{"product_id":"fabtech-2025-gm-1500-4wd-4in-trail-boss-at4-component-box-2","title":"Fabtech 2025 GM 1500 4WD 4in Trail Boss\/AT4 - Component Box 2","description":"\u003cp class=\"p1\"\u003e\u003cstrong\u003eSKU\u003c\/strong\u003e: FTS21308 \/ \u003cstrong\u003eUPC\u003c\/strong\u003e: 674866136243\u003c\/p\u003e\n\u003ch4 class=\"p1\"\u003e\u003cb\u003eFabtech FTS21308 Component Box 2\u003c\/b\u003e\u003c\/h4\u003e\n\u003cp class=\"p1\"\u003eThe Fabtech Component Box 2, a key part of the complete 4-inch lift system designed exclusively for the 2025 Chevrolet Silverado 1500 4WD Trail Boss and 2025 GMC Sierra 1500 4WD AT4 models. This box delivers the rear suspension upgrades that add 4 inches of lift on top of the factory 2-inch setup, enabling clearance for 35-inch tires while preserving the original ride characteristics and load capacity. Compared to generic aftermarket options, the FTS21308 stands out with its precise engineering for these specific factory-lifted trucks, ensuring seamless integration, zero bump steer, and full steering lock without additional adjustments. Drivers report noticeable gains in ground clearance, approach angles, and overall trail capability, making it the direct path to enhanced daily and off-road driving for 2025 GM 1500 owners seeking reliable height without compromising handling or alignment.\u003c\/p\u003e\n\u003cp class=\"p1\"\u003e\u003cstrong\u003eNote\u003c\/strong\u003e: Product may vary from the image above reference only!\u003c\/p\u003e\n\u003cp class=\"p1\"\u003e\u003cb\u003eVehicle Fitment Details\u003c\/b\u003e\u003c\/p\u003e\n\u003cp class=\"p1\"\u003eThis component box fits only the following configurations:\u003c\/p\u003e\n\u003cul class=\"ul1\"\u003e\n\u003cli class=\"li1\"\u003e\n\u003cspan class=\"s1\"\u003e\u003c\/span\u003e\u003cb\u003eYear\u003c\/b\u003e: 2025\u003c\/li\u003e\n\u003cli class=\"li1\"\u003e\n\u003cspan class=\"s1\"\u003e\u003c\/span\u003e\u003cb\u003eMake\/Model\u003c\/b\u003e: Chevrolet Silverado 1500 4WD Trail Boss (Crew Cab, Short Bed)\u003c\/li\u003e\n\u003cli class=\"li1\"\u003e\n\u003cspan class=\"s1\"\u003e\u003c\/span\u003e\u003cb\u003eMake\/Model\u003c\/b\u003e: GMC Sierra 1500 4WD AT4 (Crew Cab, Short Bed)\u003c\/li\u003e\n\u003cli class=\"li1\"\u003e\n\u003cspan class=\"s1\"\u003e\u003c\/span\u003e\u003cb\u003eEngine\u003c\/b\u003e: V8 Gas\u003c\/li\u003e\n\u003cli class=\"li1\"\u003e\n\u003cspan class=\"s1\"\u003e\u003c\/span\u003e\u003cb\u003eDrive Type\u003c\/b\u003e: 4WD\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cspan class=\"s1\"\u003e\u003c\/span\u003e\u003cb\u003eExclusions\u003c\/b\u003e: Does not fit models with adaptive ride control, composite rear leaf springs, or Super Cruise. Requires non-OEM wheels and tires for proper operation.\u003c\/p\u003e\n\u003cp class=\"p1\"\u003ePair this with Fabtech's full 4-inch Basic System (kit number K1136) for complete installation, including front components in Component Box 1 (FTS21250 or equivalent for 2025) and rear performance shocks (FTS7240, quantity 2).\u003c\/p\u003e\n\u003cp class=\"p1\"\u003e\u003cb\u003eWhat's Included in the Component Box 2 Purchase\u003c\/b\u003e\u003c\/p\u003e\n\u003cp class=\"p1\"\u003eEvery FTS21308 box contains precision-machined rear suspension parts built from heavy-duty 1\/4-inch steel and billet aluminum for corrosion resistance and strength under load. Here's the full breakdown:\u003c\/p\u003e\n\u003ctable cellspacing=\"0\" cellpadding=\"0\" class=\"t1\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd valign=\"top\" class=\"td1\"\u003e\n\u003cp class=\"p1\"\u003e\u003cb\u003ePart Description\u003c\/b\u003e\u003cb\u003e\u003c\/b\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd valign=\"top\" class=\"td1\"\u003e\n\u003cp class=\"p1\"\u003e\u003cb\u003eQuantity\u003c\/b\u003e\u003cb\u003e\u003c\/b\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd valign=\"top\" class=\"td1\"\u003e\n\u003cp class=\"p1\"\u003e\u003cb\u003ePart Number\/Sub-Component\u003c\/b\u003e\u003cb\u003e\u003c\/b\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd valign=\"top\" class=\"td1\"\u003e\n\u003cp class=\"p1\"\u003e\u003cb\u003eMaterial\/Specification\u003c\/b\u003e\u003cb\u003e\u003c\/b\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd