The ICON leaf spring component identified by manufacturer part number 178527 is engineered for the exact vehicle applications shown below. Match the year, make, model, drivetrain, suspension configuration, axle position, lift range, and every application note before ordering.
Key Features
- ICON's Rear Leaf Pack provides improved ride quality for 2011-2026 Chevrolet Silverado 2500 HD/3500 HD and GMC Sierra 2500 HD/3500 HD pickup trucks while maintianing factory rear ride height.
- This full replacement leaf back lowers the rear spring rate approximately 20% compared to stock as well as shifts the overload transition point higher in the suspension travel to improve small bump compliance.
Fitment
| Years | Make | Model | Application |
|---|---|---|---|
| 2011-2026 | Chevrolet | Silverado 2500 HD | Confirm drivetrain, suspension, axle position, lift height, factory options, and every requirement for this exact part number |
| 2011-2026 | Chevrolet | Silverado 3500 HD | Confirm drivetrain, suspension, axle position, lift height, factory options, and every requirement for this exact part number |
| 2011-2026 | GMC | Sierra 2500 HD | Confirm drivetrain, suspension, axle position, lift height, factory options, and every requirement for this exact part number |
| 2011-2026 | GMC | Sierra 3500 HD | Confirm drivetrain, suspension, axle position, lift height, factory options, and every requirement for this exact part number |
Specifications
| Brand | ICON |
|---|---|
| Manufacturer Part Number | 178527 |
| Product Type | Leaf Springs & Accessories |
| Fitment Type | Vehicle Specific |
| Condition | New |
| Position | Rear |
What's Included
One new ICON leaf spring component package identified by manufacturer part number 178527, in the position, finish, configuration, and quantity stated by the title. Opposite-side components, springs, reservoirs, controllers, hardware, wheels, tires, and service parts are included only when expressly listed for this exact part number.
About ICON
ICON Vehicle Dynamics develops suspension systems, coilovers, shock absorbers, control arms, lift components, wheels, and service parts for trucks, SUVs, and off-road vehicle applications.
Related ICON Products
- Shop all ICON products
- ICON 1996+ Toyota Tacoma / 00-06 Toyota Tundra 1.5in Add-A-Leaf Kit
- ICON 10-14 Ford Raptor Multi Rate Rxt Leaf Pack w/Add In Leaf
- ICON 2005+ Toyota Tacoma Multi Rate RXT Leaf Pack w/Add In Leaf
Frequently Asked Questions
How do I confirm this ICON part fits?
Match the exact part number, year, make, model, position, dimensions, and every application note.
What is included with this product?
Only the component, quantity, and hardware stated for the exact part number are included.
Should I test-fit the part before installation?
Yes. Verify the complete application, placement, clearance, and package contents before drilling, trimming, applying adhesive, or discarding packaging.
Installation Instructions
Read the current ICON instructions for part number 178527. Verify the complete application and package contents, support the vehicle safely, use the specified hardware and torque values, check hose and reservoir routing, confirm suspension and tire clearance through the full range of travel, align the vehicle when required, and recheck all fasteners after initial use.
Chevrolet Silverado 2500 HD Parts and Accessories
Shop Chevrolet Silverado 2500 HD parts for suspension work, Duramax service, exhaust projects and truck accessories at Black Ops Auto Works. Compare Bilstein, FOX and ICON suspension references, Exergy fuel-system choices, Wehrli cooling components and bed protection. Select parts around your generation, engine and work requirements.Bilstein, FOX and ICON SuspensionBilstein front reservoir and rear-shock references specify GM HD applications and ride-height requirements. FOX, King and ICON choices cover separate production ranges and suspension arrangements, with ICON also listing upper arms, tie rods and torsion-key components. Match chassis, drive configuration, current height and the complete system before comparing packages.Duramax Fuel and Cooling ComponentsExergy lists L5P pump and stock-replacement or increased-output injector references with separate coverage. Wehrli coolant tanks and upper pipes distinguish engine and production range, while Fleece service pieces address sp...
