more evenly across the 400mm rotor face for stronger clamp control and a more stable pedal under repeated braking. Its credibility comes from being a genuine OEM-derived Audi RS caliper, not a renamed universal caliper, and it is paired here with StopFlex carbon-ceramic rotors, hats, pads, hardware, and lines engineered for the confirmed B9 trim.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"card\"\u003e\n\u003ch3\u003eRear Caliper (Balance)\u003c\/h3\u003e\n\u003cp\u003eThe rear axle uses the TTSPORT EP4 4-Piston Caliper with EPB on a 380mm carbon-ceramic rotor to add real rear thermal capacity and help keep the car settled under hard braking. The EP4 uses four hydraulic service pistons for braking plus a dedicated EPB actuator piston, preserving the factory electronic parking-brake function.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"sf-emph\"\u003e\u003cp\u003e\u003cstrong\u003eFront \u0026amp; rear, engineered together:\u003c\/strong\u003e This kit is engineered as a front-and-rear system so the 400mm Akebono front package and 380mm EP4 rear package are matched for rotor diameter, caliper mounting, hat offset, and hydraulic behavior on the specific A5, S5, or RS5 B9 trim. That matters because a front-only conversion can shift brake bias and thermal load without giving the rear axle the capacity or EPB integration needed for a balanced street and track setup.\u003c\/p\u003e\u003c\/div\u003e\u003c\/section\u003e\u003csection class=\"box\"\u003e\u003ch2\u003eMake It Yours — Color \u0026amp; Logo Customization\u003c\/h2\u003e\n\u003cdiv class=\"sf-emph\"\u003e\n\u003cp\u003eEvery StopFlex kit-upgrade order can be finished with \u003cstrong\u003ecustom caliper colors\u003c\/strong\u003e, a \u003cstrong\u003ecustom caliper logo\u003c\/strong\u003e, and \u003cstrong\u003ecustom rotor hat colors\u003c\/strong\u003e, so the brake package matches your exact build instead of a fixed off-the-shelf look.\u003c\/p\u003e\n\u003cul class=\"check\"\u003e\n\u003cli\u003e\u003cstrong\u003eCustom caliper color\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eCustom caliper logo\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eCustom rotor hat color\u003c\/strong\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\u003c\/section\u003e\u003csection class=\"box\"\u003e\u003ch2\u003eWhy StopFlex CCB\u003c\/h2\u003e\n\u003cdiv class=\"grid g3\"\u003e\n\u003cdiv class=\"card\"\u003e\n\u003ch3\u003eLower Unsprung Mass\u003c\/h3\u003e\n\u003cp\u003eStopFlex carbon-ceramic rotors are engineered to reduce rotor mass versus comparable iron discs, helping the suspension react cleaner and the steering feel more precise.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"card\"\u003e\n\u003ch3\u003eHigh-Temperature Stability\u003c\/h3\u003e\n\u003cp\u003eThe carbon-silicon-carbide matrix is built for stable braking behavior at temperatures that can push iron rotors into heavy fade.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"card\"\u003e\n\u003ch3\u003eRust-Free Rotor Surface\u003c\/h3\u003e\n\u003cp\u003eCarbon ceramic does not form orange flash rust after rain, washing, or storage, keeping the visible rotor face cleaner behind open wheels.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"card\"\u003e\n\u003ch3\u003eLong Street-Service Potential\u003c\/h3\u003e\n\u003cp\u003eIn normal road use with matched pads and proper bedding, StopFlex CCB rotors are designed for far longer service life than typical iron replacement rotors.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"card\"\u003e\n\u003ch3\u003eLow Visible Dust\u003c\/h3\u003e\n\u003cp\u003eWhen paired with matched StopFlex pads, the system produces very low visible brake dust compared with conventional iron rotor and pad combinations.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"card\"\u003e\n\u003ch3\u003ePremium Ceramic-Glaze Appearance\u003c\/h3\u003e\n\u003cp\u003eStopFlex's proprietary coating creates a bright, high-end ceramic-glaze finish with subtle glaze texture and a more premium visual character behind open wheels.