{"product_id":"millway-bmw-blue-m-front-caliper-stainless-racing-pistons-90523-40-8","title":"Millway Motorsport BMW Blue M Front Caliper Stainless Racing Pistons | 90523-40-8","description":"\u003ch2\u003eMillway Motorsport BMW Blue M Front Caliper Stainless Racing Pistons | 90523-40-8\u003c\/h2\u003e\u003cp\u003eGenuine \u003cstrong\u003eMillway Motorsport 90523-40-8\u003c\/strong\u003e, manufactured in Sweden for \u003cstrong\u003eBMW\/Brembo four-piston front blue M Performance brake calipers on selected F20\/F21\/F22\/F23 and F87\/F80\/F82\/F83 models\u003c\/strong\u003e. Designed for track-focused suspension and chassis preparation, with UK pricing including VAT.\u003c\/p\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eEight diamond-polished stainless-steel caliper pistons, sufficient for both front four-piston calipers\u003c\/li\u003e\n\u003cli\u003eHeat-resistant piston construction intended for motorsport brake temperatures\u003c\/li\u003e\n\u003cli\u003ePiston-air-gap design to moderate heat transfer at the brake pad interface\u003c\/li\u003e\n\u003cli\u003eDirect caliper service upgrade only when the original BMW\/Brembo piston dimensions match\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eVehicle fitment\u003c\/h3\u003e\u003cp\u003eBMW\/Brembo four-piston front blue M Performance brake calipers on selected F20\/F21\/F22\/F23 and F87\/F80\/F82\/F83 models. Double-check the vehicle, axle and hardware against the manufacturer reference, particularly if other aftermarket parts are fitted.\u003c\/p\u003e\u003ch3\u003eFitting and important exclusions\u003c\/h3\u003e\u003cp\u003eTRACK\/RACE USE: These racing pistons do not accommodate the original dust boots or seals. Not suitable for every BMW brake package; specifically check 2NH and alternative calipers before ordering. This is a specialist brake rebuild; have a qualified technician fit, bleed and test the system.\u003c\/p\u003e\u003cp\u003ePart number: \u003cstrong\u003e90523-40-8\u003c\/strong\u003e. Product SKU: \u003cstrong\u003eMW90523-40-8\u003c\/strong\u003e. Hack Engineering source pricing used as UK RRP. Lead time and stock subject to supplier confirmation.\u003c\/p\u003e\u003cp\u003eBrowse \u003ca href=\"\/collections\/millway-motorsport\"\u003eMillway Motorsport\u003c\/a\u003e, \u003ca href=\"\/collections\/millway-suspension-bushes\"\u003eMillway Bushes \u0026amp; Uniball\u003c\/a\u003e and \u003ca href=\"\/collections\/track-day-motorsport-parts\"\u003eTrack Day Parts\u003c\/a\u003e.\u003c\/p\u003e","brand":"Millway Motorsport","offers":[{"title":"Default Title","offer_id":67618640494982,"sku":"MW90523-40-8","price":704.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0799\/0411\/2989\/files\/millway-mw90523-40-8.jpg?v=1791897589","url":"https:\/\/www.nineteen72performance.com\/products\/millway-bmw-blue-m-front-caliper-stainless-racing-pistons-90523-40-8","provider":"Nineteen72 Performance","version":"1.0","type":"link"}