{"product_id":"seat-leon-cupra-5f-btcc-big-brake-kit-ap-racing-cp9660-complete-upgrade-xc3-engineering","title":"Seat Leon Cupra 5F – BTCC Big Brake Kit – AP Racing CP9660 Complete Upgrade | XC3 Engineering","description":"\u003ch3\u003e\u003cspan\u003eXC3 Engineering BTCC Big Brake Kit – SEAT Leon Cupra 5F\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eUpgrade the braking performance of your SEAT Leon Cupra 5F with the XC3 Engineering BTCC Big Brake Kit, built around AP Racing CP9660 Pro 5000 R six-piston calipers and 368 × 36 mm ex-BTCC floating brake rotors.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eDesigned for fast-road, trackday and clubsport use, this complete front brake upgrade combines proven motorsport-derived components with XC3 precision-engineered rotor bells and caliper brackets.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eThe result is a high-capacity braking package designed to improve thermal management, consistency and confidence under repeated hard use.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch3\u003e\u003cspan\u003eWhy Choose the XC3 BTCC Big Brake Kit?\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eThe standard Leon Cupra 5F braking system can become a limiting factor once the car is driven harder, especially with increased power, higher-grip tyres or repeated track use.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003ePotential benefits of the XC3 BTCC setup include:\u003c\/span\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cspan\u003eImproved braking consistency\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eIncreased thermal capacity\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eBetter resistance to brake fade\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eStronger repeatability under heavy use\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eAP Racing six-piston calipers\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eFloating BTCC rotor design\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eMotorsport-derived brake pad options\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eSuitable for fast-road, trackday and clubsport builds\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\u003cspan\u003eAP Racing CP9660 Pro 5000 R Calipers\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eAt the heart of the kit are AP Racing CP9660 Pro 5000 R six-piston calipers.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eThese calipers are widely used in serious performance and motorsport braking systems thanks to their strong combination of rigidity, braking control and repeatable performance.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003ePotential benefits include:\u003c\/span\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cspan\u003eStrong pedal response\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eConsistent pad pressure\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eHigh braking capacity\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eSuitable for repeated track use\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\u003cspan\u003e368 × 36 mm Ex-BTCC Floating Rotors\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eThe kit includes 368 × 36 mm ex-BTCC floating brake rotors.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eThese motorsport-derived discs provide increased thermal capacity compared with a smaller road-focused brake setup.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eThe larger rotor size helps manage the heat generated during:\u003c\/span\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cspan\u003eRepeated high-speed stops\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eLong track sessions\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eHigh-grip tyre use\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eAggressive road driving\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\u003cspan\u003eFloating Rotor Design\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eThe floating bobbin assembly allows the brake disc to expand in a controlled way as temperatures increase.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003ePotential benefits include:\u003c\/span\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cspan\u003eImproved thermal behaviour\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eMore consistent braking\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eReduced thermal stress\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eBetter repeatability during demanding use\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\u003cspan\u003eXC3 Anodised Rotor Bells\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eXC3 Engineering anodised rotor bells are included to correctly mount the BTCC brake rotors to the Leon Cupra 5F front hub assembly.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eThey are designed to provide:\u003c\/span\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cspan\u003eAccurate rotor positioning\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eStrong structural support\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eLightweight construction\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eReliable performance under load\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\u003cspan\u003eXC3 Anodised Caliper Brackets\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eThe supplied XC3 caliper brackets position the AP Racing CP9660 calipers correctly relative to the 368mm brake rotors.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eAccurate bracket design is essential to maintain:\u003c\/span\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cspan\u003eCorrect caliper alignment\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eProper pad sweep\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eConsistent disc positioning\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eReliable braking geometry\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\u003cspan\u003eAP Racing Floating Bobbin Hardware\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eAP Racing bobbin kits are supplied as part of the package.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eThese correctly connect the floating brake rotor to the XC3 bell and allow the disc assembly to operate as intended.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch3\u003e\u003cspan\u003eBraided Front Brake Lines\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eA pair of braided front brake lines is included.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eBraided hoses can help reduce hose expansion under pressure and contribute to a more consistent and direct pedal feel.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch3\u003e\u003cspan\u003eChemi Black High-Tensile Hardware\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eHigh-tensile Chemi Black bracket hardware is included for a strong and secure installation.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch3\u003e\u003cspan\u003eEx-BTCC Raybestos ST45 Brake Pads\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eThe kit includes inspected ex-BTCC Raybestos ST45 brake pads.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eThese provide a motorsport-derived friction option suited to demanding braking conditions.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eBecause the pads are ex-BTCC components, some cosmetic signs of prior motorsport use should be expected.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch3\u003e\u003cspan\u003eProject Mu H21 Pads Available on Request\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eProject Mu H21 pads are also available on request for customers looking for an alternative brake pad option.