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"card\"\u003e\n\u003ch3\u003eStreet-Usable Cold Bite\u003c\/h3\u003e\n\u003cp\u003eStreet Spec and Track-Day Spec rotors are designed for normal first-stop road use, including cold-weather operation. Motorsport Spec is the competition-focused exception.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"card\"\u003e\n\u003ch3\u003eContinuous Fiber Reinforcement\u003c\/h3\u003e\n\u003cp\u003eLong-fiber carbon ceramic construction improves structural strength and thermal durability versus chopped-fiber approaches.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\u003c\/section\u003e\u003csection class=\"box\"\u003e\u003ch2\u003eHeat Management Note\u003c\/h2\u003e\n\u003cp\u003eCarbon ceramic rotors tolerate extreme surface temperature, but they do not remove every heat-management requirement. During repeated hard stops, heat can still soak into pads, fluid, seals, calipers, wheels, and nearby components. For long track sessions, mountain descents, or sustained aggressive driving, brake cooling and high-temperature fluid are still recommended.\u003c\/p\u003e\u003c\/section\u003e\u003csection class=\"box\"\u003e\u003ch2\u003eStreet \/ Track-Day \/ Motorsport Rotor Options\u003c\/h2\u003e\n\u003cdiv class=\"grid g3\"\u003e\n\u003cdiv class=\"card\"\u003e\n\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0761\/8933\/5811\/files\/StopFlex_Street_CCB_Rotor.jpg?v=1773907551\" alt=\"StopFlex Street Spec carbon ceramic brake rotor\"\u003e\u003ch3\u003eStreet Spec\u003c\/h3\u003e\n\u003cp\u003eCeramic coating, cross-drilled face, and large cooling channels.\u003c\/p\u003e\n\u003cp\u003eBest for daily driving and premium street builds that need clean cold bite, low dust, corrosion-free appearance, and long service life.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"card\"\u003e\n\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0761\/8933\/5811\/files\/StopFlex_Trackday_CCB_Rotor.jpg?v=1773907551\" alt=\"StopFlex Track-Day Spec carbon ceramic brake rotor\"\u003e\u003ch3\u003eTrack-Day Spec\u003c\/h3\u003e\n\u003cp\u003eCeramic coating, blank face, and honeycomb cooling channels.\u003c\/p\u003e\n\u003cp\u003eBest for fast-road and track-day use where repeated braking stability matters more than maximum visual drilling style.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"card\"\u003e\n\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0761\/8933\/5811\/files\/StopFlex_Racing_CCB_Rotor.jpg?v=1773907551\" alt=\"StopFlex Motorsport Spec carbon ceramic brake rotor\"\u003e\u003ch3\u003eMotorsport Spec\u003c\/h3\u003e\n\u003cp\u003eUncoated blank face with honeycomb cooling channels.\u003c\/p\u003e\n\u003cp\u003eBest for race-focused builds that run competition pads, high-temperature fluid, cooling strategy, and a proper warm-up window. Not the default street choice.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\u003c\/section\u003e\u003csection class=\"box\"\u003e\u003ch2\u003ePackage Scope\u003c\/h2\u003e\n\u003cdiv class=\"scroll\"\u003e\u003ctable\u003e\n\u003ctr\u003e\n\u003cth class=\"accent\"\u003eItem\u003c\/th\u003e\n\u003cth\u003eDetails\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFront calipers\u003c\/td\u003e\n\u003ctd\u003eGenuine Akebono OEM Audi RS 6-Piston (9N) Caliper\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFront CCB rotors\u003c\/td\u003e\n\u003ctd\u003e400mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRear calipers\u003c\/td\u003e\n\u003ctd\u003eTTSPORT EP4 4-Piston Caliper with EPB\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRear CCB rotors\u003c\/td\u003e\n\u003ctd\u003e380mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCCB brake pads\u003c\/td\u003e\n\u003ctd\u003eMatched for the supplied StopFlex carbon ceramic rotors\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRotor hats and floating hardware\u003c\/td\u003e\n\u003ctd\u003eVehicle-specific hardware package\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBrake lines\u003c\/td\u003e\n\u003ctd\u003eIncluded for complete kit-upgrade orders\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eColor customization\u003c\/td\u003e\n\u003ctd\u003eCustom caliper colors, a custom caliper logo, and custom rotor hat colors are available for every kit-upgrade order.