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Vorshlag BMW Z4 T56 Magnum Transmission Crossmember Kit

Please Note: These LS1 swap parts are made in batches, and can sometimes take weeks to fulfill orders. We prefer to take these orders over the phone, so we can then only charge you for parts as they ship. If you order here, online, your credit card is charged immediately. If you have any questions about ETAs on any parts please call us at 972-422-7170.

This cart entry is for the complete transmission crossmember assembly built by Vorshlag Motorsports for use with the BMW Z4 chassis for use with our LS swap kit. This can be used with one transmission only: a T56 Magnum XL 6-spd transmission. This crossmember is made to work with any LSx V8 using the Vorshlag E46/Z4 LS swap engine mounts and E46/Z4 long tube headers. 

This entry includes the fabricated transmission crossmember, and an Energy Suspension polyurethane trans mount bushing. This is made using CNC cut plate steel that is fitted together like a jig-saw, then TIG welded on our production fixtures. This is 100% made in-house at Vorshlag.

You can see how tight the pieces fit together, above. Once these are seam welded on our welding fixture, the assembly is powder coated black. We designed this Transmission Crossmember Kit to be used with our E46 / Z4 RHD LS Motor Mount Kit and E46 / Z4 long tube stainless headers - for the proper engine and transmission placement and driveline angles.


  • Transmission crossmember for Tremec T56 Magnum XL to be used in a LHD BMW Z4 chassis
  • Energy Suspension Polyurethane transmission bushing with hardware
  • M10 bolts and washers for mounting transmission to crossmember


Only one 6-speed transmissions is supported in our LS / T56 BMW Z4 swap. Lots of people like to call the various GM 6-speed manual transmissions "T56" and the name "Magnum" is thrown around by transmission rebuilders. A brand new "Tremec T56 Magnum XL" is rated at 700 ft-lbs of torque and has to be custom built to work with the GM pilot bearing.

This T56 Magnum XL is "Extra Long" - longer than a T56 Magnum by almost 6 inches - which lines up perfectly with the "firewall-to-shifter" spacing on the BMW Z4. When designing this swap kit we tested a T56 Magnum (normal length) and 1998-2002 Camaro T56 - they were both much too short to fit this chassis.


This is a brand new, custom built "Tremec T56 Magnum XL" 6-speed Transmission

Once more: Our transmission crossmember fits the mounting holes and shifter location of the Z4 chassis with a custom built T56 Magnum XL made for GM LS use, available for sale in this section - not anything else. Not an automatic, not a 5th gen Camaro TR6060, not a GTO or Cadillac remote shifted box, not some random other transmission