valign=\"top\" class=\"td1\"\u003e\n\u003cp class=\"p1\"\u003eRear Lift Blocks\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd valign=\"top\" class=\"td1\"\u003e\n\u003cp class=\"p1\"\u003e2\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd valign=\"top\" class=\"td1\"\u003e\n\u003cp class=\"p1\"\u003eIncluded in FTS21308\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd valign=\"top\" class=\"td1\"\u003e\n\u003cp class=\"p1\"\u003e5-inch tall steel blocks; replaces factory blocks to maintain axle alignment and payload rating\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd valign=\"top\" class=\"td1\"\u003e\n\u003cp class=\"p1\"\u003eRear U-Bolts\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd valign=\"top\" class=\"td1\"\u003e\n\u003cp class=\"p1\"\u003e4\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd valign=\"top\" class=\"td1\"\u003e\n\u003cp class=\"p1\"\u003eIncluded in FTS21308\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd valign=\"top\" class=\"td1\"\u003e\n\u003cp class=\"p1\"\u003eExtended zinc-plated steel; secures rear differential to lift blocks\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd valign=\"top\" class=\"td1\"\u003e\n\u003cp class=\"p1\"\u003eRear Bump Stop Spacers\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd valign=\"top\" class=\"td1\"\u003e\n\u003cp class=\"p1\"\u003e2\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd valign=\"top\" class=\"td1\"\u003e\n\u003cp class=\"p1\"\u003eIncluded in FTS21308\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd valign=\"top\" class=\"td1\"\u003e\n\u003cp class=\"p1\"\u003eBillet aluminum spacers; relocates factory closed-cell bump stops to prevent over-travel damage\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp class=\"p1\"\u003eThese components bolt directly to factory mounting points, requiring no cutting or welding. Installation typically takes 6-8 hours with basic tools, and all hardware (bolts, nuts, washers) is provided for a straightforward rear-end upgrade.\u003c\/p\u003e\n\u003cp class=\"p1\"\u003e\u003cb\u003eShipping and Packaging Specifications\u003c\/b\u003e\u003c\/p\u003e\n\u003cul class=\"ul1\"\u003e\n\u003cli class=\"li1\"\u003e\n\u003cspan class=\"s1\"\u003e\u003c\/span\u003e\u003cb\u003eUPC\u003c\/b\u003e: 674866136243\u003c\/li\u003e\n\u003cli class=\"li1\"\u003e\n\u003cspan class=\"s1\"\u003e\u003c\/span\u003e\u003cb\u003eSKU\u003c\/b\u003e: FTS21308\u003c\/li\u003e\n\u003cli class=\"li1\"\u003e\n\u003cspan class=\"s1\"\u003e\u003c\/span\u003e\u003cb\u003eShipping Weight\u003c\/b\u003e: Not specified by manufacturer (estimated 25-30 lbs based on similar rear kits)\u003c\/li\u003e\n\u003cli class=\"li1\"\u003e\n\u003cspan class=\"s1\"\u003e\u003c\/span\u003e\u003cb\u003eBox Dimensions\u003c\/b\u003e: 14.10 inches (width) x 13.60 inches (height) x 27.50 inches (depth)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cspan class=\"s1\"\u003e\u003c\/span\u003e\u003cb\u003eShipping Notes\u003c\/b\u003e: Ships via ground freight oversized packaging may incur additional carrier fees depending on location.\u003c\/p\u003e\n\u003cp class=\"p1\"\u003eThe Fabtech FTS21308 Component Box 2 completes the rear of your 2025 GM 1500 4-inch lift setup, delivering the height and capability that outpaces standard spacers or blocks from other brands. Built in the USA with rigorous testing for these exact models, it supports aggressive tire sizes while keeping highway stability intact ideal for truck owners who demand fit and function tailored to their Trail Boss or AT4.\u003c\/p\u003e\n\u003cp class=\"p1\"\u003eOrder now to transform your 2025 Silverado 1500 or Sierra 1500 into a capable all-terrain performer.\u003c\/p\u003e","brand":"Fabtech","offers":[{"title":"Default Title","offer_id":43617380270159,"sku":"FABFTS21308","price":655.52,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1062\/7920\/files\/Rough-Country-2-Leveling-Kit-for-2022-2024-Nissan-Titan-4WD-861_36d56dd2-9a21-4a6d-a3e2-01822732adcf.d44b6926846490f635abaaa08893637e.jpg?v=1758568763","url":"https:\/\/www.blackopsautoworks.com\/products\/fabtech-2025-gm-1500-4wd-4in-trail-boss-at4-component-box-2","provider":"Black Ops Auto Works","version":"1.0","type":"link"}