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOrder scope\u003c\/td\u003e\n\u003ctd\u003eDefault listing is full-car set when front and rear are specified. Front-only or rear-only orders can be arranged after confirmation.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\u003c\/div\u003e\u003c\/section\u003e\u003csection class=\"box\"\u003e\u003ch2\u003eEPB \u0026amp; Rear Caliper Options\u003c\/h2\u003e\n\u003cp\u003eThis vehicle leaves the factory with an electronic parking brake (EPB) built into the rear brake, so the rear of the kit is built to keep that EPB working. There are two rear paths. The first is a dual-caliper rear: a main performance caliper handles braking while a dedicated EPB actuator caliper is retained alongside it, so the electronic parking brake, auto-hold, and hill-start assist all keep working; on this path the rear performance caliper can be the TTSPORT EP4 \/ EP4S 4-piston caliper. The second is an EPB-integrated caliper, a single rear caliper with the electromechanical parking-brake motor built in for a cleaner install with fewer parts behind the wheel; on this path the rear is the TTSPORT EP4 \/ EP4S 4-piston caliper with integrated EPB. Which path fits best depends on your exact trim and EPB configuration, your budget, your appearance preference, and your wheel size and spoke clearance. Confirm your car's rear-brake configuration with StopFlex before ordering so the correct EPB-compatible rear option is built for your kit.\u003c\/p\u003e\n\u003cdiv class=\"scroll\"\u003e\u003ctable\u003e\n\u003ctr\u003e\n\u003cth class=\"accent\"\u003eRear option\u003c\/th\u003e\n\u003cth\u003eWhat it is\u003c\/th\u003e\n\u003cth\u003eRear caliper\u003c\/th\u003e\n\u003cth\u003eBest when\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDual caliper (EPB retained)\u003c\/td\u003e\n\u003ctd\u003ePerformance caliper plus a dedicated EPB actuator caliper, both fitted on the rear, so the factory electronic parking brake keeps working.\u003c\/td\u003e\n\u003ctd\u003eTTSPORT EP4 \/ EP4S 4-Piston Caliper\u003c\/td\u003e\n\u003ctd\u003eYou want guaranteed factory EPB, auto-hold, and hill-start behavior preserved.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eEPB-integrated caliper\u003c\/td\u003e\n\u003ctd\u003eA single rear caliper with the electromechanical parking-brake motor built in, for a cleaner install with fewer parts behind the wheel.\u003c\/td\u003e\n\u003ctd\u003eTTSPORT EP4 \/ EP4S 4-Piston Caliper with integrated EPB\u003c\/td\u003e\n\u003ctd\u003eYou want a cleaner single-caliper rear with full EPB function.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\u003c\/div\u003e\n\u003cp\u003eTTSPORT EP4S rear caliper specification (the EP4 shares the same engineering, slightly more compact):\u003c\/p\u003e\n\u003cdiv class=\"scroll\"\u003e\u003ctable\u003e\n\u003ctr\u003e\n\u003cth class=\"accent\"\u003eSpecification\u003c\/th\u003e\n\u003cth\u003eEP4S\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAxle position\u003c\/td\u003e\n\u003ctd\u003eRear\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePiston count\u003c\/td\u003e\n\u003ctd\u003e4 hydraulic + 1 EPB actuator\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePiston type\u003c\/td\u003e\n\u003ctd\u003eTwo-piece heat-insulated, dust boots + EPB actuator\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePiston diameter\u003c\/td\u003e\n\u003ctd\u003e28 mm × 4 \/ 27 mm × 