{"product_id":"wilwood-261-16840-1-00","title":"Wilwood One-Inch Compact Master Cylinder Kit with Direct-Mount Billet Reservoir, Black Body","description":"\u003cp\u003eThe one-inch single-outlet compact master is supplied with a direct-mounted aluminum reservoir. A 2.25-inch vertical flange and threaded pushrod connect it to the matched pedal arrangement. Master cylinders are part of Wilwood Engineering's wider disc brake range, alongside calipers, rotors, valves, fittings and brake lines. Wilwood was founded in 1977 by Bill Wood and designs and manufactures its systems from Camarillo, California for motorsport, specialized and street-performance applications. Hydraulic sizing and mechanical compatibility remain decisions for the complete brake system.\u003c\/p\u003e\u003ch3\u003eTechnical Details\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer part number:\u003c\/strong\u003e 261-16840-1.00\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e Aluminum master body and billet aluminum reservoir\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCylinder bore:\u003c\/strong\u003e 1.00\"\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePressure circuits:\u003c\/strong\u003e 1\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStroke Length:\u003c\/strong\u003e 1.12 in\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eListed displacement per stroke:\u003c\/strong\u003e 0.87 cu in\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eReservoir Type:\u003c\/strong\u003e Direct-mounted reservoir on Compact Remote cylinder\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFluid capacity:\u003c\/strong\u003e 4.00 oz\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFlange-to-end length:\u003c\/strong\u003e 3.37\"\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOverall Length:\u003c\/strong\u003e 7.80\"\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMounting centers:\u003c\/strong\u003e 2.25\"\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePushrod dimensions:\u003c\/strong\u003e 4.00\" x 5\/16-24\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFinish:\u003c\/strong\u003e Black E-coat\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInlet arrangement:\u003c\/strong\u003e 0.87-inch seating diameter with 11\/16-20 internal thread; this is the reservoir feed, not the pressure outlet\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePressure connection:\u003c\/strong\u003e 1\/8-27 NPT outlet; select the appropriate pressure-line adapter\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eReservoir package:\u003c\/strong\u003e One directly mounted 4 oz Type III hard-anodized finned billet reservoir with cap and seals\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFitment \u0026amp; Compatibility\u003c\/h3\u003e\u003cp\u003eVerify bore selection, pushrod engagement and full piston movement. Confirm that the body-mounted reservoir clears nearby structure and remains serviceable.\u003c\/p\u003e\u003ch3\u003eManufacturer Documents\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/www.wilwood.com\/MasterCylinders\/MasterCylinderProd?itemno=261-16840-1.00\" target=\"_blank\" rel=\"noopener\"\u003eWilwood product specifications\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/www.wilwood.com\/PDF\/Flyers\/fl554.pdf\" target=\"_blank\" rel=\"noopener\"\u003eWilwood FL554 instructions and specifications\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/www.wilwood.com\/PDF\/Flyers\/fl162.pdf\" target=\"_blank\" rel=\"noopener\"\u003eWilwood FL162 instructions and specifications\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003ePMB Performance offers over 20 years of parts and brake-fitment experience. For a compatibility check, provide the existing assembly and the dimensions that govern the replacement.\u003c\/p\u003e","brand":"Wilwood","offers":[{"title":"Default Title","offer_id":67731113738418,"sku":"261-16840-1.00","price":166.02,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0521\/8792\/2610\/files\/261-16840-1.00-xl.jpg?v=1792184299","url":"https:\/\/pmbperformance.com\/products\/wilwood-261-16840-1-00","provider":"PMB Performance","version":"1.0","type":"link"}