{"product_id":"wilwood-270-7631","title":"Wilwood Front Hat-Mount Hub for Chevrolet Tri-Five (1955–1957)","description":"\u003cp\u003eThe hat-mount Wilwood hub for 1955–1957 Chevrolet Tri-Five front assemblies places the brake rotor on a separate aluminum hat. Its 1.520-inch N dimension identifies this geometry apart from the adapter-mounted vented-rotor hub. Wilwood Engineering’s disc-brake range covers calipers, brake rotors, master cylinders, valves, fittings and brake lines for motorsport, street-performance and specialized systems. Bill Wood founded the company in 1977, and its base is Camarillo, California. Each part is chosen to suit the operating and installation requirements of the whole brake system.\u003c\/p\u003e\u003ch3\u003eTechnical Details\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer part number:\u003c\/strong\u003e 270-7631\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e Aluminum\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFinish:\u003c\/strong\u003e Bare\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePosition:\u003c\/strong\u003e Front\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWheel bolt pattern:\u003c\/strong\u003e 5 x 4.75 in; 5 x 4.50 in\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWheel stud thread:\u003c\/strong\u003e 1\/2-20\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIncluded:\u003c\/strong\u003e Bearing races and screw-on aluminum cap\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 3.1 lb\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInner bearing specification:\u003c\/strong\u003e 370-0879 \/ A6 set (fitment reference)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOuter bearing specification:\u003c\/strong\u003e 370-0877 \/ A2 set (fitment reference)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDrawing dimension N:\u003c\/strong\u003e 1.520 inches\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFitment \u0026amp; Compatibility\u003c\/h3\u003e\u003cp\u003eMatch the Tri-Five spindle and rotor-hat package to the complete dimensional drawing. Confirm the hat sits squarely on the hub and uses the specified three 1\/4-20 retention screws.\u003c\/p\u003e\u003ch3\u003eManufacturer Documents\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/www.wilwood.com\/PDF\/DataSheets\/ds719.pdf\" target=\"_blank\" rel=\"noopener\"\u003eWilwood DS719 technical document\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/www.wilwood.com\/Hubs\/HubProd.aspx?itemno=270-7631\" target=\"_blank\" rel=\"noopener\"\u003eWilwood product information\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cem\u003eThe photograph represents the product family. Match the ordered configuration using the part number and specifications above.\u003c\/em\u003e\u003c\/p\u003e\u003cp\u003eContact PMB Performance with the existing part identification and brake-system configuration for selection assistance. We draw on over 20 years of experience with parts and fitment.\u003c\/p\u003e","brand":"Wilwood","offers":[{"title":"Default Title","offer_id":67700918223026,"sku":"270-7631","price":180.82,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0521\/8792\/2610\/files\/Big_Brake-xl_2911b9da-9b4c-44f3-bb85-b06fcdaea8cd.jpg?v=1792076133","url":"https:\/\/pmbperformance.com\/products\/wilwood-270-7631","provider":"PMB Performance","version":"1.0","type":"link"}