BMW N47/N57/ B57 CP4 Stroker Shaft Installation Upgrade Stock pump to 700HP

This service is to upgrade your stock BMW CP4.1 or 4.2 utilizing a new 10mm stroker shaft.  This will enable your stock pump to supply enough fuel to make 700HP on a the 3.0L I6 N57/B57

All O-rings and seals will be replaced when installing the new shaft.  The shaft, seals, and labor is included. 

You must ship your mechanically sound CP4 to us.  From there we will disassemble your CP4 and inspect it to verify that it is in good condition. If everything checks out we will replace your stock shaft with the stroker shaft, replace all orings and seals, reassemble and ship back to you.