Tired of experiencing wheel hop with a “loose” and unsure feeling in the rear end of your 135i or 335i? Then it’s time to fix everything to smooth out your launch and reassure yourself when smashing down on that go pedal with one of these CPF Differential Lockdown Brackets! Installation takes a total of 10 minutes and you will see an instant improvement in launching and drivability. The 135i’s and 335i’s are notorious for a sloppy rear end from the factory. The cause comes from the soft rubber differential carrier and subframe bushings allowing the differential to flex vertically putting all the excess torque into the rubber instead of the road. This bracket prevents the vertical movement of the differential without changing drivability or adding any NVH.
The bracket is made out of 1/4” American made steel and powdercoated semigloss black for an OEM finish. Custom requested powdercoat colors can be done for an extra $10. Please add the requested color into the notes at checkout. Custom color brackets are made to order and will ship and 1-2 weeks due to powdercoating time.
The supplied grade 8 bolts are used to replace the two lower stock differential bolts and have a serrated head flange to prevent them from backing out ever and are 5mm longer than stock to compensate for the width of the bracket. The OEM hardware will be reused on the subframe side to prevent losing it so that if the bracket is ever removed the OEM hardware is available and can easily be reinstalled. There are installation and explanation videos on the link below.
There are two different size differential’s used on these cars. Please review the sizing chart made by VAC Motorsports in the product images and order either a small or large bracket based on your differential size. You can also add your model, year, and transmission of your vehicle during checkout for added reassurance. The majority of 2007 model year (2006 production year) 335i’s did not come with holes in the subframe for mounting the bracket. Please purchase at your own discretion and watch the installation video prior to purchasing in order to understand what is required to drill the mounting holes into the subframe in the OEM location.
Installation Video Link 👇
All products produced and sold by Clark Performance Fabrication, LLC are intended for off road use only. The use of any of these products are at the user’s own risk.