Spool HELIX Overdrive billet Aluminum vac cover mounting plates BMW N54/N55
 
The Aircraft grade Aluminum Billet plates are manufactured as an insurance policy against the stock cast OEM plates from developing hairline cracks while subjected to increased stresses from the HELIX unit.
 
Only a small fraction of the cars have inferior castings but it is recommended to use the billet plate while using the Helix.  
 
Please note that all new Helix orders include this mounting plate in the kit, so no separate purchase is necessary. This listing is for customers that previously ordered the Helix and did not receive this mounting plate. Please include the order number/name of the original HELIX order in the order notes and we will refund the cost of the billet plate.
BMW 1-Serie E81/E82/E87/E88 135i
BMW 1-Serie E81/E82/E87/E88 1M Coupe
BMW 3-Serie E90/E91/E92/E93 335i
BMW X1 E84 35i
BMW Z4 E89 35i