{"product_id":"034motorsport-1-piece-front-discs-338x30mm-audi-a4-a5-b9-allroad-2-0-tfsi","title":"034Motorsport 1-Piece Front Discs 338x30mm - Audi A4 A5 B9 \u0026 allroad 2.0 TFSI","description":"\u003ch6\u003eDescription\u003c\/h6\u003e\u003cp\u003e034Motorsport's 1-piece discs sit between a plain factory replacement and their 2-piece floating discs. They bolt on in place of the original discs, work with the factory calipers, and can be run with standard or uprated pads.\u003c\/p\u003e\u003cp\u003eInside, the vanes are directional, so the disc pumps air from the centre out through the friction ring as it turns, which helps it shed heat on fast road drives, autotests and entry-level track days. The discs are cast from a heat-treated CM-250 alloy chosen to cope with repeated heat cycles better than standard iron, and the J-slotted faces help clear pad gas and debris.\u003c\/p\u003e\u003cp\u003eA Geomet coating protects against corrosion through the year. Temperature paint on the disc edge changes colour at set points: green turns white at 478°C, orange turns yellow at 571°C and red turns white at 640°C. If the red mark has turned white all the way round, the discs are running hotter than intended and 034 suggest lower-friction pads, more cooling or their 2-piece discs.\u003c\/p\u003e\u003cp\u003eSupplied as a pair for one axle. Fit new pads or check your existing pads are in good condition, and bed the discs and pads in before any hard braking or track use.\u003c\/p\u003e\u003ch3\u003eKey Features\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e338 x 30mm disc size, direct replacement for the original\u003c\/li\u003e\n\u003cli\u003eWorks with the factory calipers and standard or uprated pads\u003c\/li\u003e\n\u003cli\u003eHeat-treated CM-250 alloy\u003c\/li\u003e\n\u003cli\u003eJ-slotted friction face\u003c\/li\u003e\n\u003cli\u003eDirectionally vented cooling vanes\u003c\/li\u003e\n\u003cli\u003eGeomet anti-corrosion coating\u003c\/li\u003e\n\u003cli\u003eTemperature-indicating paint marks on the disc edge\u003c\/li\u003e\n\u003cli\u003eInterchanges with OE 8W0 615 301 P and 8W0 615 301 AB\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eWhat's in the box\u003c\/h3\u003e\u003cul\u003e\u003cli\u003e034Motorsport 1-piece front brake disc pair\u003c\/li\u003e\u003c\/ul\u003e\n\u003ch6\u003eProduct Details\u003c\/h6\u003e\n\u003cdiv\u003e\n\u003cb\u003eBrand: \u003c\/b\u003e034 Motorsport\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cb\u003eManufacturer Part Number: \u003c\/b\u003e034-301-1023\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cb\u003eType: \u003c\/b\u003eBrake Discs\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cb\u003eCountry of Origin: \u003c\/b\u003eUnited States\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cb\u003ePerformance Part: \u003c\/b\u003eYes\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cb\u003eUnit Quantity: \u003c\/b\u003e1 pair (front axle)\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cb\u003ePlacement on Vehicle: \u003c\/b\u003eFront\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cb\u003eDisc Size: \u003c\/b\u003e338 x 30mm\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cb\u003eDesign: \u003c\/b\u003e1-piece, J-slotted, directionally vented\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cb\u003eMaterial: \u003c\/b\u003eHeat-treated CM-250 alloy, Geomet coated\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cb\u003eReplaces OE Numbers: \u003c\/b\u003e8W0 615 301 P, 8W0 615 301 AB\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cb\u003eListed Weight: \u003c\/b\u003e22.68 kg\u003c\/div\u003e\n\u003ch6\u003eVehicle Fitment\u003c\/h6\u003e\u003ctable style=\"width:100%; border-collapse:collapse; font-size:14px;\"\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003eManufacturer\u003c\/th\u003e\n\u003cth\u003eModel\u003c\/th\u003e\n\u003cth\u003eEngine\/Platform\u003c\/th\u003e\n\u003cth\u003eYear\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAudi\u003c\/td\u003e\n\u003ctd\u003eA4 Saloon \/ Avant (B9, B9.5)\u003c\/td\u003e\n\u003ctd\u003e2.0 TFSI\u003c\/td\u003e\n\u003ctd\u003e-\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAudi\u003c\/td\u003e\n\u003ctd\u003eA4 allroad (B9, B9.5)\u003c\/td\u003e\n\u003ctd\u003e2.0 TFSI\u003c\/td\u003e\n\u003ctd\u003e-\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAudi\u003c\/td\u003e\n\u003ctd\u003eA5 Coupe \/ Sportback \/ Cabriolet (B9, B9.5)\u003c\/td\u003e\n\u003ctd\u003e2.0 TFSI\u003c\/td\u003e\n\u003ctd\u003e-\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\u003cp\u003e034 give no model years. For cars with 338 x 30mm front discs only (OE 8W0 615 301 P \/ AB) - B9 A4 and A5 front disc size depends on engine and specification, and lower-powered cars use a smaller disc. Our part finder links the 245-265PS 2.0 TFSI quattro versions only; check the size or part number on your existing discs before ordering.\u003c\/p\u003e\u003cp\u003eIf you are unsure, send us your registration or VIN and we will confirm fitment before you buy.\u003c\/p\u003e","brand":"034 Motorsport","offers":[{"title":"Default Title","offer_id":56494960673147,"sku":"034-034-301-1023","price":419.62,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0511\/6700\/2795\/files\/034-301-1023-1b_1.jpg?v=1791414979","url":"https:\/\/hazmotorsport.co.uk\/products\/034motorsport-1-piece-front-discs-338x30mm-audi-a4-a5-b9-allroad-2-0-tfsi","provider":"HAZ MOTORSPORT","version":"1.0","type":"link"}