{"product_id":"wilwood-261-17799-bk","title":"Wilwood Black 1-1\/8-Inch Mopar Four-Bolt Tandem Master Kit with Right Valve, No Pushrod","description":"\u003cp\u003eThe larger 1-1\/8-inch bore is combined with a right-mounted valve and black body in this Mopar package. The master mounts through its four-bolt flange, while the input without a supplied rod requires separate actuation matching. Wilwood Engineering, the Camarillo, California disc brake manufacturer founded by Bill Wood in 1977, designs and builds systems for specialized, motorsport and street-performance applications. The product range covers brake lines, valves, fittings, calipers, master cylinders and rotors. A replacement component must preserve the intended relationship between the system's hydraulic and mechanical parts.\u003c\/p\u003e\u003ch3\u003eTechnical Details\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer part number:\u003c\/strong\u003e 261-17799-BK\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e Aluminum\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCylinder bore:\u003c\/strong\u003e 1-1\/8\"\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePressure circuits:\u003c\/strong\u003e 2\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStroke Length:\u003c\/strong\u003e 1.10 in\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eReservoir Type:\u003c\/strong\u003e Integral\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFluid capacity:\u003c\/strong\u003e 7.8 \/ 4.7 oz\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOverall Length:\u003c\/strong\u003e 7.16\"\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMounting centers:\u003c\/strong\u003e 3.25 × 1.76\"\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFinish:\u003c\/strong\u003e Black E-coat\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNative pressure ports:\u003c\/strong\u003e 1\/2-20 at both circuits; use the correct included outlet adapters and seal washers\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCircuit outlet adapters:\u003c\/strong\u003e Primary: 3\/8-24 or 1\/2-20 inverted flare; secondary: 3\/8-24 or 9\/16-20 inverted flare\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHydraulic relationship:\u003c\/strong\u003e Equal pressure output from the two circuits before external proportioning; 2:1 primary\/secondary volume relationship\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eService:\u003c\/strong\u003e Factory rebuild only; do not disassemble the tandem piston assembly\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eKit contents:\u003c\/strong\u003e Master cylinder, right-side combination proportioning valve and bracket, formed stainless connecting tubes and mounting hardware\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCombination-valve functions:\u003c\/strong\u003e Adjustable rear pressure, isolated front\/rear circuits, front-line junction and hydraulic brake-light switch\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFlange-to-end references:\u003c\/strong\u003e Exact product page: 6.55 inches; DS-1520 dimensional drawing: 6.70 inches. Confirm the available installation envelope.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCircuit routing:\u003c\/strong\u003e Primary outlet A feeds the axle with greater total effective caliper piston area, normally the front; secondary B feeds the lesser-area axle, normally the rear. Outlet locations are reversed from the original Mopar master cylinder; follow DS-1520.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLinkage:\u003c\/strong\u003e Pushrod not included; match the existing or separately supplied actuation interface\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFitment \u0026amp; Compatibility\u003c\/h3\u003e\u003cp\u003eConfirm the exact Mopar mount and booster rod depth. Check bore choice, complete piston movement and right-side tubing clearance against the installed system.\u003c\/p\u003e\u003ch3\u003eManufacturer Documents\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/www.wilwood.com\/MasterCylinders\/MasterCylinderProd?itemno=261-17799-BK\" target=\"_blank\" rel=\"noopener\"\u003eWilwood product specifications\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/www.wilwood.com\/PDF\/DataSheets\/ds1520.pdf\" target=\"_blank\" rel=\"noopener\"\u003eWilwood DS1520 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\u003cli\u003e\u003ca href=\"https:\/\/www.wilwood.com\/PDF\/DataSheets\/ds1178.pdf\" target=\"_blank\" rel=\"noopener\"\u003eWilwood DS1178 instructions and specifications\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003ePMB Performance has more than 20 years of experience matching brake components. Share the actual mounting, linkage and hydraulic arrangement when requesting fitment assistance.\u003c\/p\u003e","brand":"Wilwood","offers":[{"title":"Default Title","offer_id":67731115016370,"sku":"261-17799-BK","price":523.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0521\/8792\/2610\/files\/261-17799-BK-xl.jpg?v=1792184314","url":"https:\/\/pmbperformance.com\/products\/wilwood-261-17799-bk","provider":"PMB Performance","version":"1.0","type":"link"}