We are proud to introduce our new line of ZZPerformance 4340 axles. Built Stronger. Balanced Smoother. Engineered Smarter.

ZZPerformance axles are designed from the ground up to outperform both OEM and aftermarket alternatives. Every detail, from material selection to surface finish is engineered for precision, strength, and long-term reliability. 

Key features & advantages:

• 4340 Chromoly Center Shaft: Significantly stronger than standard carbon steel, 4340 chromoly delivers exceptional torsional strength and fatigue resistance under high load and high horsepower applications.

• TPE (Thermoplastic Elastomer) CV Boots: Built to last: TPE boots resist tearing, cracking, and chemical degradation far better than standard rubber. They maintain flexibility across a wide temperature range and shrug off oils and road contaminants.

• Precision-Cut Splines: Unlike rolled splines, CNC-cut splines guarantee a perfect engagement fit for maximum torque transfer and minimal driveline slop. 

• Powder-Coated Ends: Adds corrosion protection and a clean, uniform appearance while reducing rust buildup from road debris and salt. 

• Surface Ground Finish: Every axle is surface ground for a mirror-smooth finish. This ensures and ideal seal against the drive housing, reducing wear and potential for leaks over time. 

• ZZPerformance 2-Year Warranty: Confidence backed by experience; all ZZP 4340 axles are covered under our 2-year limited warranty. 

Our LSJ 4340 axles feature a 28mm center shaft. 

Fits: 2005-2007 Chevrolet Cobalt SS 2.0L and 2004-2007 Saturn Ion Redline 2.0L

SOLD AS A PAIR