View Chevrolet Silverado 2500 HD Parts and Accessories Products
Chevrolet Silverado 3500 HD Parts and Accessories
Explore Chevrolet Silverado 3500 HD parts for suspension projects, Duramax service, exhaust work and truck accessories at Black Ops Auto Works. Compare Bilstein, FOX and ICON suspension references, Exergy fuel-system options, Wehrli cooling components and Husky bed protection around your truck configuration.Suspension for the Installed HD ChassisBilstein front reservoir and rear-shock references carry specific production and height coverage. ICON lists shocks, upper arms, tie rods and a single-rear-wheel leaf-pack reference; FOX and King offer separate applications. Match drive configuration, rear-wheel layout, factory equipment and current ride height before comparing complete systems.Duramax Fuel and Cooling ComponentsExergy L5P pump and injector references distinguish replacement and increased-output choices. Wehrli coolant tanks and upper pipes identify different production ranges, and Fleece lists engine-specific service pieces. Match engine code, fuel-system specifications, co...
View Chevrolet Silverado 3500 HD Parts and Accessories Products
Chevrolet Silverado Parts & Accessories
Explore Chevrolet Silverado parts and accessories for your next truck project at Black Ops Auto Works. Compare intake and exhaust options, suspension systems, brake-service parts, running boards, floor protection and bed accessories. Start with the correct 1500, HD or EV application, then narrow the choices to your truck’s engine and body configuration.Intake and Exhaust Choices by EngineReview K&N intake references, BBK headers and Borla cat-back choices for their stated gasoline-engine applications. MagnaFlow HD filter-back references serve separate diesel exhaust configurations. Match engine, production, cab, bed and wheelbase before comparing system layout, filter style, materials or tip finish.Suspension for 1500 and HD ProjectsBilstein references distinguish replacement and specific-height applications. FOX and Camburg upper arms name separate 1500 ranges, while GM HD shock references have their own chassis and height coverage. Plan suspension parts as a compatible arrange...
View Chevrolet Silverado Parts & Accessories Products
Chevrolet Silverado Parts and Accessories
Shop Chevrolet Silverado performance parts, service components and truck accessories at Black Ops Auto Works. Build a focused order for intake or exhaust work, suspension changes, brake maintenance or everyday protection. Compare engine-specific choices and body-specific accessories for the Silverado configuration you drive.Gasoline-Engine Intake and Exhaust ProjectsCompare K&N NextGen intake references, BBK shorty headers and Borla S-Type exhaust choices using the stated engine and production coverage. J&L and Mishimoto oil-separation references offer separate engine applications. Match the full installation to your intake, exhaust and engine equipment before choosing components.HD Diesel Service and Exhaust ReferencesWehrli coolant tanks and upper pipes distinguish L5P engine and production applications, while Fleece lists LML service pieces. MagnaFlow filter-back references specify separate HD exhaust coverage. Identify engine code, body and wheelbase, then review the com...
View Chevrolet Silverado Parts and Accessories Products
GMC Sierra 2500 HD Parts and Accessories
Explore GMC Sierra 2500 HD parts and accessories at Black Ops Auto Works for suspension projects, truck protection, brake service and engine maintenance. Compare FOX, Bilstein, ICON, Fleece, Wehrli and other listed choices within their complete applications. Match actual generation, engine, cab/bed and factory equipment first.HD Suspension and Steering ChoicesFOX, Bilstein, ICON and King shock references distinguish production ranges, axle positions, adjustment arrangements and supported ride heights. Match actual chassis and factory suspension before comparing separate dampers with complete systems. ICON arms, torsion keys, tie rods, leaf packs and electronic-control/install components have separate compatibility and companion-part requirements. Confirm single/dual-rear-wheel restrictions where specified and review the entire supported combination.Diesel Service and Exhaust ApplicationsFleece, Wehrli and Exergy titles distinguish engine codes, pumps, injectors, coolant components a...
