DEFIV FABRICATION - LOCKDOWN KITS - Back In Stock!

DEFIV Fabrication is happy to announce that 335i, 335is, 135i and 1M lockdown kits are back in stock! Just in time for your track, road-abused or single turbo build.

100% American Designed and made. Proven to not only eliminate wheel-hop but to also improve shift-feel and load characteristics. The DEFIV Fabrication Differential Lockdown addresses off-the-line concerns and provides peace of mind for your expensive driveline components.

Limited time re-stocking discount: We are able to offer 10% off the first 5 orders placed by members. Email, Call or PM and mention the forum for your discount!

These kits are packaged and ready to ship.