IRS Kit with Renegade Axles

The GForce Performance CTS10901A is a complete, bolt-in independent rear suspension (IRS) system engineered to replace the stock driveline of the Gen 2 Cadillac CTS-V. This fully-fabricated 9” IRS kit addresses the known weak points of the OEM driveline, which can struggle with increased power levels and abuse. By replacing the stock differential and associated components, the GForce 9” kit aims to eliminate flex, noise, and potential failure points, offering enhanced reliability and performance. The kit features a fabricated 9” housing that mounts to the factory differential points. It includes GForce's durable Renegade axles, which come standard with 35-spline inner stubs—claimed to be the only 9” IRS on the market with this feature. Options for gear ratios, differential types, axle upgrades (like Outlaw Axles), and driveshaft configurations (including a 4” carbon fiber option) allow for customization to specific performance needs. Installation may require modifications, particularly around the passenger side factory 2-piece driveshaft carrier bearing mount, which might need to be massaged, cut, or removed to accommodate driveshaft movement. Similarly, clearance around exhaust systems and other aftermarket suspension components should be checked by the installer, as the 9” kit is not guaranteed to fit with all other aftermarket products. Upgraded bushings for the rear differential mount, cradle, and transmission mounts are strongly advised for optimal functionality and to help prevent wheel hop and control pinion rise. Dedicated race cars may require additional considerations for gear and bushing choices. It is critical to understand that no driveline component is indestructible. GForce Engineering emphasizes that the end customer is responsible for proper installation and the driver is responsible for the lifespan of the components. Factors such as wheel hop, tire shake, and excessive torque can lead to premature wear or failure of splined stubs and axle bars, which is not considered a fault of the component itself. Regular inspection of splines for twisting or shifting is recommended, especially after abusive driving situations.