{"product_id":"73-87-chevy-gmc-c10-rear-frame-crossmember-bolt-on","title":"73-87 Chevy \u0026 GMC C10 Rear Frame Crossmember (Bolt-On)","description":"\u003cp\u003e\u003cspan style=\"text-decoration: underline;\"\u003e\u003cstrong\u003e73-87 Rear Frame Crossmember - # 130-8300\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eSquarebody trucks are built like tanks—until you cut them up to lay them low. If you've notched or backhalved your \u003cb\u003e1973–1987 C10\u003c\/b\u003e, you've likely removed the factory rear crossmember, leaving the tail end of your open C-channel frame free to twist, flex, and stress under load.\u003c\/p\u003e\n\u003cp\u003eThis heavy-duty, \u003cb\u003ebolt-in crossmember\u003c\/b\u003e is the ultimate chassis fix. It bridges the gap between your rear frame rails, \u003cb\u003eboxing the rear section\u003c\/b\u003e to easily handle modern drivetrain torque and aggressive aftermarket suspension setups.\u003c\/p\u003e\n\u003cp\u003eForget trying to hold heavy steel in place while guessing at alignment. Our design utilizes innovative \u003cb\u003einternal sliding sleeves\u003c\/b\u003e that slide right inside the frame channels. They act as a built-in alignment jig, squaring up the chassis perfectly and creating a bulletproof, double-walled connection once bolted down.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eKey Features \u0026amp; Benefits\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003eDesigned specifically for \u003cstrong\u003e1973-1987 C10 frames\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eReclaims structural integrity\u003c\/strong\u003e lost during aggressive drops and C-notch installs.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eEnd to \u003cb\u003eC-channel frame flex\u003c\/b\u003e, bed misalignment, and long-term \u003cstrong\u003emetal fatigue.\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eBolt-in \u003c\/strong\u003edesign with internal frame\u003cstrong\u003e inlays for added support\u003c\/strong\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch3\u003eDesign \u0026amp; Construction\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eASTM A1011\u003c\/strong\u003e hot-rolled steel \u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003ePrecision-cut for consistent fitment\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eInternal \u003cstrong\u003eframe inlays slide into the frame rails\u003c\/strong\u003e for added strength\u003cbr\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch3\u003eDimensions \u0026amp; Specs\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eWeight:\u003c\/strong\u003e 18 lbs\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eOverall Length:\u003c\/strong\u003e 32.5 inches\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eFrame Rail Inlays:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003eHeight: 4.25 inches\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eDepth: 2.5 inches\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eCrossmember Face:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003eHeight: 4.5 inches\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eDepth: 2.75 inches\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch3\u003eVehicle Fitment\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003e1973-1987 Chevy \u0026amp; GMC C10 Trucks\u003c\/strong\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch3\u003eInstallation Notes\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003eInlays slide into frame rails to \u003cstrong\u003ealign with OEM bed mount holes\u003c\/strong\u003e. (\u003cem\u003eLonger bolts may be required for bed variant)\u003c\/em\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eOn rare occasions,\u003c\/strong\u003e since the stock frame rails have nothing supporting the rear, they tend to bow in over time, narrowing close to an inch; this will require spreading the frame rails via porta power or another accessible tool.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eWelding not required\u003c\/strong\u003e \u003cem\u003e(can be welded if desired)\u003c\/em\u003e\u003cem\u003e\u003c\/em\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch4\u003eWhat’s Included\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli dir=\"ltr\"\u003e\n\u003cp dir=\"ltr\" role=\"presentation\"\u003e\u003cspan\u003e\u003cstrong\u003e(1)\u003c\/strong\u003e Rear Frame Crossmember with Logo\u003c\/span\u003e\u003cspan\u003e\u003cbr\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli dir=\"ltr\"\u003e\n\u003cp dir=\"ltr\" role=\"presentation\"\u003e\u003cspan\u003e\u003cstrong\u003e(2)\u003c\/strong\u003e 3\/8 x 1.25\" Bolts\u003c\/span\u003e\u003cspan\u003e\u003cbr\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli dir=\"ltr\"\u003e\n\u003cp dir=\"ltr\" role=\"presentation\"\u003e\u003cspan\u003e\u003cstrong\u003e(2)\u003c\/strong\u003e 1\/2 x 1.25\" Bolts\u003c\/span\u003e\u003cspan\u003e\u003cbr\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli dir=\"ltr\"\u003e\n\u003cp dir=\"ltr\" role=\"presentation\"\u003e\u003cspan\u003e\u003cstrong\u003e(4)\u003c\/strong\u003e 3\/8 Washers\u003c\/span\u003e\u003cspan\u003e\u003cbr\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli dir=\"ltr\"\u003e\n\u003cp dir=\"ltr\" role=\"presentation\"\u003e\u003cspan\u003e\u003cstrong\u003e(4)\u003c\/strong\u003e 1\/2 Washers\u003c\/span\u003e\u003cspan\u003e\u003cbr\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli dir=\"ltr\"\u003e\n\u003cp dir=\"ltr\" role=\"presentation\"\u003e\u003cspan\u003e\u003cstrong\u003e(2)\u003c\/strong\u003e 3\/8 Nylock Nuts \u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli dir=\"ltr\"\u003e\n\u003cp dir=\"ltr\" role=\"presentation\"\u003e\u003cspan\u003e\u003cstrong\u003e(2)\u003c\/strong\u003e 1\/2 Nylock Nuts\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch4\u003eCalifornia Proposition 65 Warning\u003c\/h4\u003e\n\u003cp\u003eCancer and Reproductive Harm – \u003ca rel=\"noopener\" class=\"decorated-link\" href=\"http:\/\/www.p65warnings.ca.gov\"\u003ewww.p65warnings.ca.gov\u003c\/a\u003e\u003c\/p\u003e\n\u003chr\u003e\n\u003ch4\u003eQuestions? Contact Us\u003c\/h4\u003e\n\u003cp\u003e\u003cspan\u003e(480) 940 1806 – \u003cstrong\u003eLocal\u003c\/strong\u003e\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003e1 (877) 951-1890 – \u003cstrong\u003eToll Free\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e","brand":"GSI Machine and Fabrication","offers":[{"title":"Default Title","offer_id":50499624075324,"sku":"130-8300-RFCM","price":125.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0632\/5934\/4956\/files\/not_perm.png?v=1790048137","url":"https:\/\/rpm-racing.com\/products\/73-87-chevy-gmc-c10-rear-frame-crossmember-bolt-on","provider":"Racing Precision Motorsports","version":"1.0","type":"link"}