The RUDDOG crawler brush motors in size 540 were conceived for all crawler fans. They come in the popular 5-slot and 3-slot variants and six different wraps. The double ball bearing motors feature specially coated motorheads, replaceable brush brushes, and springs, and brush cooling vanes and are fully rebuildable should the need arise throughout service. The adjustable timing also allows it to be used in the opposite direction to the motor's specified direction of rotation, which can be advantageous for use in vehicles with special gear arrangements. The motors come as a 5-slot variant for a particularly soft power use and a 3-slot variant for higher performance.

Winding: 35T
Stator: 3 slot
Voltage range: 2-3S LiPo / 6-9 cells NiMH
Dimensions: 35.75x53mm (+4mm length with front ball bearing)
Speed: 12,800rpm @7.4V
Weight: 165g