View GMC Sierra 2500 HD Parts and Accessories Products
GMC Sierra 3500 HD Parts and Accessories
Explore GMC Sierra 3500 HD parts and accessories at Black Ops Auto Works for chassis projects, truck protection, engine service and brake maintenance. Compare FOX/Bilstein/ICON shocks, Fleece/Wehrli diesel inquiries, Husky protection and other listed choices. Match exact generation, engine, cab/bed and single/dual-rear-wheel equipment first.Suspension Systems and Brake ServiceShock references distinguish production ranges, axle positions, adjustment arrangements and supported ride heights. Match actual chassis, factory equipment and mounting/operating requirements before comparing dampers. ICON arms, torsion keys, tie rods, leaf packs and control/install components require a supported full-system combination; review SRW restrictions where specified. A Firestone all-in-one air-spring reference has its own complete chassis and mounting requirements. PowerStop pads, kits and side-specific rotors need exact installed brake dimensions, axle/side and full application.Diesel Service and Ex...
View GMC Sierra 3500 HD Parts and Accessories ProductsICON
Shop ICON Vehicle Dynamics suspension systems, coilovers, shocks, control arms and ICON Alloys wheels at Black Ops Auto Works. Compare a complete staged suspension package with individual components for the work you have planned. Choose around your vehicle, factory equipment, accessory load and intended ride height.Staged Suspension Systems and Arm ChoicesICON system listings offer different stages and tubular or billet upper-control-arm configurations within specific vehicle applications. Review the components supplied at each stage rather than using the stage number as a universal specification. F-150, Super Duty, Tacoma and other applications have separate drivetrain, production and equipment requirements.Coilovers, Shocks and Damping ConfigurationsCompare individual coilovers and rear shocks with the lift range, spring specification and damping configuration required by your project. The catalog includes VS reservoir, CDCV and CDEV references, plus extended-travel applications. ...
View ICON Products
Leaf Springs & Accessories
Leaf springs and leaf spring accessories for trucks, SUVs, and off road builds are stocked at Black Ops Auto Works. Shop add a leaf kits, helper springs, replacement leaf spring packs, lowering flip kits, U-bolts, shackles, bushings, center pins, and tie bolts for Ford F-150, F-250, Ram 1500, 2500, and 3500, Toyota Tacoma and Tundra, Nissan Titan and Frontier, and Chevrolet and GMC truck platforms from Hellwig, Tuff Country, ICON, Skyjacker, MaxTrac, and ARB. Every leaf spring product is filterable by year, make, model, trim, cab configuration, and drivetrain so the correct pack rate, arch, and load rating ships the first time. Black Ops Auto Works carries 657 leaf spring SKUs across add a leaf, helper spring, replacement pack, and hardware categories. What This Collection Covers Leaf springs remain the primary rear suspension design on most half ton, three quarter ton, and one ton trucks because they handle high load capacity and towing duty better than coil or multi link desig...
View Leaf Springs & Accessories Products
Suspension
Suspension parts and complete kits for cars, trucks, SUVs, Jeeps, and off-road builds are stocked at Black Ops Auto Works. Shop coilovers, lowering springs, lift kits, leveling kits, shocks and struts, sway bars, control arms, tie rods, ball joints, bushings, chassis bracing, alignment hardware, air suspension, and complete stage kits from Bilstein, KW, Ohlins, Fox, KING, ICON, BC Racing, Silvers, Eibach, H&R, Swift Springs, Whiteline, Energy Suspension, Moog, SPC Performance, Rough Country, ReadyLIFT, BDS, Skyjacker, Air Lift, Firestone, and Black Ops Auto Works. Start with a matched shock and spring package or a full coilover kit, then layer in sway bars, chassis bracing, and camber adjustment hardware. Every part is filterable by year, make, model, trim, and drivetrain to confirm fitment before ordering. What This Category Covers Suspension is the highest-leverage handling upgrade on any vehicle. A properly matched shock, spring, and sway bar package produces measurable i...
View Suspension Products


