BMW M50 Billet Aluminum AN Fuel Rail
If you have a track car or running E85 in your M5x BMW engine, this billet aluminum AN fuel rail by Rally Road is a must have. 
This fuel rail is machined for -8 AN ORB o-ring fittings on feed and return sides but will accommodate larger or smaller feed and returns with your choice of supplied adapters.  You may choose a -10 AN feed fitting and a -6 AN return...or whatever combination you like.
Billet mounts and stainless steel hardware included.  Fits OEM body injectors.  Some small body injectors like the ID1000 may require a spacer on the bottom of the injector.
Spacers serve 3 purposes.
1. Spacers will keep the injector stable in the rail.
2. Limit the injector from seating too deep in the OEM intake manifold which will create a boost leak.
3. Keep the injector seated in the rail and eliminate the chance of a dangerous fuel leak.
*Note: Fuel rails are only available in BLACK anodized.  Available with -6 -8 or -10 straight male adapter fittings.
**Note: fits M50 manifold only (Will not fit OBD2 manifold)