{"product_id":"rotora-hdexplorer-355x29-rear-brake-system-2020-2026-ford-explorer-st","title":"Ford Explorer 2020-2026 HD Challenge Rear Brake System","description":"\u003ch4\u003eComplete Rear Brake System Upgrade for the 2020-2026 Ford Explorer ST 3.0L EcoBoost\u003c\/h4\u003e\n\u003cp\u003eThe Rotora HDExplorer-355x29 is a purpose-built rear brake system replacement for the 2020-2026 Ford Explorer ST. This is a full system, not a rotor upgrade. Every component needed to replace the factory rear brake assembly is included: ductile iron calipers with stainless steel pistons, 355x29mm directional disc rings in your choice of Slotted or Drilled finish, 2-piece bell hats with HD float drive hardware, carbon steel caliper brackets with hardware, HD graphite-metallic brake pads, DOT-compliant stainless steel braided brake lines, and an Electronic Parking Brake Bypass (EPBB) module that maintains full integration with the Explorer ST's factory electric parking brake. The HD Challenge series was engineered for light-duty and medium-duty SUVs that are used for serious towing, hauling, and off-road work where the factory brake system is not sized for sustained high-load use. The HDExplorer-355x29 is 100% application-specific to the Explorer ST, with full compatibility to the stock master cylinder, ABS, and traction control requiring no ECU reprogramming beyond the EPBB module installation.\u003c\/p\u003e\n\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003eComplete rear brake system for 2020-2026 Ford Explorer ST including calipers, rotors, hats, brackets, pads, brake lines, and EPBB module\u003c\/li\u003e\n\u003cli\u003e355x29mm directional 2-piece disc rings in Slotted or Drilled finish\u003c\/li\u003e\n\u003cli\u003eDuctile iron calipers with stainless steel pistons and dust boot seals\u003c\/li\u003e\n\u003cli\u003eS45C steel bell hats with stainless steel HD float drive hardware\u003c\/li\u003e\n\u003cli\u003eCarbon steel (S45C) caliper brackets with full hardware\u003c\/li\u003e\n\u003cli\u003eHD graphite-metallic brake pads with enlarged pad area for higher thermal capacity and longer pad life\u003c\/li\u003e\n\u003cli\u003eDOT-compliant stainless steel braided brake lines for stiffer pedal feel and zero hose expansion under load\u003c\/li\u003e\n\u003cli\u003eElectronic Parking Brake Bypass (EPBB) module for full factory EPB compatibility\u003c\/li\u003e\n\u003cli\u003eOversize airfoil slotted discs increase brake torque, thermal mass, disc life, and cooling airflow\u003c\/li\u003e\n\u003cli\u003e100% compatible with factory master cylinder, ABS, and traction control on 2020-2026 Explorer ST\u003c\/li\u003e\n\u003cli\u003eHigher-compound pad upgrades (H6, H8, H9) available by request at time of order\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch4\u003eFitment\u003c\/h4\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eYear Range\u003c\/th\u003e\n\u003cth\u003eMake\u003c\/th\u003e\n\u003cth\u003eModel\u003c\/th\u003e\n\u003cth\u003eTrim\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e2020-2026\u003c\/td\u003e\n\u003ctd\u003eFord\u003c\/td\u003e\n\u003ctd\u003eExplorer\u003c\/td\u003e\n\u003ctd\u003eST\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch4\u003eSpecifications\u003c\/h4\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eDetail\u003c\/th\u003e\n\u003cth\u003eValue\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003ePart Number\u003c\/td\u003e\n\u003ctd\u003eHDExplorer-355x29\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBrand\u003c\/td\u003e\n\u003ctd\u003eRotora\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSeries\u003c\/td\u003e\n\u003ctd\u003eHD Challenge\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePosition\u003c\/td\u003e\n\u003ctd\u003eRear Axle\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDisc Diameter x Thickness\u003c\/td\u003e\n\u003ctd\u003e355mm x 29mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDisc