This AST Suspension 2004-11/2012 Chrysler 300C Lowering Springs – 30mm/30mm is a vehicle-specific lowering spring set selected by exact part number, chassis, drivetrain, body style, suspension configuration, and stated front and rear drop. Confirm every application note before ordering.

Key Features

• 30mm Front 30mm Rear Drop: Lowers ride height for sharper cornering stability and aggressive stance.
• Vehicle Specific Engineering: Perfect direct bolt-on fit for 2005-2012 Chrysler 300C without modifications.
• Progressive Spring Rate: Delivers smooth ride on streets firmer response during spirited drives.
• High-tensile strength steel coiled on Wafios machines for superior durability and fatigue resistance.
• Wheel alignment required after installation to ensure proper handling.
• Direct replacement uses OEM struts shocks and mounting hardware.

Fitment

Specifications

What’s Included

One new AST Suspension product in the exact part number, dimensions, rate, adjustment specification, and quantity identified on this page. Springs, dampers, top mounts, reservoirs, adjusters, links, tools, lines, fittings, and hardware are included only when expressly stated for this exact configuration.

About AST Suspension

AST Suspension develops performance springs, dampers, coilovers, top mounts, and motorsport suspension components. Vehicle fitment, dimensions, rates, adjustment functions, and included components remain exact-part specific.

Related Parts

• Shop the complete AST Suspension collection
• Shop suspension components
• AST 2004-05/2011 Chrysler 300C Lowering Springs – 30mm
• AST 2004-05/2011 Chrysler 300C Lowering Springs – 30mm
• AST 2004-11/2012 Chrysler 300C Lowering Springs – 30mm/30mm

Frequently Asked Questions

How do I confirm these springs fit my vehicle?
Match the exact year, make, model, chassis, drivetrain, body style, engine, factory suspension, axle-load notes, and AST part number.

Will I need an alignment after installing lowering springs?
Yes. Measure ride height after the springs settle, then perform a complete alignment and verify tire, wheel, brake-line, and suspension clearance.

Can these springs be used with factory dampers?
Only when the exact AST application permits it. Check damper condition, available travel, bump-stop requirements, and every product-specific suspension note.

Is the advertised drop exact on every vehicle?
The stated drop is a target for the listed configuration. Actual ride height can vary with equipment, vehicle weight, spring isolators, damper condition, and prior suspension changes.

Installation Instructions

1. Confirm the exact AST part number, complete application or dimensional specification, included components, and current instructions before disassembly.
2. Support the vehicle at approved points and record the original ride height, alignment, suspension orientation, and adjustment settings.
3. Install components in the specified position and sequence using correct spring-compression, torque, preload, ride-height, and damper setup procedures.
4. Verify full suspension and steering travel, tire and wheel clearance, brake-line routing, fastener torque, and damper operation.
5. Settle the suspension, measure final ride height, complete a professional alignment, and recheck the installation after the initial driving cycles.

This AST Suspension 2004-11/2012 Chrysler 300C Lowering Springs – 30mm/30mm is a vehicle-specific lowering spring set selected by exact part number, chassis, drivetrain, body style, suspension configuration, and stated front and rear drop. Confirm every application note before ordering.

Key Features

• 30mm Front/Rear Drop: Lowers ride height evenly for aggressive stance and reduced body roll during corners.
• Progressive Spring Design: Provides linear response with OEM comfort on smooth roads and firmer support under load.
• Bolt-on compatible with factory struts shocks and control arms no modifications needed.
• High-tensile spring steel coiled on Wafios machines for superior strength and corrosion resistance.
• Wheel alignment required after installation to maintain tire wear and handling.
• Pair with upgraded shocks for full performance gains inspect OEM components during swap.

Fitment

Specifications

What’s Included

One new AST Suspension product in the exact part number, dimensions, rate, adjustment specification, and quantity identified on this page. Springs, dampers, top mounts, reservoirs, adjusters, links, tools, lines, fittings, and hardware are included only when expressly stated for this exact configuration.

About AST Suspension

AST Suspension develops performance springs, dampers, coilovers, top mounts, and motorsport suspension components. Vehicle fitment, dimensions, rates, adjustment functions, and included components remain exact-part specific.

Related Parts

• Shop the complete AST Suspension collection
• Shop suspension components
• AST 2004-05/2011 Chrysler 300C Lowering Springs – 30mm
• AST 2004-05/2011 Chrysler 300C Lowering Springs – 30mm
• AST 2004-11/2012 Chrysler 300C Lowering Springs – 30mm/30mm

Frequently Asked Questions

How do I confirm these springs fit my vehicle?
Match the exact year, make, model, chassis, drivetrain, body style, engine, factory suspension, axle-load notes, and AST part number.

Will I need an alignment after installing lowering springs?
Yes. Measure ride height after the springs settle, then perform a complete alignment and verify tire, wheel, brake-line, and suspension clearance.

Can these springs be used with factory dampers?
Only when the exact AST application permits it. Check damper condition, available travel, bump-stop requirements, and every product-specific suspension note.

Is the advertised drop exact on every vehicle?
The stated drop is a target for the listed configuration. Actual ride height can vary with equipment, vehicle weight, spring isolators, damper condition, and prior suspension changes.

Installation Instructions

1. Confirm the exact AST part number, complete application or dimensional specification, included components, and current instructions before disassembly.
2. Support the vehicle at approved points and record the original ride height, alignment, suspension orientation, and adjustment settings.
3. Install components in the specified position and sequence using correct spring-compression, torque, preload, ride-height, and damper setup procedures.
4. Verify full suspension and steering travel, tire and wheel clearance, brake-line routing, fastener torque, and damper operation.
5. Settle the suspension, measure final ride height, complete a professional alignment, and recheck the installation after the initial driving cycles.