blf a6 aftermarket parts??

It isn't the A6 that makes the magic. It is the driver and emitter. If you are needing small....Get yourself an X6 and install this driver. If it must be a tube then get an S2 with an SMO reflector from Mountain or Simon. As a matter of fact...Mountain (RMM) will have whatever you need to fit the bill.

BTW...If you like the A6 then you need to be signed up for the X6v2/X5 sets (as stated above)