Construction\u003c\/td\u003e\n\u003ctd\u003e2-Piece (directional ring + bell hat)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRing Material\u003c\/td\u003e\n\u003ctd\u003eHeat-Treated, Zinc-Plated Cast Iron\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHat Material\u003c\/td\u003e\n\u003ctd\u003eS45C Steel with Stainless Steel HD Float Drive Hardware\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCaliper Material\u003c\/td\u003e\n\u003ctd\u003eDuctile Iron\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePiston Material\u003c\/td\u003e\n\u003ctd\u003eStainless Steel\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBracket Material\u003c\/td\u003e\n\u003ctd\u003eCarbon Steel (S45C)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eIncluded Pad Compound\u003c\/td\u003e\n\u003ctd\u003eHD Graphite-Metallic\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBrake Lines\u003c\/td\u003e\n\u003ctd\u003eDOT-Compliant Stainless Steel Braided\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eParking Brake Module\u003c\/td\u003e\n\u003ctd\u003eEPBB (Electronic Parking Brake Bypass) Included\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFinish Options\u003c\/td\u003e\n\u003ctd\u003eSlotted or Drilled\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eABS \/ Traction Control\u003c\/td\u003e\n\u003ctd\u003eFull OEM Compatible, No Recalibration Required\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFitment\u003c\/td\u003e\n\u003ctd\u003e2020-2026 Ford Explorer ST\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eUPC\u003c\/td\u003e\n\u003ctd\u003eContact vendor for UPC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch4\u003eWhat's Included\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003e2x ductile iron rear brake calipers with stainless steel pistons and dust boot seals\u003c\/li\u003e\n\u003cli\u003e2x 355x29mm directional disc rings (Slotted or Drilled per variant selected)\u003c\/li\u003e\n\u003cli\u003e2x S45C steel bell hats with stainless steel HD float drive hardware\u003c\/li\u003e\n\u003cli\u003e2x carbon steel (S45C) caliper brackets with full hardware kit\u003c\/li\u003e\n\u003cli\u003e1x set HD graphite-metallic rear brake pads\u003c\/li\u003e\n\u003cli\u003eDOT-compliant stainless steel braided rear brake lines\u003c\/li\u003e\n\u003cli\u003e1x Electronic Parking Brake Bypass (EPBB) module\u003c\/li\u003e\n\u003cli\u003eInstallation hardware and instructions\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch4\u003eAbout Rotora\u003c\/h4\u003e\n\u003cp\u003eRotora is a US-based manufacturer of high-performance brake systems developed for street, track, and severe-duty applications. The HD Challenge series was designed specifically for light-duty and medium-duty SUVs used in demanding towing, hauling, and off-road conditions where factory brakes are not built for sustained high-load cycles. Rotora applies engineering experience gained from supplying brake systems to armored vehicle, security, and military manufacturers. Every HD Challenge system is engineered application-specific to maintain full compatibility with factory master cylinder, ABS, and traction control without vehicle reprogramming.\u003c\/p\u003e\n\n\u003ch4\u003eFrequently Asked Questions\u003c\/h4\u003e\n\u003cstrong\u003eDoes the HDExplorer-355x29 require dealer programming or ECU recalibration after installation?\u003c\/strong\u003e\n\u003cp\u003eNo. The included EPBB module handles the electric parking brake integration on the 2020-2026 Explorer ST. Beyond installing the EPBB module per Rotora's instructions, no dealer visit, scan tool programming, or ECU recalibration is required. The system is plug-and-play with the factory ABS and traction control.\u003c\/p\u003e\n\n\u003cstrong\u003eDoes this fit all years of the Explorer ST from 2020 to 2026?