The coupler trip pin is adjusted at the factory for correct center line height

Direct replacement part

Rod ends made of tough

Gun metal gray in color

This is an optional Axial Machined Aluminum Front Shock Tower

Hitec HS-81 Standard Micro Servo 31081S Drill Bits The coupler trip pin isHitec HS 81 Standard Micro Servo Description: You get two choices with Hitecs most popular servo the HS 81, resin or metal gears. A popular servo for smaller airplanes, helis, boats, cars and trucks, the HS 81 offers a fine balance between speed and torque. Specifications: Motor Type: 3 Pole Bearing Type: None Speed (4. 8V 6. 0V): 0. 11 0. 09 sec @ 60 deg. Torque oz. in. (4. 8V 6. 0V): 36 42 Torque kg. cm. (4. 8V 6. 0V): 2. 6 3. 0 Size in Inches: 1.