Cognito Leaf Spring Mini Kit

 

Cognito Leaf Spring Mini Kit substitutes for the harsh bottom overload leaf with a progressive mini pack that improves rear suspension movement and adds useful height adjustment. Heavy-duty factory spring packs often transition abruptly when the thick overload leaf comes into play, creating a sharp response during unloaded and lightly loaded driving. The mini pack spreads that transition across multiple leaves so the rear axle can move into added spring support more gradually.

A progressive overload is especially helpful over broken pavement, expansion joints, driveway transitions, rough jobsite access roads, and low-speed bumps. Instead of a distinct two-stage feeling, the rear suspension gains a smoother increase in spring rate as travel is used. Customers keep the capability of a truck-oriented leaf layout while making the everyday ride feel less abrupt and easier to control.

Removable spacers add a second benefit by allowing rear ride height to be adjusted for the selected application. Ford heavy-duty versions provide 7/8 inch to 2 inches of rear lift in 3/8 inch increments, while compatible Ram versions provide 1/2 inch to 1-1/4 inches depending on spacer use. Those ranges help installers balance rear stance after a front lift, restore preferred rake, or fine-tune a truck that carries permanent accessories.

The mini packs attach to the stock spring assemblies with new center pins, so the original main leaf packs must remain compatible and serviceable. This is not a substitute for cracked, heavily corroded, or badly sagged springs. When the stock packs are in good condition, the targeted design changes overload behavior and rear height without requiring a complete replacement spring system.

The kit is made in the USA and works well for daily-driven heavy-duty pickups, work trucks, tow vehicles, and lifted builds that spend substantial time empty or lightly loaded. Customers can improve ride progression while preserving a familiar rear suspension layout and application-specific load path. The result is a practical upgrade that combines stance correction with a ride-quality benefit that can be felt during ordinary driving.

Spacer selection, spring compatibility, axle layout, driveline angles, and intended load use should be verified before installation. Final ride height should be measured after the vehicle is returned to the ground and the suspension has settled. Whether customers are upgrading for a smoother overload transition, adjustable rear stance, or better balance behind a front suspension lift, Cognito Leaf Spring Mini Kit delivers a progressive and tunable rear suspension solution. Now Available at LEER!

 

---

 

Features & Specifications

Product Type: Rear progressive mini leaf pack kit

Brand: Cognito

Spring Design: Progressive replacement for the OEM bottom overload leaf

Compatibility: Designed for use with compatible stock rear spring packs

Ford Rear Lift Range: 7/8 inch to 2 inches in 3/8 inch increments on compatible applications

Ram Rear Lift Range: 1/2 inch to 1-1/4 inches based on spacer selection on compatible applications

Vehicle Fitment: Select heavy-duty Ford and Ram trucks

Attachment: New center pins secure the mini packs to the stock spring assemblies

Origin: Made in the USA

Functionality:

• Substitutes for the thick factory bottom overload leaf with a progressive multi-leaf pack
• Converts the rear suspension from an abrupt two-stage response to a smoother spring-rate transition
• Improves unloaded and lightly loaded ride quality on compatible heavy-duty trucks
• Provides application-specific rear height adjustment through removable spacers
• Helps balance rear stance after front leveling or lift changes
• Retains the stock main spring packs for a focused rear suspension update
• Uses new center pins to integrate the mini pack with the existing leaf assembly
• Supports daily driving, work use, towing setups, and lifted builds when properly matched

 

---

 

Available Options

The Cognito Leaf Spring Mini Kit is offered with application-specific lift ranges and spacer arrangements:

• Ford heavy-duty version -- provides 7/8 inch to 2 inches of rear lift in 3/8 inch increments and is suited to customers who need a wider adjustment range for a compatible Ford spring pack.
• Ram heavy-duty version -- provides 1/2 inch to 1-1/4 inches of rear lift based on spacer use and is tuned around the compatible Ram rear spring layout.

Choose the Ford heavy-duty version for the confirmed 7/8 inch to 2 inch adjustment range, or choose the Ram heavy-duty version for the confirmed 1/2 inch to 1-1/4 inch range and matching spring architecture.

 

---

 

Why Choose

This product is ideal for customers who want better rear ride progression, adjustable lift height, and a targeted upgrade that works with compatible stock spring packs.

• Progressive overload action helps remove the sharp transition created by the original bottom leaf
• Multiple spacer positions let installers tune rear height for stance, rake, and accessory weight
• Application-specific lift ranges avoid treating different heavy-duty platforms as though they use the same geometry
• Stock spring-pack compatibility keeps the modification focused and serviceable
• New center pins provide the correct attachment point for the added mini leaves
• Made in the USA construction supports a purpose-built suspension upgrade
• A useful choice for trucks that need both improved unloaded comfort and modest rear lift
• The combined ride and stance benefits can reduce the need for unrelated rear suspension add-ons

 

---

 

What's Included

• Left and right Cognito progressive mini leaf packs
• Removable spacer blocks for application-specific rear height adjustment
• New center pins for attachment to the stock spring packs

Note: Confirm included components before installation.

 

---

 

Installation Notes

• Confirm the correct Ford or Ram application, stock spring-pack compatibility, drivetrain, axle, and desired rear lift range before installation.
• Choose the spacer arrangement carefully and verify final ride height, rake, and side-to-side measurement after normal settling.
• Use professional spring-pack service procedures and inspect original leaves, U-bolts, bushings, shackles, shocks, and brake-line clearance.
• Recheck center-pin security, U-bolt torque, driveline angles, and suspension clearance after the initial break-in period.

Buyer is responsible for use in accordance with applicable vehicle, road, off-road, towing, racing, and local laws.

 

---

 

Warranty Information

Cognito suspension and steering components are covered by a limited lifetime warranty for the original retail purchaser against defects in workmanship and materials for as long as that purchaser owns the vehicle on which the product was originally installed. Coverage applies within the terms of the warranty and does not transfer automatically to a later owner or a different vehicle.

Warranty coverage can be affected by improper installation, component modification, altered surface finishes, misuse, impact damage, corrosion from neglected maintenance, or use outside the intended application. Proof of purchase may be required, and warranty review does not replace the need to confirm fitment, complete routine inspections, and operate the vehicle within the product's stated limits.