{"product_id":"53-56-f-100-narrow-crossmember-kit-603-00","title":"53-56 F-100 NARROW CROSSMEMBER KIT - #603-00","description":"\u003cp\u003eThis is the complete kit for the F-100 chassis, 4.75\" narrow crossmember. It covers the following year ranges: 53-56 Ford trucks, half ton and 3\/4 ton as of November 2025. It's made to use 03-11 Ford Crown Victoria spindles (knuckles) rotors, calipers, brakes, tie rods, control arms and struts. You can also use this kit with tubular control arms, coilovers or airbags of the bellows type. Strut bags will also work with this kit.  \u003cbr\u003e\u003cbr\u003e*** You cannot run a narrow crossmember and also shorter control arms with air bags unless you run a small bag that clears like a SS6 or SE6. Shorter arms make for very little room and most larger bags will not clear. Especially bags that balloon out in the bellows. Look into Slam Specialties bags as they do not balloon out. \u003cbr\u003e\u003cbr\u003e*** You cannot run a narrow crossmember with shorter arms on the 80-96 F-100 chassis as those widen out at the front and the bag clearance is very little. \u003cbr\u003e\u003cbr\u003e*** To lay the frame on trucks with air ride you must also Z the frame ***\u003cbr\u003e\u003cbr\u003e*** The amount of Z depends on the diameter or your tire\/wheel combination ***\u003cbr\u003e\u003cbr\u003e*** The airbag mounts for the narrow crossmember come un welded ***\u003cbr\u003e\u003cbr\u003e*** The mounts can be welded in at any angle that fits your combination ***\u003cbr\u003e\u003cbr\u003eThe main crossmember section is the same for all years. The upper arm mount is available for the factory style CV struts or coil overs\/bags and is also the same for all years. The coil over mount is also a separate piece and works with any year range. The parts that are different for each year range are the frame boxes which fit inside the frame and the rear arm mounts. So you can select this listing and just let me know what year your truck is and what spring type you're running and we will send the correct parts. \u003cbr\u003e\u003cbr\u003eIncludes:\u003cbr\u003e\u003cbr\u003eMAIN CROSSMEMBER SECTION #601-01.\u003cbr\u003eThis is the same center section used in our other narrow crossmember kits. It's based on the design of the Crown Vic aluminum crossmember from 2003-2011 Crown Vics. It's 4.75\" narrower than the stock Crown Vic crossmember. It accepts factory Crown Vic upper and lower control arms, struts, spindles and brakes. It will also accept CPO tube control arms in stock length or 1\" shorter versions. The motor mount stands on this crossmember are the same width and height as the 2003-2011 Crown Vic. So any aftermarket mounts that fit the factory Crown Vic will fit this crossmember. We recommend Outcast Auto works for those. The others out there don't compare. They also have threaded inserts so you only need to bolt them down to the stands. Simple and easy. \u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003eUPPER CONTROL ARM MOUNTS\u003cbr\u003eThe upper control arm mount is specific to the type of spring\/shock you plan to use. You can add that info when ordering or if you haven't decided yet just wait until you do decide.  **** Pics are of the original style and the new style looks different. Updated pics soon ****\u003cbr\u003e\u003cbr\u003eREAR ARM MOUNT\u003cbr\u003eThese are the mounts from the frame down to the rear bushing mount on the factory Crown Vic lower control arms or the rear bushing on the CPO tube arms. **** Pics are of the original style and the new style looks different. Updated pics soon ****\u003cbr\u003eThis will also be available for the CPO A shaped lower arms that eliminate the rear control arm lower stud. \u003cbr\u003e\u003cbr\u003eFRAME BOXES\u003cbr\u003eThese are the boxes that bolt to the frame where the original engine crossmember was. The main crossmember section bolts to these boxes. **** Pics are of the original style and the new style looks different. Updated pics soon ****\u003cbr\u003eThese will be specific to the year range you have. \u003cbr\u003e\u003cbr\u003eWhat else you will need:\u003cbr\u003e\u003cbr\u003e1996 Lincoln Mark 8 steering rack. 1996 Ford Thunderbird has the same rack. This rack is 4.75\" narrower than the Crown Vic rack and is needed for correct steering. The Crown Vic outer tie rods fit this rack as they share the same M14 x 1.5 threads. There will be two M14 x 1.5 jam nuts in the box with the crossmember main section as well as two rack washers 1.75\" od x .635\" id x .188\" thick stainless, two 5\/8-11 x 3.5\" bolts and two 5\/8-11 flange locknuts. The rack can be bought in new or rebuilt at any local auto parts store or Rockauto. The part numbers are:\u003cbr\u003e\u003cspan\u003e1010115, 22215 and may have other part numbers at your local parts store. \u003cbr\u003e\u003cbr\u003e\u003c\/span\u003eFOR STOCK CROWN VIC CONTROL ARMS:\u003cbr\u003e**** You will need to cut 1.375\" off both ends of the rack and 1\" off the Crown Vic outer tie rod ends. ****\u003cbr\u003e\u003cbr\u003eFOR 1\" SHORTER CONTROL ARMS:  \u003cbr\u003e**** You will need to cut 2.375\" off the rack and 1\" off the Crown Vic outer tie rod ends. \u003cbr\u003e\u003cbr\u003eSteering U joints. Depending on what steering column you have you will need at least one steering U joint. They need to be 3\/4\"-36 spline to 3\/4\" DD. The 3\/4\"-36 spline is the same as the factory F-100 steering column. So if you have the factory column you would need two of those. They are available from Speedway, Jegs, Summit and even Amazon. \u003cbr\u003e\u003cbr\u003eSteering slip joint. You need a short section of 3\/4\" DD slip joint to go between the U joints. You may also need a 3\/4\" steering Heim joint and mount depending on steering column and location of the end of the column and the rack. \u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e\u003cbr\u003e\u003cbr\u003eI have some basic videos of the prototyping of this crossmember on Youtube. I will post a link here soon ---------\u0026gt;\u003c\/p\u003e","brand":"Chassis Parts Online","offers":[{"title":"Default Title","offer_id":52800425951511,"sku":null,"price":1250.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0794\/3441\/6407\/files\/20250911_083543.jpg?v=1757721421","url":"https:\/\/e465ba.myshopify.com\/products\/53-56-f-100-narrow-crossmember-kit-603-00","provider":"Chassis Parts Online","version":"1.0","type":"link"}