\u003c\/strong\u003e\n\u003cp\u003eYes. The HDExplorer-355x29 is engineered to fit the 2020, 2021, 2022, 2023, 2024, 2025, and 2026 Ford Explorer ST. All model years in this range use the same rear brake architecture with the electric parking brake that requires the included EPBB module.\u003c\/p\u003e\n\n\u003cstrong\u003eWhat is the difference between the Slotted and Drilled variants?\u003c\/strong\u003e\n\u003cp\u003eBoth variants use the same 355x29mm 2-piece disc, calipers, pads, hardware, and EPBB module. The Slotted disc features directional curved slots that vent gas and continuously clean the pad surface under hard braking. The Drilled disc adds cross-drilled holes for greater heat venting and a more aggressive appearance. For primarily street and towing use, the Slotted disc is generally more durable under repeated severe-load braking. The Drilled disc is better suited to mixed street and track use where maximum heat venting is a priority.\u003c\/p\u003e\n\n\u003cstrong\u003eIs this a rotor replacement only, or does it replace the entire rear brake system?\u003c\/strong\u003e\n\u003cp\u003eThis is a complete rear brake system replacement. The HDExplorer-355x29 includes calipers, 355x29mm disc rings, bell hats, caliper brackets, HD brake pads, stainless steel brake lines, and the EPBB module. Nothing from the factory rear brake assembly is reused. The system is designed to be installed as a complete unit.\u003c\/p\u003e\n\n\u003cstrong\u003eIs the electric parking brake fully functional after installing the HDExplorer-355x29?\u003c\/strong\u003e\n\u003cp\u003eYes. The included EPBB module restores full electric parking brake function after installation on the 2020-2026 Explorer ST. The module must be installed per Rotora's wiring instructions before the parking brake is cycled. Do not attempt to use the electric parking brake before the EPBB module is connected.\u003c\/p\u003e\n\n\u003cstrong\u003eWill this fit non-ST Explorer trims?\u003c\/strong\u003e\n\u003cp\u003eThe HDExplorer-355x29 is engineered for the Explorer ST only. The ST uses a specific brake caliper and rotor package that differs from other Explorer trims. Confirm with Rotora before ordering if you have a non-ST Explorer, as bracket fitment and caliper clearance are not guaranteed on other trims.\u003c\/p\u003e\n\n\u003cstrong\u003eAre higher-compound brake pads available for track or extreme towing use?\u003c\/strong\u003e\n\u003cp\u003eYes. The HDExplorer-355x29 includes HD graphite-metallic pads as standard. Rotora offers H6 Street Track, H8 Track Race, and H9 Race compound upgrades for applications that require greater thermal capacity. Specify your pad compound preference at time of order through Black Ops Auto Works.\u003c\/p\u003e\n\n\u003cstrong\u003eWhat is the shipping lead time for the HDExplorer-355x29?\u003c\/strong\u003e\n\u003cp\u003eThe HD Challenge system is built to order. Lead time is typically 4-6 weeks from order confirmation. The system ships via UPS Ground or FedEx Ground in heavy-duty foam-lined packaging due to the oversize nature of the brake components.\u003c\/p\u003e\n\n\u003cstrong\u003eIs a bed-in procedure required?\u003c\/strong\u003e\n\u003cp\u003eYes. A proper bed-in procedure is required after installing new calipers, rotors, and pads to seat all components correctly and transfer an even pad deposit layer to the rotor surface. Perform the bed-in on a safe, open surface before any towing or aggressive driving. Follow the Rotora bed-in procedure included in the HDExplorer-355x29 documentation.\u003c\/p\u003e\n\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003col\u003e\n\u003cli\u003eSafely lift and support the Explorer ST at the rear axle. Remove both rear wheels.\u003c\/li\u003e\n\u003cli\u003eEnter brake service mode through the vehicle menu or a scan tool to retract the electric parking brake piston before removing the factory caliper. Skipping this step can damage the factory EPB actuator.\u003c\/li\u003e\n\u003cli\u003eRemove the factory rear caliper and bracket. Photograph brake line routing before disconnecting.