{"product_id":"wilwood-170-12471","title":"Wilwood Rear Rotor Hat with Negative Offset, Minus 0.090 Inch","description":"\u003cp\u003eNegative 0.090-inch offset is essential to this Wilwood rear hat's location. Match the 12 x 8.75-inch rotor circle and 5 x 4.50-inch flange. Established in 1977 by Bill Wood, Camarillo, California-based Wilwood Engineering designs and manufactures disc brake systems. Its master cylinders, calipers, brake rotors, lines, fittings and valves support motorsport, street-performance and specialized applications, with each component selected for its role in 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 170-12471\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePosition in the specified brake assembly:\u003c\/strong\u003e Rear\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHat offset:\u003c\/strong\u003e -0.090 inch\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRotor attachment interface:\u003c\/strong\u003e 12 x 8.75 inches; rotor attachment, separate from the hub flange\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHub-flange mounting\/clearance pattern(s):\u003c\/strong\u003e 5 x 4.50 inches; verify the actual hub and wheel-stud clearance\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCenter register diameter:\u003c\/strong\u003e 3.06 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRotor mounting hole\/thread designation:\u003c\/strong\u003e 1\/4-20\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInternal clearance diameter:\u003c\/strong\u003e 8.25 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMounting-face thickness:\u003c\/strong\u003e 0.31 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHub-side hole clearance diameter(s):\u003c\/strong\u003e 0.580 inches; these are clearance dimensions, not wheel-stud thread sizes\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer-listed attachment hardware reference:\u003c\/strong\u003e 230-8008; verify the specific rotor and attachment arrangement before ordering hardware\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer installation note:\u003c\/strong\u003e 3.06 \" diameter register with counterbore for register ring.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eComponent:\u003c\/strong\u003e Short-Offset Brake Rotor Hat\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e Aluminum\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSurface finish:\u003c\/strong\u003e Black E-Coat\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRotor mounting method:\u003c\/strong\u003e Fixed Mount\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFitment \u0026amp; Compatibility\u003c\/h3\u003e\u003cp\u003eIdentify the installed brake conversion before choosing this hat for Matched twelve-bolt brake systems. The offset, center register and attachment hardware must agree with the rotor and hub in that assembly. Select the rotor and attachment hardware separately for the documented assembly. Follow the installation drawing for engagement and clearance at every mounting point.\u003c\/p\u003e\u003ch3\u003eManufacturer Reference\u003c\/h3\u003e\u003cp\u003e\u003ca href=\"https:\/\/www.wilwood.com\/Hats\/HatProd?itemno=170-12471\"\u003eWilwood component specifications and dimensions\u003c\/a\u003e\u003c\/p\u003e\u003cp\u003eFor fitment assistance backed by more than 20 years of experience, share the installed brake configuration with PMB Performance before ordering.\u003c\/p\u003e","brand":"Wilwood","offers":[{"title":"Default Title","offer_id":67730117853362,"sku":"170-12471","price":236.52,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0521\/8792\/2610\/files\/Big_Brake_Inset_Offset-12blt-5lug-xl_f4aca911-4702-44bd-b329-a8df598bc7f4.jpg?v=1792173043","url":"https:\/\/pmbperformance.com\/products\/wilwood-170-12471","provider":"PMB Performance","version":"1.0","type":"link"}