ive always used mccoys glow plugs, they seem to work great. i belive traxxas also has specific glow plugs for the 2.5r. local hobby shop will have them. just go in and say i need a couple glow plugs for a maxx. or towerhobbies.



http://www2.towerhobbies.com/cgi-bin...&I=LXJL33&P=ML

http://www2.towerhobbies.com/cgi-bin...?&I=LXRA06&P=7