2005–2026 Ford F-250/F-350 Carli Suspension 2.5” / 3.5” Linear Rate Front Coil Springs

Upgrade the ride quality and stance of your Ford Super Duty with the Carli Suspension Linear Rate Front Coil Springs. Designed specifically for diesel-powered Ford F-250 and F-350 4x4 trucks, these premium front coils provide improved ride comfort, better suspension performance, and a leveled aggressive stance without sacrificing daily drivability.

Built using a custom linear spring rate, these coils are engineered to deliver smooth suspension movement throughout the entire travel range. Whether you're cruising on the highway, towing, or hitting rough backroads, the Carli springs help reduce harshness over small bumps while maintaining controlled suspension feel under load.

Key Features

Designed for 2005–2026 Ford F-250/F-350 4x4 Diesel Trucks
Provides 2.5” of front lift on 2005–2019 models
Provides 3.5” of front lift on 2020–2026 models
Linear-rate spring design for smooth and predictable ride quality
Slightly softer spring rate than factory coils for improved comfort
Shot peened and pre-set for maximum strength and durability
Durable black powder-coated finish for corrosion resistance
Designed to resist sagging over time
Improves suspension travel and overall ride performance
Direct replacement front coil springs

Vehicle Fitment

Fits:

• 2005–2019 Ford F-250/F-350 4x4 Diesel — 2.5” Front Lift
• 2020–2026 Ford F-250/F-350 4x4 Diesel — 3.5” Front Lift
• Compatible with Tremor models (approximately 1.5” of lift)

Designed for diesel engine trucks only.

Ride Quality & Performance

Carli engineered these coils to address common ride quality issues found in both factory and aftermarket spring setups. The custom linear spring rate provides a controlled and comfortable ride while maintaining stability during towing, hauling, and off-road use.

The softer initial compression helps absorb road imperfections and highway chatter, while the spring maintains consistent support deeper into the suspension travel.

Construction

Each coil spring is manufactured using premium materials and undergoes a shot peening and hydraulic pre-set process to maximize longevity and strength. Finished in a durable black powder coat, these springs are built to handle harsh weather and demanding driving conditions.

Installation Notes

• Direct replacement front coil springs
• Professional installation recommended
• Alignment recommended after installation
• Sold as a pair

What's Included

• (2) Carli Linear Rate Front Coil Springs