TeraFlex 1404000 4-Inch Coil Spring Base Lift Kit JK 4-Door

The TeraFlex 1404000 is a 4-inch coil spring base lift kit designed specifically for Jeep Wrangler JK Unlimited 4-door models (2007-2018). This comprehensive spring box kit provides the essential components needed to lift your JK and achieve improved ground clearance for serious off-road capability.

Key Features:

• 4-inch lift height allows up to 37-inch tire clearance
• Includes front and rear coil springs engineered for optimal performance
• Features front sway bar disconnects for improved articulation
• Rear sway bar links and rear track bar bracket included
• Bump stops and all necessary mounting hardware provided
• Properly engineered suspension geometry maintains factory stability controls

Installation Notes:

• Requires aftermarket wheels with 4.5-inch backspacing or less, or TeraFlex offset wheel adapters for stock wheels
• Shocks not included - TeraFlex 9550 VSS or Falcon Performance shocks recommended
• Driveshaft modifications highly recommended for 4-door models
• Adjustable control arms and track bars recommended to optimize suspension geometry
• Professional installation recommended - approximately 8 hours installation time

This is a base lift kit component designed to work with TeraFlex master suspension system kits. Every TeraFlex suspension system is engineered with drivability and performance in mind, ensuring proper roll center and load tuning for confident on-road handling and extreme off-road capability.