{"product_id":"wilwood-221-17401-rear-flexline-bmw-m3","title":"Wilwood 08-13 BMW M3 Flexline Kit - Rear","description":"\u003ch4\u003eGive Your M3's Brakes The Response They Deserve\u003c\/h4\u003e\n\u003cp\u003eA high output V8 deserves a brake pedal that matches its performance, but factory rubber hoses flex under hard braking and dull the feedback you need at the track or on your favorite backroad. The Wilwood 221-17401 rear flexline kit swaps the stock rubber hose on the BMW M3 for a braided stainless steel line, sharpening pedal feel corner after corner.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003eDirect bolt in replacement for the factory rear rubber brake hose\u003c\/li\u003e\n\u003cli\u003eBraided stainless steel construction resists expansion under hard braking\u003c\/li\u003e\n\u003cli\u003eDOT compliant for street legal use\u003c\/li\u003e\n\u003cli\u003eImproves brake pedal feel and response compared to aging rubber lines\u003c\/li\u003e\n\u003cli\u003eCorrosion resistant PTFE inner liner for long service life\u003c\/li\u003e\n\u003cli\u003eWilwood MPN 221-17401 rear position kit\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eFitment Table\u003c\/h4\u003e\n\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eYear Range\u003c\/th\u003e\n\u003cth\u003eMake\u003c\/th\u003e\n\u003cth\u003eModel\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e2008-2013\u003c\/td\u003e\n\u003ctd\u003eBMW\u003c\/td\u003e\n\u003ctd\u003eM3\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch4\u003eSpecifications\u003c\/h4\u003e\n\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eDetail\u003c\/th\u003e\n\u003cth\u003eValue\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eBrand\u003c\/td\u003e\n\u003ctd\u003eWilwood\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMPN\u003c\/td\u003e\n\u003ctd\u003e221-17401\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eUPC\u003c\/td\u003e\n\u003ctd\u003eN\/A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePosition\u003c\/td\u003e\n\u003ctd\u003eRear\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eConstruction\u003c\/td\u003e\n\u003ctd\u003eBraided Stainless Steel, PTFE Liner\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCompliance\u003c\/td\u003e\n\u003ctd\u003eDOT Approved\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch4\u003eWhat's Included\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003eRear brake flexlines (pair)\u003c\/li\u003e\n\u003cli\u003eMounting hardware\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eAbout Wilwood\u003c\/h4\u003e\n\u003cp\u003eWilwood Engineering has designed and manufactured high performance brake systems for street, off road, and racing applications for decades. Their stainless steel flexlines are built to the same standard as their brake kits, giving daily drivers and racers alike a firmer, more consistent pedal.\u003c\/p\u003e\n\u003ch4\u003eRelated Parts on Our Site\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003e\u003ca href=\"\/products\/wilwood-caliper-dynapro-radial-thin-pad-1-75in-pistons-81in-disc\"\u003eWilwood Dynapro Radial Caliper - 1.75in Pistons\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/wilwood-caliper-forged-superlite-1-12in-pistons-81in-disc\"\u003eWilwood Forged Superlite Caliper - 1.12in Pistons\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eFAQ\u003c\/h4\u003e\n\u003cstrong\u003eWhat is the Wilwood 221-17401?\u003c\/strong\u003e\n\u003cp\u003eThe Wilwood 221-17401 is a braided stainless steel rear brake flexline kit designed to replace the factory rubber brake hose on 2008-2013 BMW M3 models.\u003c\/p\u003e\n\u003cstrong\u003eWill this flexline fit my M3?\u003c\/strong\u003e\n\u003cp\u003eThis kit fits 2008-2013 BMW M3 model years at the rear position. Check your vehicle's model year against the fitment table above to confirm.\u003c\/p\u003e\n\u003cstrong\u003eIs this brake line DOT legal for street use?\u003c\/strong\u003e\n\u003cp\u003eYes, the Wilwood 221-17401 is DOT compliant and legal for street use.\u003c\/p\u003e\n\u003cstrong\u003eWhy upgrade from a rubber brake line to a stainless steel flexline?\u003c\/strong\u003e\n\u003cp\u003eRubber brake hoses expand under hydraulic pressure, especially as they age, which softens pedal feel. A braided stainless steel line with a PTFE liner resists that expansion, giving a firmer and more responsive pedal.\u003c\/p\u003e\n\u003cstrong\u003eDo I need to bleed the brakes after installing this flexline?\u003c\/strong\u003e\n\u003cp\u003eYes, the brake system must be bled after installation to remove any air introduced during the swap.\u003c\/p\u003e\n\u003cstrong\u003eDoes this kit include the front flexlines as well?\u003c\/strong\u003e\n\u003cp\u003eNo, this listing is for the rear position only. A separate front flexline kit is required if replacing all four corners.\u003c\/p\u003e\n\u003cstrong\u003eWhat material is the outer covering on this brake line?\u003c\/strong\u003e\n\u003cp\u003eThe line uses a braided stainless steel outer covering over a PTFE inner liner for durability and resistance to abrasion.\u003c\/p\u003e\n\u003cstrong\u003eCan this flexline handle track use?\u003c\/strong\u003e\n\u003cp\u003eYes, the braided stainless steel construction and PTFE liner are designed to resist expansion under the sustained heavy braking common in track driving.\u003c\/p\u003e\n\u003ch4\u003eInstall Instructions\u003c\/h4\u003e\n\u003col\u003e\n\u003cli\u003eRaise and safely support the vehicle, then remove the rear wheels.\u003c\/li\u003e\n\u003cli\u003eDisconnect the factory rubber brake hoses at the hardline and caliper connections.\u003c\/li\u003e\n\u003cli\u003eRemove the factory hoses and any retaining hardware.\u003c\/li\u003e\n\u003cli\u003eInstall the new Wilwood stainless steel flexlines, connecting them to the hardlines and calipers.\u003c\/li\u003e\n\u003cli\u003eTorque all fittings to manufacturer specification and secure with any retaining hardware.\u003c\/li\u003e\n\u003cli\u003eBleed the brake system to remove air introduced during installation.\u003c\/li\u003e\n\u003cli\u003eCheck for leaks and verify proper pedal feel before returning the vehicle to service.\u003c\/li\u003e\n\u003c\/ol\u003e\n","brand":"Wilwood","offers":[{"title":"Default Title","offer_id":46274435842127,"sku":"WIL221-17401","price":72.58,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1062\/7920\/files\/wilwood-221-17401-rear-flexline-bmw-m3.webp?v=1785336504","url":"https:\/\/www.blackopsautoworks.com\/products\/wilwood-221-17401-rear-flexline-bmw-m3","provider":"Black Ops Auto Works","version":"1.0","type":"link"}