1\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTotal piston area\u003c\/td\u003e\n\u003ctd\u003e30.4 cm² per caliper\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eManufacturing process\u003c\/td\u003e\n\u003ctd\u003eTwo-piece forged aluminum body\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNet weight\u003c\/td\u003e\n\u003ctd\u003e4.50 kg per caliper (no pads)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSurface finish\u003c\/td\u003e\n\u003ctd\u003eHigh-temperature gloss coating\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRecommended wheel size\u003c\/td\u003e\n\u003ctd\u003e18 in or larger\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\u003c\/div\u003e\u003c\/section\u003e\u003csection class=\"box\"\u003e\u003ch2\u003eFAQ\u003c\/h2\u003e\n\u003cdiv class=\"faq\"\u003e\n\u003cdetails\u003e\u003csummary\u003eWill this kit fit every Audi A5, S5, and RS5 B9 the same way?\u003c\/summary\u003e\u003cdiv class=\"a\"\u003e\u003cp\u003eNo. StopFlex does not treat the B9 chassis name as a universal fitment. A5, S5, and RS5 trims can differ in upright, hub, offset, and wheel-clearance requirements, so the brackets, rotor-hat offsets, and caliper mounting are built for the exact confirmed model and trim.\u003c\/p\u003e\u003c\/div\u003e\u003c\/details\u003e\u003cdetails\u003e\u003csummary\u003eWhat wheels are required for the 400mm front rotor?\u003c\/summary\u003e\u003cdiv class=\"a\"\u003e\u003cp\u003eThe 400mm front carbon-ceramic rotor requires 20-inch or larger wheels; wheels under 20 inches will not clear the package. Final approval also depends on spoke shape, wheel offset, and inner-barrel clearance around the Genuine Akebono OEM Audi RS 6-Piston (9N) Caliper.\u003c\/p\u003e\u003c\/div\u003e\u003c\/details\u003e\u003cdetails\u003e\u003csummary\u003eWill the electronic parking brake still work?\u003c\/summary\u003e\u003cdiv class=\"a\"\u003e\u003cp\u003eYes. The rear package uses the TTSPORT EP4 4-Piston Caliper with EPB, which has four hydraulic service pistons for braking and a dedicated EPB actuator piston, so the B9 retains electronic parking-brake convenience while gaining a 380mm rear carbon-ceramic rotor.\u003c\/p\u003e\u003c\/div\u003e\u003c\/details\u003e\u003cdetails\u003e\u003csummary\u003eWhy choose carbon-ceramic instead of replacing the factory iron or OEM carbon-ceramic brakes?\u003c\/summary\u003e\u003cdiv class=\"a\"\u003e\u003cp\u003eCarbon-ceramic rotors reduce brake dust, lower rotating mass compared with similar-size iron rotors, and tolerate repeated heat cycles better in aggressive street or track use. For owners replacing worn or damaged OEM carbon-ceramic hardware, this kit provides a complete matched package with calipers, rotors, pads, hats, hardware, and lines rather than a dealer rotor-only repair path.\u003c\/p\u003e\u003c\/div\u003e\u003c\/details\u003e\n\u003c\/div\u003e\u003c\/section\u003e\u003csection class=\"cta\" id=\"contact_form_page\"\u003e\u003ch2\u003eNeed Fitment Confirmation?\u003c\/h2\u003e\n\u003cp\u003eSend the exact vehicle details, current rotor sizes, and caliper type before ordering.\u003c\/p\u003e\n\u003cdiv class=\"cta-row\"\u003e\n\u003ca class=\"btn\" href=\"\/es\/pages\/carbon-ceramic-brakes\" target=\"_blank\" rel=\"noopener noreferrer\"\u003eCarbon Ceramic Brakes: Buying \u0026amp; Fitment Guide\u003c\/a\u003e\u003ca class=\"btn ghost\" href=\"#contact_form_page\"\u003eConfirm Fitment\u003c\/a\u003e\n\u003c\/div\u003e\u003c\/section\u003e\n\u003c\/div\u003e","brand":"StopFlex","offers":[{"title":"Default Title","offer_id":48333569392899,"sku":"100272","price":5000.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0761\/8933\/5811\/files\/Product_Genuine_Akebono_OEM_Audi_RS_9N_6-Piston_Caliper_76954d03-d359-4aec-af32-3cb4942cdaf4.png?v=1780913925","url":"https:\/\/stopflex-ccb.com\/es\/products\/audi-a5-s5-rs5-b9-akebono-9n-400mm-ccb-kit","provider":"StopFlex","version":"1.0","type":"link"}