Carli CS-FMRC-05 Progressive 4.5"-5.5"Lift Coil Springs for 05-26 Ford F250/F350

Vehicle Fitment

• 2005-2019 Ford F-250 4WD Diesel (approx. 4.5" front lift)
• 2005-2019 Ford F-350 4WD Diesel (approx. 4.5" front lift)
• 2020-2026 Ford F-250 4WD Diesel (approx. 5.5" front lift)
• 2020-2026 Ford F-350 4WD Diesel (approx. 5.5" front lift)

Features

• Progressive rate front coil springs engineered for lift applications
• Provides approximately 4.5" of lift on 2005-2019 models
• Provides approximately 5.5" of lift on 2020+ models
• Side-specific spring design for balanced suspension response
• Multi-rate behavior for comfort and control throughout travel
• Shot-peened and pre-set for long-term spring life and consistency
• Durable powder coat finish for corrosion resistance and longevity
• Helps maintain ride quality while increasing articulation travel

Specifications

• Part Number: CS-FMRC-05
• Spring Type: Progressive coil springs
• Fitment: Ford F-250 & F-350 4WD diesel models (2005-2026)
• Lift Height: ~4.5" (2005-2019) / ~5.5" (2020-2026)
• Material: High-strength alloy steel
• Finish: Black powder coat
• Design: Side-specific (driver and passenger orientation)
• Application: Front suspension lift for heavy-duty trucks

Included Components

• 2x Front progressive rate coil springs (left & right)

Product Description

The Carli CS-FMRC-05 Progressive Lift Coil Springs are engineered as a heavy-duty front suspension lift solution for Ford Super Duty 4WD diesel trucks from 2005 through 2026. These coil springs deliver substantial lift - approximately 4.5" on 2005-2019 models and approximately 5.5" on 2020+ models - while providing a progressive spring rate that balances ride comfort with added suspension control. The progressive design ensures a more comfortable ride through the travel range, with a secondary increased rate to help prevent premature bump stop engagement under heavier loads or more aggressive wheel travel.

Constructed from high-strength alloy steel and finished in a durable black powder coat, the CS-FMRC-05 springs are side-specific and pre-set to resist sagging over time. Shot-peened for improved tensile properties, these springs help increase usable wheel travel while maintaining control and stability in lifted applications. Ideal for lifted 4WD Super Duty diesel builds, these springs are commonly paired with Carli shock packages, extended brake lines, track bars, and other suspension components in comprehensive lift systems to improve articulation and overall ride quality.