\u003c\/li\u003e\n\u003cli\u003eRemove the factory rotor from the hub. Clean the hub flange surface of rust and debris before mounting the new disc assembly.\u003c\/li\u003e\n\u003cli\u003eInstall the Rotora caliper bracket with the supplied hardware. Torque to specification.\u003c\/li\u003e\n\u003cli\u003eInstall the 355x29mm 2-piece disc ring and bell hat assembly onto the hub. Verify the directional orientation of each rotor per Rotora's left and right markings.\u003c\/li\u003e\n\u003cli\u003eInstall the Rotora ductile iron caliper onto the bracket. Connect the stainless steel braided brake line and torque all fittings to specification.\u003c\/li\u003e\n\u003cli\u003eInstall the HD graphite-metallic rear brake pads with all hardware clips fully seated.\u003c\/li\u003e\n\u003cli\u003eWire and install the EPBB module per Rotora's dedicated EPBB installation instructions before reconnecting vehicle power or cycling the electric parking brake switch.\u003c\/li\u003e\n\u003cli\u003eBleed the rear brake circuit completely to remove all air from the new calipers and brake lines. Confirm firm pedal feel before reinstalling wheels.\u003c\/li\u003e\n\u003cli\u003eReinstall wheels and torque lug nuts to specification. Lower the vehicle.\u003c\/li\u003e\n\u003cli\u003ePerform Rotora's bed-in procedure on a safe surface before returning the vehicle to service.\u003c\/li\u003e\n\u003c\/ol\u003e\n\n\u003cp\u003e\u003cstrong\u003eWARNING:\u003c\/strong\u003e This product can expose you to chemicals including lead and phthalates, which are known to the State of California to cause cancer and reproductive harm. For more information go to www.P65Warnings.ca.gov.\u003c\/p\u003e","brand":"Rotora","offers":[{"title":"Slotted \/ Black","offer_id":40647758151759,"sku":"HDExplorer-355x29","price":3395.0,"currency_code":"USD","in_stock":true},{"title":"Slotted \/ Red","offer_id":46029062340687,"sku":null,"price":3395.0,"currency_code":"USD","in_stock":true},{"title":"Slotted \/ Blue","offer_id":46029062373455,"sku":null,"price":3395.0,"currency_code":"USD","in_stock":true},{"title":"Slotted \/ Yellow","offer_id":46029062406223,"sku":null,"price":3395.0,"currency_code":"USD","in_stock":true},{"title":"Slotted \/ Silver","offer_id":46029062438991,"sku":null,"price":3395.0,"currency_code":"USD","in_stock":true},{"title":"Slotted \/ White","offer_id":46029062471759,"sku":null,"price":3395.0,"currency_code":"USD","in_stock":true},{"title":"Slotted \/ Orange","offer_id":46029062504527,"sku":null,"price":3395.0,"currency_code":"USD","in_stock":true},{"title":"Slotted \/ Green","offer_id":46029062537295,"sku":null,"price":3395.0,"currency_code":"USD","in_stock":true},{"title":"Drilled \/ Black","offer_id":40647758184527,"sku":"HDExplorer-355x29","price":3395.0,"currency_code":"USD","in_stock":true},{"title":"Drilled \/ Red","offer_id":46029062570063,"sku":null,"price":3395.0,"currency_code":"USD","in_stock":true},{"title":"Drilled \/ Blue","offer_id":46029062602831,"sku":null,"price":3395.0,"currency_code":"USD","in_stock":true},{"title":"Drilled \/ Yellow","offer_id":46029062635599,"sku":null,"price":3395.0,"currency_code":"USD","in_stock":true},{"title":"Drilled \/ Silver","offer_id":46029062668367,"sku":null,"price":3395.0,"currency_code":"USD","in_stock":true},{"title":"Drilled \/ White","offer_id":46029062701135,"sku":null,"price":3395.0,"currency_code":"USD","in_stock":true},{"title":"Drilled \/ Orange","offer_id":46029062733903,"sku":null,"price":3395.0,"currency_code":"USD","in_stock":true},{"title":"Drilled \/ Green","offer_id":46029062766671,"sku":null,"price":3395.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1062\/7920\/files\/Rotora_Big_Brake_Kit_view.png?v=1783532926","url":"https:\/\/www.blackopsautoworks.com\/products\/rotora-hdexplorer-355x29-rear-brake-system-2020-2026-ford-explorer-st","provider":"Black Ops Auto Works","version":"1.0","type":"link"}