Go here:

[link=http://www2.towerhobbies.com/cgi-bin/wti0001p?&W=000213529&I=LXJB16&P=K]Tower Hobbies Muffler[/link]

and buy it.

This muffler is cheaper and way better than stock. It will transform your 46AX. I use them on a 46AX, 50SX, and two GMS 47 motors. In fact, I replace the stock mufflers before I even start new motors.

Live long, and prosper
Jerry L. Gubka