Rock Krawler JK25SS-4B51 2.5-Inch Starter Suspension Lift System with Bilstein Shocks for Wrangler JK 4-Door

The Rock Krawler JK25SS-4B51 is a 2.5-inch front and rear suspension lift system designed for the 2007–2018 Jeep Wrangler JK 4-Door (JKU). This entry-level Starter System delivers the essential geometry corrections needed when installing taller lift springs, making it an ideal foundation for building out a complete Rock Krawler suspension setup. The kit includes Bilstein performance shocks, providing upgraded damping straight out of the box.

At the heart of the system are Rock Krawler's signature triple-rate coil springs, which deliver excellent on-road ride comfort and sufficient coil length to allow full off-road flex without unseating a spring. Fixed high-clearance front lower control arms correct caster and front axle positioning for proper drivability at lift height. Stainless steel brake line drop brackets are included to support the additional suspension travel front and rear.

Spring bow — an inherent issue in the factory Wrangler JK setup — is corrected with included correction pads for a flat, neutral spring seat. The system is engineered to be upgradeable, serving as the foundation for a more comprehensive Rock Krawler suspension build down the road. A limited lifetime warranty backs the entire system.

Key Features:

• 2.5-inch front and rear suspension lift
• Includes Bilstein performance shocks (front and rear)
• Signature Rock Krawler triple-rate coil springs for superior on- and off-road ride quality
• Fixed high-clearance front lower control arms for caster and axle position correction
• Stainless steel brake line drop brackets included
• Spring bow correction pads for front and rear
• Complete bolt-in installation — no cutting or welding required
• Upgradeable to a full Rock Krawler suspension system
• Limited lifetime warranty

The Rock Krawler JK25SS-4B51 Starter System is the smart first step for JKU owners who want improved off-road geometry, a better trail ride, and the option to expand their build over time — all at a budget-friendly entry price.