BMW Upgraded axles 135i 335i M3

E82/E92 Axle & Stub Upgrade

Ford 8.8 swap axles are specificaly designed to be used with our bracket kit. Using axles in another kit voids warranty as they may be out of proper operating rage (plunge depth measurement). Our kit is by far the best engineered on the market and is designed by OEM driveline engineers.


We have axles ready to go for Ford 8.8 swapped vehicles. If you would like upgraded axles for use with a factory M3 differential, please reach out to us and we can give you a discount to measure axle lengths for us using our custom billet outer stubs.



  • BMW Differential Option: Billet outer stubs with matching axles and diff adapters
  • Ford 8.8 Option: Billet outer stubs and billet 31 spline inner 8.8 stubs
  • Lifetime Warranty
  • New axle seals and adapters (For Ford kits)

The all new SLG/G-Force axle kit is a cut above anything else on the market. The kits are a direct replacement for factory half-shafts or optioned to be matched for a 31-spline Ford 8.8 differential. They are designed for cars with everything from mild “bolt-ons” ripped on the street to those running big single turbos down clutch kicking around a banked oval.


The axles feature an upgraded 31-spline axle bar and 31-spline billet 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 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 competitors axle upgrades.

The real key to the puzzle is the outer stub. They are machined from a single piece of billet steel, then heat treated, and finally e-coated for rust protection. Our stubs are definitely the strongest around! Our competitors re-use the factory outer CV, but we build from scratch for the ultimate solution that gets rid of the weakest link in the factory and our competitors axles- the outer CV joint.

In addition to increased strength, the axles feature anti-wheel hop technology. Originally brought to market by GM several years ago, our axles feature this same technology and offer a significant reduction in hop during hard launches. This helps your drivetrain last. 

The axles are hand built in the USA . We carefully control each process to assure the highest quality, hand-build each axle assembly and only use premium materials. Because of these measures, we trust these axles for life and offer a lifetime warranty. Follow the video link to watch how to install the seals and stubs into your 8.8 Video Link


Note: Depending on your ride height and/or if have an aftermarket or M3 rear sway bar, you may need adjustable sway bar links such as these to clear the larger and much stronger CV's that we use: Link Or, you can drill a second hole in the sway bar to raise it to clear the larger axle CV. this also is a cheap and easy mod that effectively stiffens the sway bar slightly, which is good thing for handling. All for 0$! This is also the best way to clear small drag racing wheels.



  • Billet Stubs
  • Anti-Wheel Hop Technology
  • Direct Bolt-In Fit and Finish
  • 31 Spline Severe-Duty CV’s
  • 1-Piece Inner and Outer Stubs
  • Aircraft Grade Certified Alloys
  • CNC-Machined
  • Powder Coated Axles For Corrosion Protection
  • Black e-coat finish

Looking for something more? Take a look at our Outlaw upgrade: Featuring an upgraded CV and components, the Outlaw CV maintains a 108mm design but features an upgraded alloy on the billet machined internals. Each CV also receive an isotropic surface finish for a mirror like polish. The surface finishing provides smoother operation for the CV joint which dramatically reduces heat, premature wear and aides in grease migration. In addition, each Outlaw axle uses premium ARP fasteners for the industry’s strongest CV axle bolts.

Limited Lifetime Warranty
SLG backs all axles with a limited lifetime warranty. Warranty is limited to stubs and axle bars only. CV’s and CV boots are considered a wear-item and carry a limited 1-year warranty. Warranty is transferable, but restrictions for transfer of ownership do apply. For more details on the warranty, visit us here:

  • Terms and Conditions

    Due to the intended use of high performance products, Seems Legit Garage, LLC. ("SLG”) products and each part thereof, are sold "AS IS” and with all faults. To the fullest extent allowed by law, SLG Racing Products makes NO written, oral, expressed, or implied statement of warranty or guarantee on any product or part sold. SLG will not be liable for any direct, indirect, incidental, consequential, or special damages, including but not limited to, damage, injury, loss of life, loss of property or equipment, loss of profits or revenue, or claims from any individual or entity arising from the use of any SLG product. 

    RACING IS A DANGEROUS ACTIVITY AND PURCHASERS OF SLG PRODUCTS ACKNOWLEDGE THE INHERENT RISKS ASSOCIATED. SLG MAKES NO REPRESENTATIONS THAT ITS PRODUCTS CAN REDUCE OR ELIMINATE ANY SUCH RISK. SLG products are NOT FOR STREET, HIGHWAY, OR AIRCRAFT USE and are intended ONLY for race vehicles operated on closed-course facilities or race tracks with appropriate supervision of qualified technicians or mechanics to ensure that the safety needs of the race driver and others are met. SLG products could be combined with other products or parts which may not be suitable and could adversely affect performance of other race parts or the vehicle. The user shall determine the ultimate suitability and safety of the product for its intended use, and the user assumes all responsibility and risk in connection therewith. 

"Outlaw" Axle Upgrade