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003ePad choice can be tailored around:\u003c\/span\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cspan\u003eRoad versus track use\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eDesired bite level\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eTemperature range\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003ePedal feel\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eConsumable preference\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\u003cspan\u003eImproved Thermal Capacity\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eRepeated hard braking generates substantial heat.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eThe combination of:\u003c\/span\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cspan\u003e368 × 36 mm rotors\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eFloating disc construction\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eAP Racing CP9660 calipers\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eMotorsport brake pads\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003ecreates a braking package designed to handle higher thermal loads more effectively.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch3\u003e\u003cspan\u003eImproved Braking Consistency\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eOne of the key advantages of a larger motorsport-derived brake setup is repeatability.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eThe XC3 kit is designed to maintain more consistent braking throughout:\u003c\/span\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cspan\u003eLonger track sessions\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eRepeated hard stops\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eHigher-speed driving\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eAggressive fast-road use\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\u003cspan\u003eReduced Risk of Brake Fade\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eAs brake temperature rises, standard braking systems can begin to lose consistency.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eThe increased rotor mass, floating construction and motorsport caliper design help create a more stable braking platform under repeated load.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch3\u003e\u003cspan\u003eEx-BTCC Rotor \u0026amp; Pad Condition\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eThe supplied rotors and Raybestos ST45 pads are inspected ex-BTCC motorsport components.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eThis gives customers access to high-level competition hardware at a more cost-effective price point than an equivalent fully new setup.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eSome cosmetic marks and signs of previous motorsport use should be expected.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch3\u003e\u003cspan\u003eIdeal for Performance \u0026amp; Track Builds\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eThis kit is particularly well suited to:\u003c\/span\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cspan\u003eFast-road Leon Cupra 5F builds\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eTrackday cars\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eClubsport setups\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eHigher-power builds\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eSemi-slick tyre setups\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eMotorsport-inspired projects\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\u003cspan\u003eLifetime Warranty\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eXC3-manufactured components are covered by the XC3 Lifetime Warranty.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eThis provides additional confidence in the durability and engineering of the rotor bells and caliper brackets.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eWarranty terms and conditions should be checked before purchase.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch3\u003e\u003cspan\u003eProfessional Installation Required\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eProfessional installation is strongly recommended.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003ePerformance braking systems are safety-critical and should be fitted by a suitably experienced technician.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eInstallation should include checks of:\u003c\/span\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cspan\u003eCaliper alignment\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eRotor alignment\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eHardware torque\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eBrake hose routing\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003ePad sweep\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eWheel clearance\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eFull system bleeding\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\u003cspan\u003eWheel Clearance\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eWheel clearance must be checked before ordering, especially with aftermarket wheels.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eCompatibility can depend on:\u003c\/span\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cspan\u003eWheel diameter\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eSpoke profile\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eOffset\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eBarrel clearance\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\u003cspan\u003eVehicle Fitment\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eCompatible with:\u003c\/span\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cspan\u003eSEAT Leon Cupra 5F\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\u003cspan\u003eWhat's Included?\u003c\/span\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cspan\u003e2 x AP Racing CP9660 Pro 5000 R six-piston calipers\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003e2 x Ex-BTCC 368 × 36 mm floating brake rotors\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003e2 x XC3 anodised rotor bells\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003e2 x XC3 anodised caliper brackets\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003e2 x AP Racing floating bobbin kits\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003e1 x Pair braided front brake lines\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eChemi Black high-tensile bracket hardware\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eEx-BTCC Raybestos ST45 brake pads\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\u003cspan\u003eExplore More SEAT Leon Cupra Performance Parts\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003e\u003ca href=\"https:\/\/therossocorsacollective.com\/collections\/xc3-engineering\"\u003eXC3 Engineering\u003c\/a\u003e – Browse XC3 braking, chassis and motorsport components.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003e\u003ca href=\"https:\/\/therossocorsacollective.com\/collections\/brakes\"\u003eBrakes\u003c\/a\u003e – Explore performance braking components and upgrades.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e\u003ca href=\"https:\/\/therossocorsacollective.com\/collections\/brake-discs\"\u003eBrake Discs\u003c\/a\u003e – Browse performance rotors and replacement brake discs.\u003c\/span\u003e\u003c\/p\u003e","brand":"XC3 Engineering","offers":[{"title":"Anodised Grey","offer_id":54972628205905,"sku":"sku-53238837707019","price":3295.0,"currency_code":"GBP","in_stock":true},{"title":"Nickel Plated","offer_id":54972628238673,"sku":"sku-53238837739787","price":3395.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0968\/6371\/5665\/files\/XC3_BTCC_BIg_brake_Kit_2_f731dcef-d42a-425a-a68d-23a860e4b2df.jpg?v=1789567190","url":"https:\/\/therossocorsacollective.com\/products\/seat-leon-cupra-5f-btcc-big-brake-kit-ap-racing-cp9660-complete-upgrade-xc3-engineering","provider":"The Rosso Corsa Collective","version":"1.0","type":"link"}