Dodge Mopar 2015-2023 HEMI Complete GForce Performance 9" Rear End IRS Kit Hellcat, Scat Pack & SRT

The bolt-in 9” kit eliminates the flex, noise, “clunking” and weak points of the OEM rear. Plus, you have the confidence knowing you are putting your power through a race-proven bulletproof rear end, but you get all the benefits and advantages an IRS can provide. In addition, the GForce 9” kit comes standard with 35 spline inner stubs. In fact it is the only 9” IRS on the market with the beefy 35-Spline inner axle stubs.

The GForce 9” has been proven to support 2000+ in “real-world” applications. The GForce 9” kit holds IRS records in the 1/4 mile, standing mile and 2-mile in wheel standing IRS vehicles. It’s safe the say the misconception that you cannot put power through an IRS and make it live has been officially debunked.

All GForce Engineering 9” housings are laser cut, bent on a CNC press brake and tig welded for flawless finish and unmatched strength. 9” kits can be purchased as a complete kit with pumpkin and driveshaft. Our preferred provider is Strange Engineering. GForce can also make you driveshafts specifically designed to work with the 9” replacement rear and most common transmission options.

More about GForce Engineering Renegade Axles
The all new GForce Engineering Renegade Axles are a direct replacement for factory half-shafts and are designed for cars with everything from mild bolt-ons to those running superchargers and turbos. The Renegade axles are leap above entry level axles. Machined from proprietary aerospace billet alloy, the Renegade axles feature an upgraded 31-spline axle bar and 31-spline billet machined CV joints. The additional splines offer more spline engagement and allow for larger diameter axle bars equaling unparalleled strength.

In addition to more spline engagement the billet machined 31-spline CV’s provide more travel and increased operating angle than OEM CV joints. They also provide a significant increase in wear characteristics and durability over standard 108mm CV’s commonly found in axle upgrades. Renegade axles also include 1-piece CNC machined billet steel inner and outer stubs. Machined from a single piece of billet steel, GForce inner and outer 1-piece stubs are the strongest stub design period.

GForce 9” Kits Include the following:
Fabricated 9” housing (bolts to factory locations)
Heavy-duty front mount
Solid aluminum or poly bushings
35 Spline Inner and Outer Stubs
Renegade 9” axles
All necessary hardware
Third member to housing
Housing and front mount to cradle
HD aluminum Strange third member
4” aluminum driveshaft (New 4.0" aluminum driveshafts use upgraded tubing, billet Sonnax slip joints, and billet Sonnax direct bolt flanges)

Note: If you are interested in 31 spline diffs, the GForce 9” can be ordered with 31-spline inner stubs. Please call for more information on this application.

Rear Cradle Modifications:
All labor for modifications (welding, bushing removal, paint, etc.)
New 2-stage, poly cradle bushings (installed)
Billet aluminum differential bushings (installed)

*GForce 9” Kits are designed to fit in the factory location and work with factory components with as little modification as possible. When installing a GForce 9” kit, it is up to the installer to check for clearance around all components, including potential clearance issues from drivetrain and suspension movement. Modification might be necessary for driveshaft clearance, especially with exhaust. 9” kits are not guaranteed to fit with ANY other aftermarket products.

Damage Prevention
NO DRIVELINE COMPONENT IS BOMBPROOF! GForce does not put a power rating on any driveline components as there are entirely too many variables that can affect a driveline component other than just horsepower. We take great pride in building the strongest driveline components to fit certain applications, but it is important to know that YOU, the end customer, are responsible for proper installation and YOU, as the driver, are responsible for the lifespan of your axles or other driveline components.Most of the applications we are working with are heavy vehicles and we are often asking a lot of the driveline components, be it OEM or aftermarket. These heavier cars, paired with high torque levels make all driveline components more susceptible to failure due to small mistakes, such as wheel hop. Many customers understand that wheel hop, tire shake, tire skipping, tire chatter are all bad things but there is often a misunderstanding of how destructive it can really be. The heavier the vehicle and more torque the vehicle is making, the more your window of forgiveness begins to narrow. This can result in CV’s loosening prematurely and more severely, splined stubs and axle bars twisting or shearing, which is NOT a fault of the axle. So please use your best judgement when driving in any given scenario, be it on the track or the street.

It is worth noting that most wheel hop related issues rarely cause an immediate failure, with certain exceptions. The result of repeated cycling torque spikes will often weaken the material of a given component such as an axle bar or stub shaft. Then each subsequent hit will continue to weaken the component until it fails completely. If you know that you have driven through a particularly abusing situation, it would be wise to pull the axles and assess the splines of the inner and outer stub shafts as a maintenance procedure. If they have started to twist or shift, then you might be able to prevent a more catastrophic failure. We encourage all end users to read up on the appropriate measures that they can take to help prevent wheel hop with their specific vehicle. This can be anything such as aftermarket bushings, shocks, springs, control arms, tire type, or excessively low tire pressure. Two of the most fundamental pieces we look at to help control rear end movement and prevent wheel hop start with the cradle and differential bushings. Both of these bushing sets are often very soft from the factory and although they provide smooth ride quality, they allow a considerable amount of movement in a performance scenario. Which can lead to a number of concerns or issues.

If you have any further questions please email us at [email protected]

Lowered Vehicle Information
GForce axle shafts were manufactured based on OEM suspension. Aftermarket shocks, control arms, etc. may present clearance issues. If CV boots have clearance issues, low profile boots can be purchased at an upgraded cost. The low profile boots reduce the amount of available axle angle in comparison to the standard boots, so they are not ideal for lowered or high axle angle vehicles. If you have questions or would like to add low profile boots to your axles, please contact us for more information.

Maintenance Information 
All driveline components will fatigue or wear over time depending on how the vehicle is driven and what level of performance is demanded from them. CV joints are a wear item and will see wear over time, but with our current design, axles can be sent in for service. So boots, fasteners, and CV assemblies can be serviced without scrapping the complete axle assembly. It is up to each customer to establish their own maintenance intervals based upon the manner in which their car is driven. Individual inner or outer splined stubs and axle bars can be replaced as well if they twist or are damaged due to wheel hop or simply from power levels exceeding capability of the material.

TREperformance is an Authorized Priority Dealer of GForce Performance Engineering.