Cognito Leaf Spring Mini Kit
FROM: $599.95 USD
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Product Overview
The Cognito Leaf Spring Mini Kit is designed for Ram and Ford heavy-duty truck owners who want better rear ride quality and added rear height without replacing the full factory leaf spring pack. This mini pack replaces the OEM bottom overload leaf, helping reduce the harsh feel commonly associated with factory overload springs.
Built for compatible Ram 2500/3500 and Ford F-250/F-350 4WD applications, this kit converts the factory 2-stage leaf pack into a progressive leaf pack. The result is a smoother, more controlled rear suspension feel with adjustable lift height depending on the number of removable spacers used. Cognito lists the Ram version for 2003–2013 Ram 2500 and 2003–2025 Ram 3500, while the Ford page title lists 2008–2025 F-250/F-350 4WD fitment.
The Ram application provides 1/2 inch to 1-1/4 inches of rear lift in 3/8-inch increments, while the Ford application provides 7/8 inch to 2 inches of rear lift in 3/8-inch increments. Both versions use removable spacers to fine-tune the final rear height.
Additional features include included center pins, compatibility with stock spring packs, and a progressive overload design for improved comfort compared to the OEM bottom overload leaf. Longer U-bolts may be required and are not included.
Engineered with vehicle-specific fitment, the Cognito Leaf Spring Mini Kit provides a clean rear suspension upgrade that maintains the factory spring pack layout while improving ride feel and stance.
Installation is typically a rear leaf spring modification that removes the factory bottom overload leaf and installs the mini pack to the stock spring pack using the included center pins. Because U-bolt length can vary by application and spacer setup, longer U-bolts may be required.
Whether you're upgrading for improved ride comfort, added rear stance, or a more progressive rear suspension feel, the Cognito Leaf Spring Mini Kit delivers an effective solution for compatible Ram and Ford HD trucks. Now Available at LEER!
Features & Specifications
Product Type: Rear Leaf Spring Mini Pack Kit
Brand: Cognito
Material: Spring steel
Finish Options: Not specified
Mounting Type: Fastens to compatible stock rear leaf spring packs
Fitment:
- Select Ram 2500/3500
- Select Ford F-250/F-350 4WD
Design: Progressive overload mini pack
Key Dimensions: Application-specific
Functionality:
- Improved rear ride quality
- OEM bottom overload leaf replacement
- Progressive leaf pack conversion
- Adjustable rear lift height
- Rear suspension stance tuning
Available Options
The Cognito Leaf Spring Mini Kit is available in:
Vehicle Fitments
- 2003–2013 Ram 2500
- 2003–2025 Ram 3500
- 2008–2025 Ford F-250 4WD
- 2008–2025 Ford F-350 4WD
Finish Options
- Not specified
Configurations
- Fits 2003–2013 Ram 2500 and 2003–2025 Ram 3500
Provides 1/2 inch to 1-1/4 inches of rear lift
Adjustable in 3/8-inch increments with removable spacers
Replaces the OEM bottom overload leaf
Longer U-bolts may be required and are not included - Fits 2008–2025 Ford F-250/F-350 4WD
Provides 7/8 inch to 2 inches of rear lift
Adjustable in 3/8-inch increments with removable spacers
Replaces the OEM bottom overload leaf
Longer U-bolts may be required and are not included
Choose the correct Cognito Leaf Spring Mini Kit based on your truck’s year, make, model, drivetrain, and desired rear lift height.
Why Choose the Cognito Leaf Spring Mini Kit?
This product is ideal for customers who want improved ride quality and adjustable rear lift without replacing the entire factory spring pack.
- Improves rear ride comfort by replacing the harsh OEM bottom overload leaf
- Adds adjustable rear height using removable spacer blocks
- Converts the factory 2-stage leaf pack into a progressive spring setup
- Works with stock spring packs for a clean suspension upgrade
- Includes center pins for proper mini pack attachment
What’s Included
- Cognito leaf spring mini pack set
- Removable spacer blocks
- New center pins
- Installation instructions
Installation Notes
- Designed to replace the factory bottom overload leaf
- Compatible only with stock spring packs
- Fastens to the OEM spring pack using included center pins
- Rear lift height depends on how many spacer blocks are used
- Longer U-bolts may be required and are not included
- Professional installation is recommended if you are unfamiliar with rear suspension work
Compatibility Notes
These mini packs are only compatible with stock spring packs. They are designed for improved ride quality and adjustable rear lift, not as a primary payload or towing-capacity upgrade. Longer U-bolts may be required depending on the final configuration.
Warranty Information
Cognito Warranty
Cognito products are backed by a limited lifetime warranty, covering defects in materials and workmanship.