Two O-Rings

100-ton Roller Bearing Freight Car Trucks

Features: 540 size can replaces many stock motors

These are Self-Centering Bettendorf Truck with 33" Smooth Back Wheels from Kadee

Hitec HS-85MG Premium Metal Gear Micro Servo Wraith Parts Two O-RingsHitec HS 85MG Premium Metal Gear Micro Servo The HS 85MG features a high power motor for greater speed and torque. The HS 85MG is the choice of modelers looking for a high performance servo without breaking the bank. The ball bearing supported output shaft and sturdy gear trains are preferred for smaller glow and electric airplanes, helis and sail planes. Includes: One Servo with Hardware Specifications: Motor Type: 3 Pole Bearing Type: Top Ball